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Ferreira FV, Souza AG, Ajdary R, de Souza LP, Lopes JH, Correa DS, Siqueira G, Barud HS, Rosa DDS, Mattoso LH, Rojas OJ. Nanocellulose-based porous materials: Regulation and pathway to commercialization in regenerative medicine. Bioact Mater 2023; 29:151-176. [PMID: 37502678 PMCID: PMC10368849 DOI: 10.1016/j.bioactmat.2023.06.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 06/16/2023] [Accepted: 06/24/2023] [Indexed: 07/29/2023] Open
Abstract
We review the recent progress that have led to the development of porous materials based on cellulose nanostructures found in plants and other resources. In light of the properties that emerge from the chemistry, shape and structural control, we discuss some of the most promising uses of a plant-based material, nanocellulose, in regenerative medicine. Following a brief discussion about the fundamental aspects of self-assembly of nanocellulose precursors, we review the key strategies needed for material synthesis and to adjust the architecture of the materials (using three-dimensional printing, freeze-casted porous materials, and electrospinning) according to their uses in tissue engineering, artificial organs, controlled drug delivery and wound healing systems, among others. For this purpose, we map the structure-property-function relationships of nanocellulose-based porous materials and examine the course of actions that are required to translate innovation from the laboratory to industry. Such efforts require attention to regulatory aspects and market pull. Finally, the key challenges and opportunities in this nascent field are critically reviewed.
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Affiliation(s)
- Filipe V. Ferreira
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentation – Rua XV de Novembro, 1452, São Carlos, SP, 13560-979, Brazil
| | - Alana G. Souza
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Santo André, Brazil
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P. O. Box 16300, Aalto, Espoo, FIN-00076, Finland
| | - Lucas P. de Souza
- College of Engineering and Physical Sciences, Aston Institute of Materials Research, Aston University, Birmingham, UK
| | - João H. Lopes
- Department of Chemistry, Division of Fundamental Sciences (IEF), Technological Institute of Aeronautics (ITA), São Jose dos Campos, SP, Brazil
| | - Daniel S. Correa
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentation – Rua XV de Novembro, 1452, São Carlos, SP, 13560-979, Brazil
| | - Gilberto Siqueira
- Laboratory for Cellulose & Wood Materials, Empa - Swiss Federal Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600, Dübendorf, Switzerland
| | - Hernane S. Barud
- Biopolymers and Biomaterials Laboratory (BIOPOLMAT), University of Araraquara (UNIARA), Araraquara, 14801-340, São Paulo, Brazil
| | - Derval dos S. Rosa
- Center for Engineering, Modeling, and Applied Social Sciences (CECS), Federal University of ABC (UFABC), Santo André, Brazil
| | - Luiz H.C. Mattoso
- Nanotechnology National Laboratory for Agriculture (LNNA), Embrapa Instrumentation – Rua XV de Novembro, 1452, São Carlos, SP, 13560-979, Brazil
| | - Orlando J. Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P. O. Box 16300, Aalto, Espoo, FIN-00076, Finland
- Bioproducts Institute, Department of Chemical & Biological Engineering, Department of Chemistry and, Department of Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
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Reyes G, Vega-Coloma M, Antonova A, Ajdary R, Jonveaux S, Flanigan C, Lautenbacher N, Rojas OJ. Direct CO 2 Capture by Alkali-Dissolved Cellulose and Sequestration in Building Materials and Artificial Reef Structures. Adv Mater 2023; 35:e2209327. [PMID: 36516448 DOI: 10.1002/adma.202209327] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Current carbon capture and utilization (CCU) technologies require high energy input and costly catalysts. Here, an effective pathway is offered that addresses climate action by atmospheric CO2 sequestration. Industrially relevant highly reactive alkali cellulose solutions are used as CO2 absorption media. The latter lead to mineralized cellulose materials (MCM) at a tailorable cellulose-to-mineral ratio, forming organic-inorganic viscous systems (viscosity from 102 to 107 mPa s and storage modulus from 10 to 105 Pa). CO2 absorption and conversion into calcium carbonate and associated minerals translate to maximum absorption of 6.5 gCO2 gcellulose -1 , tracking inversely with cellulose loading. Cellulose lean gels are easily converted into dry powders, shown as a functional component of ceramic glazes and cementitious composites. Meanwhile, cellulose-rich gels are moldable and extrudable, yielding stone-like structures tested as artificial substrates for coral reef restoration. Life Cycle Assessment (LCA) suggests new CCU opportunities for building materials, as demonstrated in underwater deployment for coral reef ecosystem restoration.
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Affiliation(s)
- Guillermo Reyes
- Biobased Colloids and Materials, Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Espoo, FI-00076, Finland
| | - Mabel Vega-Coloma
- Departamento de Ingeniería en Maderas, Universidad del Bío-Bío, Av. Collao 1202, Casilla 5-C, Concepción, 4081112, Chile
| | - Anna Antonova
- Department of Civil Engineering, Aalto University, Rakentajanaukio 4 A, Otaniemi, Espoo, 02150, Finland
| | - Rubina Ajdary
- Biobased Colloids and Materials, Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Espoo, FI-00076, Finland
| | - Solène Jonveaux
- Université de Sherbrooke, 2500 Boulevard de l'Université, Sherbrooke, Quebec, J1K 2R1, Canada
| | - Colleen Flanigan
- Zoe - A Living Sea Sculpture in Cozumel, Av. Rafael E. Melgar, San Miguel de Cozumel, Q.R., 77688, Mexico
| | - Nathalie Lautenbacher
- Department of Design, Aalto University, Otaniementie 14, Otaniemi, Espoo, 02150, Finland
| | - Orlando J Rojas
- Biobased Colloids and Materials, Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Espoo, FI-00076, Finland
- Bioproducts Institute, Department of Chemical & Biological Engineering, Department of Chemistry and Department of Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
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Reyes G, Ajdary R, Kankuri E, Kaschuk JJ, Kosonen H, Rojas OJ. Cellulose gelation in NaOH (aq) by CO 2 absorption: Effects of holding time and concentration on biomaterial development. Carbohydr Polym 2023; 302:120355. [PMID: 36604045 DOI: 10.1016/j.carbpol.2022.120355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/11/2022] [Accepted: 11/12/2022] [Indexed: 11/24/2022]
Abstract
We address the limited solubility and early onset of gelation of aqueous sodium hydroxide to position it as a preferred green solvent for cellulose. For this purpose, we expand the concentration window (up to 12 wt%) by using a CO2-depleted air and adjusting the time the dope remains in the given atmosphere, before further processing (holding time) and regeneration conditions. Cellulose solutions are extruded following characteristic (rheology and extrusion) parameters to yield aligned filaments reaching tenacities up to 2.3 cN·dtex-1, similar to that of viscose. Further material demonstrations are achieved by direct ink writing of auxetic biomedical meshes (Poisson's ratio of -0.2, tensile strength of 115 kPa) and transparent films, which achieved a tensile strength and toughness of 47 MPa and 590 kJ·m-3, respectively. The results suggest an excellent outlook for cellulose transformation into bioproducts. Key to this development is the control of the gelation ensuing solution flow and polymer alignment, which depend on CO2 absorption, cellulose concentration, and holding time.
