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Zhang Y, Tan L, Han N, Tian S, Li W, Wang W, Wu Y, Sun Z, Zhang X. Janus ZIF-8/P(AN-MA) hybrid microfiltration membrane with selected wettability for highly efficient separation of water/oil emulsions. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Zeinali R, Franco L, del Valle LJ, Puiggalí J. Poly(butylene succinate) matrices obtained by thermally-induced phase separation: Pore shape and orientation affect drug release. POLYMER 2022; 252:124916. [DOI: 10.1016/j.polymer.2022.124916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Zeinali R, del Valle LJ, Franco L, Yousef I, Rintjema J, Alemán C, Bravo F, Kleij AW, Puiggalí J. Biobased Terpene Derivatives: Stiff and Biocompatible Compounds to Tune Biodegradability and Properties of Poly(butylene succinate). Polymers (Basel) 2021; 14:polym14010161. [PMID: 35012183 PMCID: PMC8747377 DOI: 10.3390/polym14010161] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 12/28/2021] [Accepted: 12/29/2021] [Indexed: 12/24/2022] Open
Abstract
Different copolymers incorporating terpene oxide units (e.g., limonene oxide) have been evaluated considering thermal properties, degradability, and biocompatibility. Thus, polycarbonates and polyesters derived from aromatic, monocyclic and bicyclic anhydrides have been considered. Furthermore, ring substitution with myrcene terpene has been evaluated. All polymers were amorphous when evaluated directly from synthesis. However, spherulites could be observed after the slow evaporation of diluted chloroform solutions of polylimonene carbonate, with all isopropene units possessing an R configuration. This feature was surprising considering the reported information that suggested only the racemic polymer was able to crystallize. All polymers were thermally stable and showed a dependence of the maximum degradation rate temperature (from 242 °C to 342 °C) with the type of terpene oxide. The graduation of glass transition temperatures (from 44 °C to 172 °C) was also observed, being higher than those corresponding to the unsubstituted polymers. The chain stiffness of the studied polymers hindered both hydrolytic and enzymatic degradation while a higher rate was detected when an oxidative medium was assayed (e.g., weight losses around 12% after 21 days of exposure). All samples were biocompatible according to the adhesion and proliferation tests performed with fibroblast cells. Hydrophobic and mechanically consistent films (i.e., contact angles between 90° and 110°) were obtained after the evaporation of chloroform from the solutions, having different ratios of the studied biobased polyterpenes and poly(butylene succinate) (PBS). The blend films were comparable in tensile modulus and tensile strength with the pure PBS (e.g., values of 330 MPa and 7 MPa were determined for samples incorporating 30 wt.% of poly(PA-LO), the copolyester derived from limonene oxide and phthalic anhydride. Blends were degradable, biocompatible and appropriate to produce oriented-pore and random-pore scaffolds via a thermally-induced phase separation (TIPS) method and using 1,4-dioxane as solvent. The best results were attained with the blend composed of 70 wt.% PBS and 30 wt.% poly(PA-LO). In summary, the studied biobased terpene derivatives showed promising properties to be used in a blended form for biomedical applications such as scaffolds for tissue engineering.
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Affiliation(s)
- Reza Zeinali
- Departament d’Enginyeria Química, EEBE, Universitat Politècnica de Catalunya, 08019 Barcelona, Spain; (R.Z.); (L.F.); (C.A.)
| | - Luis J. del Valle
- Departament d’Enginyeria Química, EEBE, Universitat Politècnica de Catalunya, 08019 Barcelona, Spain; (R.Z.); (L.F.); (C.A.)
- Center for Research in Nano-Engineering, CrNE, Universitat Politècnica de Catalunya, C. Eduard Maristany, 08019 Barcelona, Spain
- Correspondence: (L.J.d.V.); (J.P.)
| | - Lourdes Franco
- Departament d’Enginyeria Química, EEBE, Universitat Politècnica de Catalunya, 08019 Barcelona, Spain; (R.Z.); (L.F.); (C.A.)
- Center for Research in Nano-Engineering, CrNE, Universitat Politècnica de Catalunya, C. Eduard Maristany, 08019 Barcelona, Spain
| | - Ibraheem Yousef
- ALBA Synchrotron Light Source, Carrer de la Llum, 2-26, Cerdanyola del Vallès, 08290 Barcelona, Spain;
| | - Jeroen Rintjema
- ICREA—Catalan Institution for Research and Advanced Studies, 08010 Barcelona, Spain;
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, 43007 Tarragona, Spain; (F.B.); (A.W.K.)
| | - Carlos Alemán
- Departament d’Enginyeria Química, EEBE, Universitat Politècnica de Catalunya, 08019 Barcelona, Spain; (R.Z.); (L.F.); (C.A.)
