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Coelho I, Pires RF, Gonçalves SB, Bonifácio VDB, Faria M. Gas Permeability and Mechanical Properties of Polyurethane-Based Membranes for Blood Oxygenators. MEMBRANES 2022; 12:826. [PMID: 36135845 PMCID: PMC9502098 DOI: 10.3390/membranes12090826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/16/2022] [Accepted: 08/19/2022] [Indexed: 06/16/2023]
Abstract
The production of medical devices follows strict guidelines where bio- and hemocompatibility, mechanical strength, and tear resistance are important features. Segmented polyurethanes (PUs) are an important class of polymers that fulfill many of these requirements, thus justifying the investigation of novel derivatives with enhanced properties, such as modulated carbon dioxide and oxygen permeability. In this work, three segmented polyurethane-based membranes, containing blocks of hard segments (HSs) dispersed in a matrix of soft segment (SS) blocks, were prepared by reacting a PU prepolymer (PUR) with tris(hydroxymethyl)aminomethane (TRIS), Congo red (CR) and methyl-β-cyclodextrin (MBCD), rendering PU/TRIS, PU/CR and PU/MBCD membranes. The pure (control) PU membrane exhibited the highest degree of phase segregation between HSs and SSs followed by PU/TRIS and PU/MBCD membranes, and the PU/CR membrane displayed the highest degree of mixing. Pure PU and PU/CR membranes exhibited the highest and lowest values of Young's modulus, tangent moduli and ultimate tensile strength, respectively, suggesting that the introduction of CR increases molecular mobility, thus reducing stiffness. The CO2 permeability was highest for the PU/CR membrane, 347 Barrer, and lowest for the pure PU membrane, 278 Barrer, suggesting that a higher degree of mixing between HSs and SSs leads to higher CO2 permeation rates. The permeability of O2 was similar for all membranes, but ca. 10-fold lower than the CO2 permeability.
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Affiliation(s)
- Inês Coelho
- Center of Physics and Engineering of Advanced Materials (CeFEMA), Laboratory for Physics of Materials and Emerging Technologies (LaPMET), Chemical Engineering Department, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Rita F. Pires
- Center of Physics and Engineering of Advanced Materials (CeFEMA), Laboratory for Physics of Materials and Emerging Technologies (LaPMET), Chemical Engineering Department, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Sérgio B. Gonçalves
- IDMEC, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Vasco D. B. Bonifácio
- iBB-Institute for Bioengineering and Biosciences and i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
- Bioengeneering Department, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Mónica Faria
- Center of Physics and Engineering of Advanced Materials (CeFEMA), Laboratory for Physics of Materials and Emerging Technologies (LaPMET), Chemical Engineering Department, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
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Gradinaru LM, Barbalata-Mandru M, Drobota M, Aflori M, Spiridon M, Gradisteanu Pircalabioru G, Bleotu C, Butnaru M, Vlad S. Preparation and Evaluation of Nanofibrous Hydroxypropyl Cellulose and β-Cyclodextrin Polyurethane Composite Mats. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E754. [PMID: 32326486 PMCID: PMC7221721 DOI: 10.3390/nano10040754] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/04/2020] [Accepted: 04/13/2020] [Indexed: 02/02/2023]
Abstract
A series of nanofibrous composite mats based on polyurethane urea siloxane (PUUS), hydroxypropyl cellulose (HPC) and β-cyclodextrin (β-CD) was prepared using electrospinning technique. PUUS was synthesized by two steps solution polymerization procedure from polytetramethylene ether glycol (PTMEG), dimethylol propionic acid (DMPA), 4,4'-diphenylmethane diisocyanate (MDI) and 1,3-bis-(3-aminopropyl) tetramethyldisiloxane (BATD) as chain extender. Then, the composites were prepared by blending PUUS with HPC or βCD in a ratio of 9:1 (w/w), in 15% dimethylformamide (DMF). The PUUS and PUUS based composite solutions were used for preparation of nanofibrous mats. In order to identify the potential applications, different techniques were used to evaluate the chemical structure (Fourier transform infrared-attenuated total reflectance spectroscopy-FTIR-ATR), morphological structure (Scanning electron microscopy-SEM and Atomic force microscopy-AFM), surface properties (contact angle, dynamic vapors sorption-DVS), mechanical characteristics (tensile tests), thermal (differential scanning calorimetry-DSC) and some preliminary tests for biocompatibility and microbial adhesion.
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Affiliation(s)
- Luiza Madalina Gradinaru
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
| | - Mihaela Barbalata-Mandru
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
| | - Mioara Drobota
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
| | - Magdalena Aflori
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
| | - Maria Spiridon
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
| | | | - Coralia Bleotu
- Sanimed International Impex S.R.L, 70F Bucuresti—Măgurele, 051434 Bucuresti, Romania; (G.G.P.); (C.B.)