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Affiliation(s)
- Guillermo Reyes
- Biobased Colloids and Materials, Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Espoo, Finland.
| | - Rubina Ajdary
- Biobased Colloids and Materials, Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Espoo, Finland; Bioproducts Institute, Department of Chemical & Biological Engineering, Department of Chemistry and Department of Wood Science, 2360 East Mall, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Esko Kankuri
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, 00290 Helsinki, Finland.
| | - Joice J Kaschuk
- Biobased Colloids and Materials, Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Espoo, Finland; Bioproducts Institute, Department of Chemical & Biological Engineering, Department of Chemistry and Department of Wood Science, 2360 East Mall, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada.
| | - Harri Kosonen
- UPM Pulp Research and Innovations, UPM, Paloasemantie 19, FI-53200 Lappeenranta, Finland.
| | - Orlando J Rojas
- Biobased Colloids and Materials, Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Espoo, Finland; Bioproducts Institute, Department of Chemical & Biological Engineering, Department of Chemistry and Department of Wood Science, 2360 East Mall, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada.
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Baniasadi H, Kimiaei E, Polez RT, Ajdary R, Rojas OJ, Österberg M, Seppälä J. High-resolution 3D printing of xanthan gum/nanocellulose bio-inks. Int J Biol Macromol 2022; 209:2020-2031. [PMID: 35500781 DOI: 10.1016/j.ijbiomac.2022.04.183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 04/05/2022] [Accepted: 04/25/2022] [Indexed: 01/19/2023]
Abstract
The current study provides a comprehensive rheology study and a survey on direct ink writing of xanthan gum/cellulose nanocrystal (XG/CNC) bio-inks for developing 3D geometries that mimic soft tissue engineering scaffolds' physical and mechanical properties. The presence of CNC was found to be a critical prerequisite for the printability of XG bio-inks; accordingly, the hybrid XG/CNC bio-inks revealed the excellent viscoelastic properties that enabled precise control of hydrogel shaping and printing of lattice structures composed of up to eleven layers with high fidelity and fair resolution without any deformation after printing. The lyophilized 3D scaffolds presented a porous structure with open and interconnected pores and a porosity higher than 70%, vital features for tissue engineering scaffolds. Moreover, they showed a relatively high swelling of approximately 11 g/g, facilitating oxygen and nutrient exchange. Furthermore, the elastic and compressive moduli of the scaffolds that enhanced significantly upon increasing CNC content were in the range of a few kPa, similar to soft tissues. Finally, no significant cell cytotoxicity was observed against human liver cancer cells (HepG2), highlighting the potential of these developed 3D printed scaffolds for soft tissue engineering applications.
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Affiliation(s)
- Hossein Baniasadi
- Polymer Technology, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland
| | - Erfan Kimiaei
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto Espoo, Finland
| | - Roberta Teixeira Polez
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto Espoo, Finland
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto Espoo, Finland
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto Espoo, Finland; Bioproducts Institute, Departments of Chemical and Biological Engineering, Department of Chemistry and Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
| | - Monika Österberg
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto Espoo, Finland
| | - Jukka Seppälä
- Polymer Technology, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland.
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Kamkar M, Ghaffarkhah A, Ajdary R, Lu Y, Ahmadijokani F, Mhatre SE, Erfanian E, Sundararaj U, Arjmand M, Rojas OJ. Structured Ultra-Flyweight Aerogels by Interfacial Complexation: Self-Assembly Enabling Multiscale Designs. Small 2022; 18:e2200220. [PMID: 35279945 DOI: 10.1002/smll.202200220] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/20/2022] [Indexed: 06/14/2023]
Abstract
The rapid co-assembly of graphene oxide (GO) nanosheets and a surfactant at the oil/water (O/W) interface is harnessed to develop a new class of soft materials comprising continuous, multilayer, interpenetrated, and tubular structures. The process uses a microfluidic approach that enables interfacial complexation of two-phase systems, herein, termed as "liquid streaming" (LS). LS is demonstrated as a general method to design multifunctional soft materials of specific hierarchical order and morphology, conveniently controlled by the nature of the oil phase and extrusion's injection pressure, print-head speed, and nozzle diameter. The as-obtained LS systems can be readily converted into ultra-flyweight aerogels displaying worm-like morphologies with multiscale porosities (micro- and macro-scaled). The presence of reduced GO nanosheets in such large surface area systems renders materials with outstanding mechanical compressibility and tailorable electrical activity. This platform for engineering soft materials and solid constructs opens up new horizons toward advanced functionality and tunability, as demonstrated here for ultralight printed conductive circuits and electromagnetic interference shields.
