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Etxeberria L, Aguilera U, Garcia de Madinabeitia P, Saez A, Zaldua AM, Vilas-Vilela JL, Fernández L, Llobera A. Critical Study on the Tube-to-Chip Luer Slip Connectors. Front Med Technol 2022; 4:881930. [PMID: 35711385 PMCID: PMC9194524 DOI: 10.3389/fmedt.2022.881930] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 04/26/2022] [Indexed: 11/13/2022] Open
Abstract
Luer slip is one of the gold standards for chip-to-world interface in microfluidics. They have outstanding mechanical and operational robustness in a broad range of applications using water and solvent-based liquids. Still, their main drawbacks are related to their size: they have relatively large dead volumes and require a significant footprint to assure a leak-free performance. Such aspects make their integration in systems with high microchannel density challenging. To date, there has been no geometrical optimization of the Luer slips to provide a solution to the mentioned drawbacks. This work aims to provide the rules toward downscaling the Luer slips. To this effect, seven variations of the Luer slip male connectors and five variations of Luer slip female connectors have been designed and manufactured focusing on the reduction of the size of connectors and minimization of the dead volumes. In all cases, female connectors have been developed to pair with the corresponding male connector. Characterization has been performed with a tailor-made test bench in which the closure force between male and female connectors has been varied between 7.9 and 55 N. For each applied closure force, the test bench allows liquid pressures to be tested between 0.5 and 2.0 bar. Finally, the analysis of a useful life determines the number of cycles that the connectors can withstand before leakage.
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Affiliation(s)
- Leire Etxeberria
- microLIQUID S.L, Arrasate-Mondragón, Spain
- Leartiker S. Coop., Markina-Xemein, Spain
- Macromolecular Chemistry Research Group (LabQuiMac), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain
- *Correspondence: Leire Etxeberria
| | | | | | | | | | - José L. Vilas-Vilela
- Macromolecular Chemistry Research Group (LabQuiMac), Department of Physical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain
- BC Materials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, Leioa, Spain
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Hermenegildo B, Meira RM, Correia D, Díez A, Ribeiro S, Serra J, Ribeiro C, Pérez-Álvarez L, Vilas-Vilela JL, Lanceros-Méndez S. Poly(lactic-co-glycolide) based biodegradable electrically and magnetically active microenvironments for tissue regeneration applications. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Hermenegildo B, Meira R, Díez A, Correia D, Ribeiro S, Serra J, Ribeiro C, Pérez-Álvarez L, Vilas-Vilela JL, Lanceros-Méndez S. Ionic liquid modified electroactive polymer-based microenvironments for tissue engineering. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Reizabal A, Costa CM, Saiz PG, Gonzalez B, Pérez-Álvarez L, Fernández de Luis R, Garcia A, Vilas-Vilela JL, Lanceros-Méndez S. Processing Strategies to Obtain Highly Porous Silk Fibroin Structures with Tailored Microstructure and Molecular Characteristics and Their Applicability in Water Remediation. J Hazard Mater 2021; 403:123675. [PMID: 32846265 DOI: 10.1016/j.jhazmat.2020.123675] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 08/05/2020] [Accepted: 08/07/2020] [Indexed: 06/11/2023]
Abstract
The present work reports on the control of silk fibroin (SF) porous structures performance through various processing methods. The study includes the analysis of two dissolving techniques (CaCl2/H2O/EtOH ternary and LiBr/H2O binary solutions), three regeneration methods (gelation, lyophilization and gas foaming) and one post-processing (EtOH). In all the cases, followed steps lead to SF structures with porosity values above 94% and large surface areas. Also, results about samples microstructure, secondary organization, crystallinity and water behavior, reveal a direct correlation between processing and SF properties. Thanks to the achieved progress, the SF varying porous structures were evaluated for metalloids (As5+ and As3+) and heavy metals (Cr6+ and Cr3+) adsorption, observing a direct relationship between samples processing and ionic species adsorption ability. Thus, it is shown that the control of the properties of SF based porous structures through processing, represents a suitable and ecofriendly approach for the development of bio-based materials for environmental applications.
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Affiliation(s)
- A Reizabal
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco/EHU, Apdo. 644, Bilbao, Spain.
| | - C M Costa
- Centro de Física, Universidade do Minho, 4710-057, Braga, Portugal; Centro de Química, Universidade do Minho, 4710-057, Braga, Portugal
| | - P G Saiz
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain
| | - B Gonzalez
- Advanced Mining Technology Center (AMTC), Universidad de Chile, Av. Tupper 2007, Santiago, 8370451, Chile
| | - L Pérez-Álvarez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco/EHU, Apdo. 644, Bilbao, Spain
| | - R Fernández de Luis
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain
| | - A Garcia
- Advanced Mining Technology Center (AMTC), Universidad de Chile, Av. Tupper 2007, Santiago, 8370451, Chile
| | - J L Vilas-Vilela
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco/EHU, Apdo. 644, Bilbao, Spain
| | - S Lanceros-Méndez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940, Leioa, Spain; Ikerbasque, Basque Foundation for Science, 48013, Bilbao, Spain
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Salazar H, Martins PM, Santos B, Fernandes MM, Reizabal A, Sebastián V, Botelho G, Tavares CJ, Vilas-Vilela JL, Lanceros-Mendez S. Photocatalytic and antimicrobial multifunctional nanocomposite membranes for emerging pollutants water treatment applications. Chemosphere 2020; 250:126299. [PMID: 32113095 DOI: 10.1016/j.chemosphere.2020.126299] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 02/15/2020] [Accepted: 02/20/2020] [Indexed: 06/10/2023]
Abstract
Emerging pollutants represent a new global problem for water quality. As these compounds get into the environment, they cause severe threats to aquatic environments and human health and are typically resistant to conventional wastewater treatments. In this work, TiO2 nanoparticles surface was functionalized with silver (Ag) nanoparticles, and solvent cast and electrospun membranes of poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) were prepared with different concentrations of TiO2 and Ag-TiO2 to produce a multifunctional material. The photocatalytic activity of the nanocomposites was evaluated through the degradation of norfloxacin under ultraviolet (UV) and visible radiation. It is shown that nanocomposites with Ag-TiO2 show the highest degradation efficiencies: 64.2% under UV and 80.7% under visible radiation, for 90 and 300 min, respectively. Furthermore, the recyclability of the membranes has also been demonstrated. Finally, it is shown the antimicrobial activity of the nanocomposite membranes, demonstrating the suitability of the Ag-TiO2/PVDF-HFP nanocomposites as multifunctional photocatalytic and antimicrobial membranes for water remediation applications.