- Center for Research in Nano-Engineering, CrNE, Universitat Politècnica de Catalunya, C. Eduard Maristany, 08019 Barcelona, Spain
- Institute for Bioengineering of Catalonia, Baldiri Reixac 10-12, 08028 Barcelona, Spain
| | - Fernando Bravo
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, 43007 Tarragona, Spain; (F.B.); (A.W.K.)
| | - Arjan W. Kleij
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology, 43007 Tarragona, Spain; (F.B.); (A.W.K.)
| | - Jordi Puiggalí
- Departament d’Enginyeria Química, EEBE, Universitat Politècnica de Catalunya, 08019 Barcelona, Spain; (R.Z.); (L.F.); (C.A.)
- Center for Research in Nano-Engineering, CrNE, Universitat Politècnica de Catalunya, C. Eduard Maristany, 08019 Barcelona, Spain
- Institute for Bioengineering of Catalonia, Baldiri Reixac 10-12, 08028 Barcelona, Spain
- Correspondence: (L.J.d.V.); (J.P.)
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Raimo M. Impact of Thermal Properties on Crystalline Structure, Polymorphism and Morphology of Polymer Matrices in Composites. Materials (Basel) 2021; 14:ma14092136. [PMID: 33922297 PMCID: PMC8122767 DOI: 10.3390/ma14092136] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 04/17/2021] [Accepted: 04/19/2021] [Indexed: 11/23/2022]
Abstract
Morphological analysis at different levels is fundamental to understand properties of materials, as these latter are dictated not only by the chemical composition but also by the shape. Solid structures arise from a balance between thermodynamic and kinetic factors, which, especially for polymer composites, depend also on interactions amongst components. In particular, morphology is strongly affected by the heat transfer pattern during crystallization and by the difference in thermal behavior between polymer matrix and filler. Polymers show a spherulitic structure, arising from the start of crystallization in several points of the liquid phase. Within a general rounded shape, spherulites show variability in growth patterns, morphology, and geometry of boundaries. The appearance and the number of spherulites, as well as their growth mechanism, may vary not only in dependence of the chemical composition and the crystalline structures but also, for a same polymer, in consequence of experimental conditions and incorporation of fillers. This article reviews the crystallization process of polymer matrices in the framework of crystal growth and heat transport theories, and explains microstructural differences between composites and neat matrices on the basis of the differences in thermal capacity and conductivity between polymers and additives.
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Affiliation(s)
- Maria Raimo
- Institute for Polymers, Composites and Biomaterials, National Research Council, Via Campi Flegrei 34, 80078 Pozzuoli, Italy
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Zeinali R, del Valle LJ, Torras J, Puiggalí J. Recent Progress on Biodegradable Tissue Engineering Scaffolds Prepared by Thermally-Induced Phase Separation (TIPS). Int J Mol Sci 2021; 22:ijms22073504. [PMID: 33800709 PMCID: PMC8036748 DOI: 10.3390/ijms22073504] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 03/24/2021] [Accepted: 03/25/2021] [Indexed: 12/23/2022] Open
Abstract
Porous biodegradable scaffolds provide a physical substrate for cells allowing them to attach, proliferate and guide the formation of new tissues. A variety of techniques have been developed to fabricate tissue engineering (TE) scaffolds, among them the most relevant is the thermally-induced phase separation (TIPS). This technique has been widely used in recent years to fabricate three-dimensional (3D) TE scaffolds. Low production cost, simple experimental procedure and easy processability together with the capability to produce highly porous scaffolds with controllable architecture justify the popularity of TIPS. This paper provides a general overview of the TIPS methodology applied for the preparation of 3D porous TE scaffolds. The recent advances in the fabrication of porous scaffolds through this technique, in terms of technology and material selection, have been reviewed. In addition, how properties can be effectively modified to serve as ideal substrates for specific target cells has been specifically addressed. Additionally, examples are offered with respect to changes of TIPS procedure parameters, the combination of TIPS with other techniques and innovations in polymer or filler selection.
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Affiliation(s)
- Reza Zeinali
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, Escola d’Enginyeria de Barcelona Est-EEBE, 08019 Barcelona, Spain; (L.J.d.V.); (J.T.)
- Correspondence: (R.Z.); (J.P.); Tel.: +34-93-401-1620 (R.Z.); +34-93-401-5649 (J.P.)
| | - Luis J. del Valle
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, Escola d’Enginyeria de Barcelona Est-EEBE, 08019 Barcelona, Spain; (L.J.d.V.); (J.T.)
| | - Joan Torras
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, Escola d’Enginyeria de Barcelona Est-EEBE, 08019 Barcelona, Spain; (L.J.d.V.); (J.T.)
| | - Jordi Puiggalí
- Departament d’Enginyeria Química, Universitat Politècnica de Catalunya, Escola d’Enginyeria de Barcelona Est-EEBE, 08019 Barcelona, Spain; (L.J.d.V.); (J.T.)
- Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, c/Baldiri Reixac 10-12, 08028 Barcelona, Spain
- Correspondence: (R.Z.); (J.P.); Tel.: +34-93-401-1620 (R.Z.); +34-93-401-5649 (J.P.)
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