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Affiliation(s)
- Milad Kamkar
- Department of Chemical and Biological Engineering, Department of Chemistry and Department of Wood Science, Bioproducts Institute, University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Ahmadreza Ghaffarkhah
- Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, BC, V1V 1V7, Canada
| | - Rubina Ajdary
- Department of Chemical and Biological Engineering, Department of Chemistry and Department of Wood Science, Bioproducts Institute, University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, Aalto, Espoo, FI-00076, Finland
| | - Yi Lu
- Department of Chemical and Biological Engineering, Department of Chemistry and Department of Wood Science, Bioproducts Institute, University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Farhad Ahmadijokani
- Department of Chemical and Biological Engineering, Department of Chemistry and Department of Wood Science, Bioproducts Institute, University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
- Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, BC, V1V 1V7, Canada
| | - Sameer E Mhatre
- Department of Chemical and Biological Engineering, Department of Chemistry and Department of Wood Science, Bioproducts Institute, University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Elnaz Erfanian
- Department of Chemical and Biological Engineering, Department of Chemistry and Department of Wood Science, Bioproducts Institute, University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Uttandaraman Sundararaj
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Mohammad Arjmand
- Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, BC, V1V 1V7, Canada
| | - Orlando J Rojas
- Department of Chemical and Biological Engineering, Department of Chemistry and Department of Wood Science, Bioproducts Institute, University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, Aalto, Espoo, FI-00076, Finland
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6
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Ajdary R, Abidnejad R, Lehtonen J, Kuula J, Raussi-Lehto E, Kankuri E, Tardy B, Rojas OJ. Bacterial nanocellulose enables auxetic supporting implants. Carbohydr Polym 2022; 284:119198. [DOI: 10.1016/j.carbpol.2022.119198] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 01/26/2022] [Accepted: 01/27/2022] [Indexed: 01/08/2023]
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Ajdary R, Reyes G, Kuula J, Raussi-Lehto E, Mikkola TS, Kankuri E, Rojas OJ. Direct Ink Writing of Biocompatible Nanocellulose and Chitosan Hydrogels for Implant Mesh Matrices. ACS Polym Au 2022; 2:97-107. [PMID: 35445214 PMCID: PMC9011395 DOI: 10.1021/acspolymersau.1c00045] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/23/2021] [Accepted: 11/29/2021] [Indexed: 01/28/2023]
Abstract
Direct ink writing via single or multihead extrusion is used to synthesize layer-by-layer (LbL) meshes comprising renewable polysaccharides. The best mechanical performance (683 ± 63 MPa modulus and 2.5 ± 0.4 MPa tensile strength) is observed for 3D printed structures with full infill density, given the role of electrostatic complexation between the oppositely charged components (chitosan and cellulose nanofibrils). The LbL structures develop an unexpectedly high wet stability that undergoes gradual weight loss at neutral and slightly acidic pH. The excellent biocompatibility and noncytotoxicity toward human monocyte/macrophages and controllable shrinkage upon solvent exchange make the cellular meshes appropriate for use as biomedical implants.
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Affiliation(s)
- Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, PO Box 16300, FI-00076 Aalto, Espoo, Finland.,Bioproducts Institute, Department of Chemical & Biological Engineering, Department of Chemistry and Department of Wood Science, 2360 East Mall, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Guillermo Reyes
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, PO Box 16300, FI-00076 Aalto, Espoo, Finland
| | - Jani Kuula
- Department of Neuroscience and Biomedical Engineering, School of Science, Aalto University, PO Box 16300, FI-00076 Aalto, Espoo, Finland
| | - Eija Raussi-Lehto
- Department of Neuroscience and Biomedical Engineering, School of Science, Aalto University, PO Box 16300, FI-00076 Aalto, Espoo, Finland.,R&D Development Services, Metropolia University of Applied Sciences, PL 4000, FI-00079, Metropolia, Helsinki, Finland
| | - Tomi S Mikkola
- Department of Obstetrics and Gynecology, University of Helsinki, and Helsinki University Hospital, 00290 Helsinki, Finland
| | - Esko Kankuri
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, 00290 Helsinki, Finland
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, PO Box 16300, FI-00076 Aalto, Espoo, Finland.,Bioproducts Institute, Department of Chemical & Biological Engineering, Department of Chemistry and Department of Wood Science, 2360 East Mall, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada
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Reyes G, Ajdary R, Yazdani MR, Rojas OJ. Hollow Filaments Synthesized by Dry-Jet Wet Spinning of Cellulose Nanofibrils: Structural Properties and Thermoregulation with Phase-Change Infills. ACS Appl Polym Mater 2022; 4:2908-2916. [PMID: 35425902 PMCID: PMC9003243 DOI: 10.1021/acsapm.2c00177] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/11/2022] [Indexed: 05/05/2023]
Abstract
We use dry-jet wet spinning in a coaxial configuration by extruding an aqueous colloidal suspension of oxidized nanocellulose (hydrogel shell) combined with airflow in the core. The coagulation of the hydrogel in a water bath results in hollow filaments (HF) that are drawn continuously at relatively high rates. Small-angle and wide-angle X-ray scattering (SAXS/WAXS) reveals the orientation and order of the cellulose sheath, depending on the applied shear flow and drying method (free-drying and drying under tension). The obtained dry HF show Young's modulus and tensile strength of up to 9 GPa and 66 MPa, respectively. Two types of phase-change materials (PCM), polyethylene glycol (PEG) and paraffin (PA), are used as infills to enable filaments for energy regulation. An increased strain (9%) is observed in the PCM-filled filaments (HF-PEG and HF-PA). The filaments display similar thermal behavior (dynamic scanning calorimetry) compared to the neat infill, PEG, or paraffin, reaching a maximum latent heat capacity of 170 J·g-1 (48-55 °C) and 169 J·g-1 (52-54 °C), respectively. Overall, this study demonstrates the facile and scalable production of two-component core-shell filaments that combine structural integrity, heat storage, and thermoregulation properties.
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Affiliation(s)
- Guillermo Reyes
- Biobased
Colloids and Materials, Department of Bioproducts and Biosystems,
School of Chemical Engineering, Aalto University, Espoo FI-00076, Finland
| | - Rubina Ajdary
- Biobased
Colloids and Materials, Department of Bioproducts and Biosystems,
School of Chemical Engineering, Aalto University, Espoo FI-00076, Finland
- Bioproducts
Institute, Department of Chemical & Biological Engineering, Department
of Chemistry and Department of Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
| | - Maryam R. Yazdani
- Department
of Mechanical Engineering, School of Engineering, Aalto University, Espoo FI-02150, Finland
| | - Orlando J. Rojas
- Biobased
Colloids and Materials, Department of Bioproducts and Biosystems,
School of Chemical Engineering, Aalto University, Espoo FI-00076, Finland
- Bioproducts
Institute, Department of Chemical & Biological Engineering, Department
of Chemistry and Department of Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
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Pang B, Ajdary R, Antonietti M, Rojas O, Filonenko S. Pickering emulgels reinforced with host-guest supramolecular inclusion complexes for high fidelity direct ink writing. Mater Horiz 2022; 9:835-840. [PMID: 34985072 DOI: 10.1039/d1mh01741a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Direct ink writing (DIW) of Pickering emulsions offers great potential for constructing on-demand objects. However, the rheological properties of fluid emulsions greatly undermines the shape fidelity and structural integrity of 3D-printed structures. We solve here these challenges and realize a new route towards complex constructs for actual deployment. A dynamic, supramolecular host-guest hydrogel based on poly(ethylene glycol) and α-cyclodextrin was synthesized in the continuous phase of cellulose nanocrystal-stabilized Pickering emulsions. The storage modulus of the obtained emulgels could reach up to ∼113 kPa, while being shear thinning and yielding precise printability. Diverse complex architectures were possible with high shape fidelity and structural integrity. The printed objects, for example a double-wall cylinder with 75 layers, demonstrated excellent dimensional stability (shrinkage of 7 ± 2% after freeze-drying). With the merits of a simple fabrication process and the high biocompatibility of all the components, the concept of dynamic supramolecular hydrogel-reinforced emulgels represent a potentially versatile route to construct new materials and structures VIA DIW for use in bioproducts and biomedical devices.