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Affiliation(s)
- H Salazar
- Centre/Department of Physics, Portugal; Centre/Department of Chemistry, Portugal; IB-S - Institute for Research and Innovation on Bio-Sustainability, University of Minho, 4710-057, Braga, Portugal
| | - P M Martins
- Centre/Department of Physics, Portugal; Centre/Department of Chemistry, Portugal; IB-S - Institute for Research and Innovation on Bio-Sustainability, University of Minho, 4710-057, Braga, Portugal.
| | - Bruno Santos
- Centre/Department of Physics, Portugal; IB-S - Institute for Research and Innovation on Bio-Sustainability, University of Minho, 4710-057, Braga, Portugal
| | - M M Fernandes
- Centre/Department of Physics, Portugal; Centre/Department of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; IB-S - Institute for Research and Innovation on Bio-Sustainability, University of Minho, 4710-057, Braga, Portugal
| | - Ander Reizabal
- BCMaterials, Parque Científico y Tecnológico de Bizkaia, 48160, Derio, Spain
| | - Víctor Sebastián
- Chemical and Environmental Engineering Department, Instituto de Nanociencia de Aragón (INA) and Instituto de Ciencia de Materiales de Aragón (ICMA), Universidad de Zaragoza-CSIC, 50018, Zaragoza, Spain; Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBERBBN, 28029, Madrid, Spain
| | - G Botelho
- Centre/Department of Chemistry, Portugal
| | | | - José L Vilas-Vilela
- BCMaterials, Parque Científico y Tecnológico de Bizkaia, 48160, Derio, Spain; Macromolecular Chemistry Research Group (LABQUIMAC), Dept. of Physical Chemistry. Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Spain
| | - S Lanceros-Mendez
- BCMaterials, Parque Científico y Tecnológico de Bizkaia, 48160, Derio, Spain; IKERBASQUE, Basque Foundation for Science, 48013, Bilbao, Spain.
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Reizabal A, Correia DM, Costa CM, Perez-Alvarez L, Vilas-Vilela JL, Lanceros-Méndez S. Silk Fibroin Bending Actuators as an Approach Toward Natural Polymer Based Active Materials. ACS Appl Mater Interfaces 2019; 11:30197-30206. [PMID: 31330104 DOI: 10.1021/acsami.9b07533] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
This work reports on the development of ionic liquid (IL)/silk fibroin (SF) composite films as electroactive polymers actuators. Different contents (20, 40, and 60% wt) of 1-butyl-3-methylimidazolium tricyanomethanide ([Bmim][C(CN3)]) and choline dihydrogen phosphate ([Ch][DHP]) ILs were incorporated into the SF polymer matrix. Due to IL-SF interactions, morphological changes such as globule-like nanostructures are induced in the samples. High concentrations of IL promote SF β-sheet formation above 65%. Further, an increase in the thermal stability of the SF was observed through the incorporation of [Bmim][C(CN3)]. IL type and content allow tuning of the electrical response as well as achieving bending actuation. [Bmim][C(CN3)]/SF samples allow bending responses up to 0.5 at an applied voltage of 3 V. In conclusion, this work demonstrates the ability of IL/SF composites to act as electroactive polymer actuators and opens new perspectives in the application of natural resources for smart materials.
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Affiliation(s)
- Ander Reizabal
- BCMaterials, Basque Center for Materials, Applications and Nanostructures , UPV/EHU Science Park , 48940 Leioa , Spain
- Macromolecular Chemistry Research Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology , University of the Basque Country (UPV/EHU) , 48940 Leioa , Spain
| | - Daniela M Correia
- Department of Chemistry and CQ-VR , Universidade de Trás-os-Montes e Alto Douro , 5000-801 Vila Real , Portugal
- Center of Physics , University of Minho , 4710-058 Braga , Portugal
| | - Carlos M Costa
- Center of Physics , University of Minho , 4710-058 Braga , Portugal
- Center of Chemist , University of Minho , 4710-058 Braga , Portugal
| | - Leyre Perez-Alvarez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures , UPV/EHU Science Park , 48940 Leioa , Spain
- Macromolecular Chemistry Research Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology , University of the Basque Country (UPV/EHU) , 48940 Leioa , Spain
| | - José L Vilas-Vilela
- BCMaterials, Basque Center for Materials, Applications and Nanostructures , UPV/EHU Science Park , 48940 Leioa , Spain
- Macromolecular Chemistry Research Group (LABQUIMAC), Department of Physical Chemistry, Faculty of Science and Technology , University of the Basque Country (UPV/EHU) , 48940 Leioa , Spain
| | - S Lanceros-Méndez
- BCMaterials, Basque Center for Materials, Applications and Nanostructures , UPV/EHU Science Park , 48940 Leioa , Spain
- Ikerbasque , Basque Foundation for Science , 48013 Bilbao , Spain
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