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Affiliation(s)
- Bo Pang
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Potsdam 14476, Germany.
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Vuorimiehentie 1, Espoo, FI-00076, Finland
| | - Markus Antonietti
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Potsdam 14476, Germany.
| | - Orlando Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Vuorimiehentie 1, Espoo, FI-00076, Finland
- The Bioproducts Institute, Department of Chemical and Biological Engineering, and Department of Chemistry and Wood Science, University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z4, Canada.
| | - Svitlana Filonenko
- Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, Potsdam 14476, Germany.
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Baniasadi H, Madani Z, Ajdary R, Rojas OJ, Seppälä J. Ascorbic acid-loaded polyvinyl alcohol/cellulose nanofibril hydrogels as precursors for 3D printed materials. Mater Sci Eng C Mater Biol Appl 2021; 130:112424. [PMID: 34702510 DOI: 10.1016/j.msec.2021.112424] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/23/2021] [Accepted: 09/05/2021] [Indexed: 12/26/2022]
Abstract
We proposed a simple method to process hydrogels containing polyvinyl alcohol and cellulose nanofibrils (PVA/CNF) to prepare volumetric architectures by direct ink writing (DIW). The presence of CNF in the aqueous PVA suspensions conferred rheology profiles that were suitable for extrusion and solidification in pre-designed shapes. The viscoelastic behavior of the hybrid inks enabled precise control on processability and shape retention, for instance, as demonstrated in multilayered lattice structures of high fidelity. After lyophilization, the obtained 3D-printed hydrogels presented a very high porosity, with open and interconnected pores, allowing a high-water uptake capacity (up to 1600%). The mechanical strength of the composite 3D-printed materials matched those of soft tissues, opening opportunities for skin applications. As such, drug-loaded samples revealed a controlled and efficient delivery of an antioxidant (ascorbic acid) in PBS buffer media at 23 °C (~80% for 8 h). Altogether, PVA/CNF hydrogels were introduced as suitable precursors of 3D-lattice geometries with excellent physical and mechanical characteristics.
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Affiliation(s)
- Hossein Baniasadi
- Polymer Technology, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland
| | - Zahraalsadat Madani
- Polymer Technology, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto, Espoo, Finland
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto, Espoo, Finland; Bioproducts Institute, Department of Chemical and Biological Engineering, Department of Chemistry and Department of Wood Science, University of British Columbia, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
| | - Jukka Seppälä
- Polymer Technology, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland.
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Ajdary R, Tardy BL, Mattos BD, Bai L, Rojas OJ. Plant Nanomaterials and Inspiration from Nature: Water Interactions and Hierarchically Structured Hydrogels. Adv Mater 2021; 33:e2001085. [PMID: 32537860 DOI: 10.1002/adma.202001085] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Revised: 03/08/2020] [Accepted: 03/20/2020] [Indexed: 05/26/2023]
Abstract
Recent developments in the area of plant-based hydrogels are introduced, especially those derived from wood as a widely available, multiscale, and hierarchical source of nanomaterials, as well as other cell wall elements. With water being fundamental in a hydrogel, water interactions, hydration, and swelling, all critically important in designing, processing, and achieving the desired properties of sustainable and functional hydrogels, are highlighted. A plant, by itself, is a form of a hydrogel, at least at given states of development, and for this reason phenomena such as fluid transport, diffusion, capillarity, and ionic effects are examined. These aspects are highly relevant not only to plants, especially lignified tissues, but also to the porous structures produced after removal of water (foams, sponges, cryogels, xerogels, and aerogels). Thus, a useful source of critical and comprehensive information is provided regarding the synthesis of hydrogels from plant materials (and especially wood nanostructures), and about the role of water, not only for processing but for developing hydrogel properties and uses.
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Affiliation(s)
- Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, Aalto, Espoo, FIN-00076, Finland
| | - Blaise L Tardy
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, Aalto, Espoo, FIN-00076, Finland
| | - Bruno D Mattos
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, Aalto, Espoo, FIN-00076, Finland
| | - Long Bai
- Departments of Chemical & Biological Engineering, Chemistry and, Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, Aalto, Espoo, FIN-00076, Finland
- Departments of Chemical & Biological Engineering, Chemistry and, Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, BC, V6T 1Z3, Canada
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12
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Baniasadi H, Ajdary R, Trifol J, Rojas OJ, Seppälä J. Direct ink writing of aloe vera/cellulose nanofibrils bio-hydrogels. Carbohydr Polym 2021; 266:118114. [PMID: 34044931 DOI: 10.1016/j.carbpol.2021.118114] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/14/2021] [Accepted: 04/19/2021] [Indexed: 02/06/2023]
Abstract
Direct-ink-writing (DIW) of hydrogels has become an attractive research area due to its capability to fabricate intricate, complex, and highly customizable structures at ambient conditions for various applications, including biomedical purposes. In the current study, cellulose nanofibrils reinforced aloe vera bio-hydrogels were utilized to develop 3D geometries through the DIW technique. The hydrogels revealed excellent viscoelastic properties enabled extruding thin filaments through a nozzle with a diameter of 630 μm. Accordingly, the lattice structures were printed precisely with a suitable resolution. The 3D-printed structures demonstrated significant wet stability due to the high aspect ratio of the nano- and microfibrils cellulose, reinforced the hydrogels, and protected the shape from extensive shrinkage upon drying. Furthermore, all printed samples had a porosity higher than 80% and a high-water uptake capacity of up to 46 g/g. Altogether, these fully bio-based, porous, and wet stable 3D structures might have an opportunity in biomedical fields.
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Affiliation(s)
- Hossein Baniasadi
- Polymer Technology, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto, Espoo, Finland
| | - Jon Trifol
- Polymer Technology, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FIN-00076 Aalto, Espoo, Finland; Bioproducts Institute, Departments of Chemical and Biological Engineering, Chemistry and Wood Science, University of British Columbia, 2360 East Mall, Vancouver, BC Canada V6T 1Z3
| | - Jukka Seppälä
- Polymer Technology, School of Chemical Engineering, Aalto University, Kemistintie 1, 02150 Espoo, Finland.
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13
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Yazdani MR, Ajdary R, Kankkunen A, Rojas OJ, Seppälä A. Cellulose Nanofibrils Endow Phase-Change Polyethylene Glycol with Form Control and Solid-to-gel Transition for Thermal Energy Storage. ACS Appl Mater Interfaces 2021; 13:6188-6200. [PMID: 33522810 PMCID: PMC7944486 DOI: 10.1021/acsami.0c18623] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 01/18/2021] [Indexed: 05/22/2023]
Abstract
Green energy-storage materials enable the sustainable use of renewable energy and waste heat. As such, a form-stable phase-change nanohybrid (PCN) is demonstrated to solve the fluidity and leakage issues typical of phase-change materials (PCMs). Here, we introduce the advantage of solid-to-gel transition to overcome the drawbacks of typical solid-to-liquid counterparts in applications related to thermal energy storage and regulation. Polyethylene glycol (PEG) is form-stabilized with cellulose nanofibrils (CNFs) through surface interactions. The cellulosic nanofibrillar matrix is shown to act as an organogelator of highly loaded PEG melt (85 wt %) while ensuring the absence of leakage. CNFs also preserve the physical structure of the PCM and facilitate handling above its fusion temperature. The porous CNF scaffold, its crystalline structure, and the ability to hold PEG in the PCN are characterized by optical and scanning electron imaging, infrared spectroscopy, and X-ray diffraction. By the selection of the PEG molecular mass, the lightweight PCN provides a tailorable fusion temperature in the range between 18 and 65 °C for a latent heat storage of up to 146 J/g. The proposed PCN shows remarkable repeatability in latent heat storage after 100 heating/cooling cycles as assessed by differential scanning calorimetry. The thermal regulation and light-to-heat conversion of the PCN are confirmed via infrared thermal imaging under simulated sunlight and in a thermal chamber, outperforming those of a reference, commercial insulation material. Our PCN is easily processed as a structurally stable design, including three-dimensional, two-dimensional (films), and one-dimensional (filaments) materials; they are, respectively, synthesized by direct ink writing, casting/molding, and wet spinning. We demonstrate the prospects of the lightweight, green nanohybrid for smart-energy buildings and waste heat-generating electronics for thermal energy storage and management.
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Affiliation(s)
- Maryam R. Yazdani
- Department
of Mechanical Engineering, School of Engineering, Aalto University, Espoo 02150, Finland
| | - Rubina Ajdary
- Department
of Bioproducts and Biosystems, School of Chemical Technology, Aalto University, Espoo 02150, Finland
| | - Ari Kankkunen
- Department
of Mechanical Engineering, School of Engineering, Aalto University, Espoo 02150, Finland
| | - Orlando J. Rojas
- Department
of Bioproducts and Biosystems, School of Chemical Technology, Aalto University, Espoo 02150, Finland
- Bioproducts
Institute, Departments of Chemical & Biological Engineering, Chemistry,
and Wood Science, The University of British
Columbia, 2360 East Mall, Vancouver BC V6T 1Z3, Canada
| | - Ari Seppälä
- Department
of Mechanical Engineering, School of Engineering, Aalto University, Espoo 02150, Finland
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14
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Shi X, Yazdani MR, Ajdary R, Rojas OJ. Leakage-proof microencapsulation of phase change materials by emulsification with acetylated cellulose nanofibrils. Carbohydr Polym 2020; 254:117279. [PMID: 33357855 DOI: 10.1016/j.carbpol.2020.117279] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 10/13/2020] [Accepted: 10/16/2020] [Indexed: 12/22/2022]
Abstract
We use acetylated cellulose nanofibrils (AcCNF) to stabilize transient emulsions with paraffin that becomes shape-stable and encapsulated phase change material (PCM) upon cooling. Rheology measurements confirm the gel behavior and colloidal stability of the solid suspensions. We study the effect of nanofiber content on PCM leakage upon melting and compare the results to those from unmodified CNF. The nanostructured cellulose promotes paraffin phase transition, which improves the efficiency of thermal energy exchange. The leakage-proof microcapsules display high energy absorption capacity (ΔHm = 173 J/g) at high PCM loading (up to 80 wt%), while effectively controlling the extent of supercooling. An excellent thermal stability is observed during at least 100 heating/cooling cycles. Degradation takes place at 291 °C, indicating good thermal stability. The high energy density and the effective shape and thermal stabilization of the AcCNF-encapsulated paraffin points to a sustainable solution for thermal energy storage and conversion.
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Affiliation(s)
- Xuetong Shi
- Department of Bioproducts and Biosystems, Aalto University, Espoo 02150, Finland
| | - Maryam R Yazdani
- Department of Mechanical Engineering, Aalto University, Espoo 02150, Finland.
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, Aalto University, Espoo 02150, Finland
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, Aalto University, Espoo 02150, Finland; Bioproducts Institute, Departments of Chemical & Biological Engineering, Chemistry, and Wood Science, 2360 East Mall, The University of British Columbia, Vancouver, BC V6T 1Z3, Canada.
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15
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Zhang X, Morits M, Jonkergouw C, Ora A, Valle-Delgado JJ, Farooq M, Ajdary R, Huan S, Linder M, Rojas O, Sipponen MH, Österberg M. Three-Dimensional Printed Cell Culture Model Based on Spherical Colloidal Lignin Particles and Cellulose Nanofibril-Alginate Hydrogel. Biomacromolecules 2020. [PMID: 31992046 DOI: 10.1021/acs.biomac.1879b01745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/24/2023]
Abstract
Three-dimensional (3D) printing has been an emerging technique to fabricate precise scaffolds for biomedical applications. Cellulose nanofibril (CNF) hydrogels have attracted considerable attention as a material for 3D printing because of their shear-thinning properties. Combining cellulose nanofibril hydrogels with alginate is an effective method to enable cross-linking of the printed scaffolds in the presence of Ca2+ ions. In this work, spherical colloidal lignin particles (CLPs, also known as spherical lignin nanoparticles) were used to prepare CNF-alginate-CLP nanocomposite scaffolds. High-resolution images obtained by atomic force microscopy (AFM) showed that CLPs were homogeneously mixed with the CNF hydrogel. CLPs brought antioxidant properties to the CNF-alginate-CLP scaffolds in a concentration-dependent manner and increased the viscosity of the hydrogels at a low shear rate, which correspondingly provide better shape fidelity and printing resolution to the scaffolds. Interestingly, the CLPs did not affect the viscosity at high shear rates, showing that the shear thinning behavior typical for CNF hydrogels was retained, enabling easy printing. The CNF-alginate-CLP scaffolds demonstrated shape stability after printing, cross-linking, and storage in Dulbecco's phosphate buffer solution (DPBS +) containing Ca2+ and Mg2+ ions, up to 7 days. The 3D-printed scaffolds showed relative rehydration ratio values above 80% after freeze-drying, demonstrating a high water-retaining capability. Cell viability tests using hepatocellular carcinoma cell line HepG2 showed no negative effect of CLPs on cell proliferation. Fluorescence microscopy indicated that HepG2 cells grew not only on the surfaces but also inside the porous scaffolds. Overall, our results demonstrate that nanocomposite CNF-alginate-CLP scaffolds have high potential in soft-tissue engineering and regenerative-medicine applications.
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Affiliation(s)
- Xue Zhang
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Maria Morits
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Christopher Jonkergouw
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Ari Ora
- Department of Applied Physics, School of Science, Aalto University, FIN-02150 Espoo, Finland
| | - Juan José Valle-Delgado
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Muhammad Farooq
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Siqi Huan
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Markus Linder
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Orlando Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Mika Henrikki Sipponen
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Monika Österberg
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
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16
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Zhang X, Morits M, Jonkergouw C, Ora A, Valle-Delgado JJ, Farooq M, Ajdary R, Huan S, Linder M, Rojas O, Sipponen MH, Österberg M. Three-Dimensional Printed Cell Culture Model Based on Spherical Colloidal Lignin Particles and Cellulose Nanofibril-Alginate Hydrogel. Biomacromolecules 2020; 21:1875-1885. [PMID: 31992046 PMCID: PMC7218745 DOI: 10.1021/acs.biomac.9b01745] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/24/2020] [Indexed: 01/09/2023]
Abstract
Three-dimensional (3D) printing has been an emerging technique to fabricate precise scaffolds for biomedical applications. Cellulose nanofibril (CNF) hydrogels have attracted considerable attention as a material for 3D printing because of their shear-thinning properties. Combining cellulose nanofibril hydrogels with alginate is an effective method to enable cross-linking of the printed scaffolds in the presence of Ca2+ ions. In this work, spherical colloidal lignin particles (CLPs, also known as spherical lignin nanoparticles) were used to prepare CNF-alginate-CLP nanocomposite scaffolds. High-resolution images obtained by atomic force microscopy (AFM) showed that CLPs were homogeneously mixed with the CNF hydrogel. CLPs brought antioxidant properties to the CNF-alginate-CLP scaffolds in a concentration-dependent manner and increased the viscosity of the hydrogels at a low shear rate, which correspondingly provide better shape fidelity and printing resolution to the scaffolds. Interestingly, the CLPs did not affect the viscosity at high shear rates, showing that the shear thinning behavior typical for CNF hydrogels was retained, enabling easy printing. The CNF-alginate-CLP scaffolds demonstrated shape stability after printing, cross-linking, and storage in Dulbecco's phosphate buffer solution (DPBS +) containing Ca2+ and Mg2+ ions, up to 7 days. The 3D-printed scaffolds showed relative rehydration ratio values above 80% after freeze-drying, demonstrating a high water-retaining capability. Cell viability tests using hepatocellular carcinoma cell line HepG2 showed no negative effect of CLPs on cell proliferation. Fluorescence microscopy indicated that HepG2 cells grew not only on the surfaces but also inside the porous scaffolds. Overall, our results demonstrate that nanocomposite CNF-alginate-CLP scaffolds have high potential in soft-tissue engineering and regenerative-medicine applications.
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Affiliation(s)
- Xue Zhang
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Maria Morits
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Christopher Jonkergouw
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Ari Ora
- Department
of Applied Physics, School of Science, Aalto
University, FIN-02150 Espoo, Finland
| | - Juan José Valle-Delgado
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Muhammad Farooq
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Rubina Ajdary
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Siqi Huan
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Markus Linder
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Orlando Rojas
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Mika Henrikki Sipponen
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
| | - Monika Österberg
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076 Aalto, Finland
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17
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Zanjanizadeh Ezazi N, Ajdary R, Correia A, Mäkilä E, Salonen J, Kemell M, Hirvonen J, Rojas OJ, Ruskoaho HJ, Santos HA. Fabrication and Characterization of Drug-Loaded Conductive Poly(glycerol sebacate)/Nanoparticle-Based Composite Patch for Myocardial Infarction Applications. ACS Appl Mater Interfaces 2020; 12:6899-6909. [PMID: 31967771 PMCID: PMC7450488 DOI: 10.1021/acsami.9b21066] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Heart tissue engineering is critical in the treatment of myocardial infarction, which may benefit from drug-releasing smart materials. In this study, we load a small molecule (3i-1000) in new biodegradable and conductive patches for application in infarcted myocardium. The composite patches consist of a biocompatible elastomer, poly(glycerol sebacate) (PGS), coupled with collagen type I, used to promote cell attachment. In addition, polypyrrole is incorporated because of its electrical conductivity and to induce cell signaling. Results from the in vitro experiments indicate a high density of cardiac myoblast cells attached on the patches, which stay viable for at least 1 month. The degradation of the patches does not show any cytotoxic effect, while 3i-1000 delivery induces cell proliferation. Conductive patches show high blood wettability and drug release, correlating with the rate of degradation of the PGS matrix. Together with the electrical conductivity and elongation characteristics, the developed biomaterial fits the mechanical, conductive, and biological demands required for cardiac treatment.
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Affiliation(s)
- Nazanin Zanjanizadeh Ezazi
- Drug Research Program,
Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical
Engineering, Aalto University, P.O. Box 16300, FI-00076 Aalto, Espoo, Finland
| | - Alexandra Correia
- Drug Research Program,
Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Ermei Mäkilä
- Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Jarno Salonen
- Laboratory of Industrial Physics, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - Marianna Kemell
- Department of Chemistry, University of
Helsinki, FI-00014 Helsinki, Finland
| | - Jouni Hirvonen
- Drug Research Program,
Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Orlando J. Rojas
- Department of Bioproducts and Biosystems, School of Chemical
Engineering, Aalto University, P.O. Box 16300, FI-00076 Aalto, Espoo, Finland
- Departments of Chemical
& Biological Engineering, Chemistry, and Wood Science, The University of British Columbia, 2360 East Mall, Vancouver, British Columbia V6T 1Z3, Canada
| | - Heikki J. Ruskoaho
- Drug Research Program, Division of Pharmacology and Pharmacotherapy, University of Helsinki, FI-00014 Helsinki, Finland
| | - Hélder A. Santos
- Drug Research Program,
Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014 Helsinki, Finland
- Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI-00014 Helsinki, Finland
- E-mail: .
Tel: +358 2941 59661
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18
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Wang L, Ezazi NZ, Liu L, Ajdary R, Xiang W, Borghei M, Santos HA, Rojas OJ. Microfibers synthesized by wet-spinning of chitin nanomaterials: mechanical, structural and cell proliferation properties. RSC Adv 2020; 10:29450-29459. [PMID: 35521134 PMCID: PMC9059162 DOI: 10.1039/d0ra06178f] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 08/03/2020] [Indexed: 12/20/2022] Open
Abstract
Partially deacetylated chitin nanofibers (ChNF) were isolated from shell residues derived from crab biomass and used to prepare hydrogels, which were easily transformed into continuous microfibers by wet-spinning. We investigated the effect of ChNF solid content, extrusion rate and coagulant type, which included organic (acetone) and alkaline (NaOH and ammonia) solutions, on wet spinning. The properties of the microfibers and associated phenomena were assessed by tensile strength, quartz crystal microgravimetry, dynamic vapor sorption (DVS), thermogravimetric analysis and wide-angle X-ray scattering (WAXS). The as-spun microfibers (14 GPa stiffness) comprised hierarchical structures with fibrils aligned in the lateral direction. The microfibers exhibited a remarkable water sorption capacity (up to 22 g g−1), while being stable in the wet state (50% of dry strength), which warrants consideration as biobased absorbent systems. In addition, according to cell proliferation and viability of rat cardiac myoblast H9c2 and mouse bone osteoblast K7M2, the wet-spun ChNF microfibers showed excellent results and can be considered as fully safe for biomedical uses, such as in sutures, wound healing patches and cell culturing. Chitin nanomaterials are wet-spun into microfibers that are biocompatible and show promise for their cell viability and proliferation.![]()
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Affiliation(s)
- Ling Wang
- Department of Bioproducts and Biosystems
- Aalto University
- 00076 Aalto
- Finland
| | - Nazanin Zanjanizadeh Ezazi
- Drug Research Program
- Division of Pharmaceutical Chemistry and Technology
- Faculty of Pharmacy
- University of Helsinki
- Helsinki
| | - Liang Liu
- College of Chemical Engineering
- Nanjing Forestry University
- Nanjing
- China
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems
- Aalto University
- 00076 Aalto
- Finland
| | - Wenchao Xiang
- Department of Bioproducts and Biosystems
- Aalto University
- 00076 Aalto
- Finland
| | - Maryam Borghei
- Department of Bioproducts and Biosystems
- Aalto University
- 00076 Aalto
- Finland
| | - Hélder A. Santos
- Drug Research Program
- Division of Pharmaceutical Chemistry and Technology
- Faculty of Pharmacy
- University of Helsinki
- Helsinki
| | - Orlando J. Rojas
- Department of Bioproducts and Biosystems
- Aalto University
- 00076 Aalto
- Finland
- Bioproducts Institute
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19
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Ajdary R, Huan S, Zanjanizadeh Ezazi N, Xiang W, Grande R, Santos HA, Rojas OJ. Acetylated Nanocellulose for Single-Component Bioinks and Cell Proliferation on 3D-Printed Scaffolds. Biomacromolecules 2019; 20:2770-2778. [PMID: 31117356 PMCID: PMC6620719 DOI: 10.1021/acs.biomac.9b00527] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 05/20/2019] [Indexed: 01/05/2023]
Abstract
Nanocellulose has been demonstrated as a suitable material for cell culturing, given its similarity to extracellular matrices. Taking advantage of the shear thinning behavior, nanocellulose suits three-dimensional (3D) printing into scaffolds that support cell attachment and proliferation. Here, we propose aqueous suspensions of acetylated nanocellulose of a low degree of substitution for direct ink writing (DIW). This benefits from the heterogeneous acetylation of precursor cellulosic fibers, which eases their deconstruction and confers the characteristics required for extrusion in DIW. Accordingly, the morphology of related 3D-printed architectures and their performance during drying and rewetting as well as interactions with living cells are compared with those produced from typical unmodified and TEMPO-oxidized nanocelluloses. We find that a significantly lower concentration of acetylated nanofibrils is needed to obtain bioinks of similar performance, affording more porous structures. Together with their high surface charge and axial aspect, acetylated nanocellulose produces dimensionally stable monolithic scaffolds that support drying and rewetting, required for packaging and sterilization. Considering their potential uses in cardiac devices, we discuss the interactions of the scaffolds with cardiac myoblast cells. Attachment, proliferation, and viability for 21 days are demonstrated. Overall, the performance of acetylated nanocellulose bioinks opens the possibility for reliable and scale-up fabrication of scaffolds appropriate for studies on cellular processes and for tissue engineering.
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Affiliation(s)
- Rubina Ajdary
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FI 00076 Aalto, Espoo, Finland
| | - Siqi Huan
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FI 00076 Aalto, Espoo, Finland
| | - Nazanin Zanjanizadeh Ezazi
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology,
Faculty of Pharmacy and Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI 00014 Helsinki, Finland
| | - Wenchao Xiang
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FI 00076 Aalto, Espoo, Finland
| | - Rafael Grande
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FI 00076 Aalto, Espoo, Finland
| | - Hélder A. Santos
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology,
Faculty of Pharmacy and Helsinki Institute of Life Science (HiLIFE), University of Helsinki, FI 00014 Helsinki, Finland
| | - Orlando J. Rojas
- Department
of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FI 00076 Aalto, Espoo, Finland
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20
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Abstract
Multiphase (emulsion) gels with internal phase fractions between 0.1 and 0.5 were formulated at low loadings of cellulose nanofibrils (CNF), alginate, and polylactide (PLA). Their properties (rheology and morphology) fitted those of inks used for direct ink writing (DIW). The effect of formulation and composition variables were elucidated after printing cubic scaffolds and other solid designs. The distinctive microstructures that were developed allowed high printing fidelity and displayed limited shrinkage after room temperature and freeze-drying (0 and 5% shrinkage in the out-of-plane and in-plane directions upon freeze-drying, respectively). The CNF added in the continuous phase was shown to be critical to achieve rheology control as an effective interfacial stabilizer and to ensure the printability of the ink toward high structural reliability. We found that the extent of shape retention of the dried scaffolds resulted from the tightly locked internal structure. The PLA that was initially added in the nonpolar or organic phase (0 to 12%) was randomly embedded in the entire scaffold, providing a strong resistance to shrinkage during the slow water evaporation at ambient temperature. No surface collapse or lateral deformation of the dried scaffolds occurred, indicating that the incorporation of PLA limited drying-induced shape failure. It also reduced compression strain by providing better CNF skeletal support, improving the mechanical strength. Upon rewetting, the combination of the hydrophilicity imparted by CNF and alginate together with the highly porous structure of the 3D material and the internal microchannels contributed to high water absorption via capillary and other phenomena (swelling % between ∼400 and 900%). However, no shape changes occurred compared to the initial 3D-printed shape. The swelling of the scaffolds correlated inversely with the PLA content in the precursor emulsion gel, providing a means to regulate the interaction with water given its low surface energy. Overall, the results demonstrate that by compatibilization of the CNF-based hydrophilic and the PLA-based hydrophobic components, it is possible to achieve shape control and retention upon 3D printing, opening the possibility of adopting low-solids inks for DIW into dry objects. The dryable CNF-based 3D structural materials absorb water while being able to support load (high elastic modulus) and maintain the shape upon hydration.
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Affiliation(s)
- Siqi Huan
- Department of Bioproducts and Biosystems, School of Chemical Engineering , Aalto University , P.O. Box 16300, FIN-00076 Aalto , Espoo , Finland
| | - Rubina Ajdary
- Department of Bioproducts and Biosystems, School of Chemical Engineering , Aalto University , P.O. Box 16300, FIN-00076 Aalto , Espoo , Finland
| | - Long Bai
- Department of Bioproducts and Biosystems, School of Chemical Engineering , Aalto University , P.O. Box 16300, FIN-00076 Aalto , Espoo , Finland
| | - Ville Klar
- Department of Mechanical Engineering, School of Engineering , Aalto University , P.O. Box 16300, FIN-00076 Aalto , Espoo , Finland
| | - Orlando J Rojas
- Department of Bioproducts and Biosystems, School of Chemical Engineering , Aalto University , P.O. Box 16300, FIN-00076 Aalto , Espoo , Finland
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21
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Lundahl MJ, Klar V, Ajdary R, Norberg N, Ago M, Cunha AG, Rojas OJ. Absorbent Filaments from Cellulose Nanofibril Hydrogels through Continuous Coaxial Wet Spinning. ACS Appl Mater Interfaces 2018; 10:27287-27296. [PMID: 30014693 PMCID: PMC6150648 DOI: 10.1021/acsami.8b08153] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 07/17/2018] [Indexed: 05/22/2023]
Abstract
A continuous and scalable method for the wet spinning of cellulose nanofibrils (CNFs) is introduced in a core/shell configuration. Control on the interfacial interactions was possible by the choice of the shell material and coagulant, as demonstrated here with guar gum (GG) and cellulose acetate (CA). Upon coagulation in acetone, ethanol, or water, GG and CA formed supporting polymer shells that interacted to different degrees with the CNF core. Coagulation rate was shown to markedly influence the CNF orientation in the filament and, as a result, its mechanical strength. The fastest coagulation noted for the CNF/GG core/shell system in acetone led to an orientation index of ∼0.55 (Herman's orientation parameter of 0.40), Young's modulus of ∼2.1 GPa, a tensile strength of ∼70 MPa, and a tenacity of ∼8 cN/tex. The system that underwent the slowest coagulation rate (CNF/GG in ethanol) displayed a limited CNF orientation but achieved an intermediate level of mechanical resistance, owing to the strong core/shell interfacial affinity. By using CA as the supporting shell, it was possible to spin CNF into filaments with high water absorption capacity (43 g water/g dry filament). This was explained by the fact that water (used as the coagulant for CA) limited the densification of the CNF core structure, yielding filaments with high accessible area and pore density.
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Affiliation(s)
- Meri J. Lundahl
- Department
of Bioproducts and Biosystems and Department of Mechanical Engineering, Aalto University, P.O.
Box 14100, Espoo 00076, Aalto, Finland
- E-mail: . Phone: +358 40 526 0787 (M.J.L.)
| | - Ville Klar
- Department
of Bioproducts and Biosystems and Department of Mechanical Engineering, Aalto University, P.O.
Box 14100, Espoo 00076, Aalto, Finland
| | - Rubina Ajdary
- Department
of Bioproducts and Biosystems and Department of Mechanical Engineering, Aalto University, P.O.
Box 14100, Espoo 00076, Aalto, Finland
| | | | - Mariko Ago
- Department
of Bioproducts and Biosystems and Department of Mechanical Engineering, Aalto University, P.O.
Box 14100, Espoo 00076, Aalto, Finland
| | - Ana Gisela Cunha
- Department
of Bioproducts and Biosystems and Department of Mechanical Engineering, Aalto University, P.O.
Box 14100, Espoo 00076, Aalto, Finland
| | - Orlando J. Rojas
- Department
of Bioproducts and Biosystems and Department of Mechanical Engineering, Aalto University, P.O.
Box 14100, Espoo 00076, Aalto, Finland
- E-mail: . Phone: +358 50 512 4227 (O.J.R.)
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