- “Stefan S Nicolau” Institute of Virology, 285 Mihai Bravu, 030304 Bucuresti, Romania
| | - Maria Butnaru
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
- Faculty of Medical Bioengineering, “Gr. T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Stelian Vlad
- “P. Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania; (M.B.-M.); (M.D.); (M.A.); (M.S.); (M.B.)
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Eusébio TM, Martins AR, Pon G, Faria M, Morgado P, Pinto ML, Filipe EJM, de Pinho MN. Sorption/Diffusion Contributions to the Gas Permeation Properties of Bi-Soft Segment Polyurethane/Polycaprolactone Membranes for Membrane Blood Oxygenators. MEMBRANES 2020; 10:membranes10010008. [PMID: 31906453 PMCID: PMC7023210 DOI: 10.3390/membranes10010008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 12/18/2019] [Accepted: 12/20/2019] [Indexed: 06/10/2023]
Abstract
Due to their high hemocompatibility and gas permeation capacity, bi-soft segment polyurethane/polycaprolactone (PU/PCL) polymers are promising materials for use in membrane blood oxygenators. In this work, both nonporous symmetric and integral asymmetric PU/PCL membranes were synthesized, and the permeation properties of the atmospheric gases N2, O2, and CO2 through these membranes were experimentally determined using a new custom-built gas permeation apparatus. Permeate pressure vs. time curves were obtained at 37.0 °C and gas feed pressures up to 5 bar. Fluxes, permeances, and permeability coefficients were determined from the steady-state part of the curves, and the diffusion and sorption coefficients were estimated from the analysis of the transient state using the time-lag method. Independent measurements of the sorption coefficients of the three gases were performed, under equilibrium conditions, in order to validate the new setup and procedure. This work shows that the gas sorption in the PU/PCL polymers is the dominant factor for the permeation properties of the atmospheric gases in these membranes.
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Affiliation(s)
- Tiago M. Eusébio
- Department of Chemical Engineering, CeFEMA—Center of Physics and Engineering of Advanced Materials, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; (T.M.E.); (A.R.M.); (G.P.); (M.F.)
- Department of Chemical Engineering, CQE—Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; (P.M.); (E.J.M.F.)
| | - Ana Rita Martins
- Department of Chemical Engineering, CeFEMA—Center of Physics and Engineering of Advanced Materials, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; (T.M.E.); (A.R.M.); (G.P.); (M.F.)
- Department of Chemical Engineering, CQE—Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; (P.M.); (E.J.M.F.)
| | - Gabriela Pon
- Department of Chemical Engineering, CeFEMA—Center of Physics and Engineering of Advanced Materials, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; (T.M.E.); (A.R.M.); (G.P.); (M.F.)
- Department of Chemical Engineering, CQE—Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; (P.M.); (E.J.M.F.)
| | - Mónica Faria
- Department of Chemical Engineering, CeFEMA—Center of Physics and Engineering of Advanced Materials, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; (T.M.E.); (A.R.M.); (G.P.); (M.F.)
| | - Pedro Morgado
- Department of Chemical Engineering, CQE—Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; (P.M.); (E.J.M.F.)
| | - Moisés L. Pinto
- Departamento de Engenharia Química, CERENA, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal;
| | - Eduardo J. M. Filipe
- Department of Chemical Engineering, CQE—Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; (P.M.); (E.J.M.F.)
| | - Maria Norberta de Pinho
- Department of Chemical Engineering, CeFEMA—Center of Physics and Engineering of Advanced Materials, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal; (T.M.E.); (A.R.M.); (G.P.); (M.F.)
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Faria M, Moreira C, Mendonça Eusébio T, de Pinho MN, Brogueira P, Semião V. Oxygen mass transfer in a gas/membrane/liquid system surrogate of membrane blood oxygenators. AIChE J 2018. [DOI: 10.1002/aic.16328] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mónica Faria
- Universidade de Lisboa Instituto Superior Tecnico; Center of Physics and Engineering of Advanced Materials, Dept. of Chemical Engineering; 1049-001, Lisbon Portugal
| | - Cíntia Moreira
- Universidade de Lisboa Instituto Superior Tecnico; Center of Physics and Engineering of Advanced Materials, Dept. of Chemical Engineering; 1049-001, Lisbon Portugal
| | - Tiago Mendonça Eusébio
- Universidade de Lisboa Instituto Superior Tecnico; Center of Physics and Engineering of Advanced Materials, Dept. of Chemical Engineering; 1049-001, Lisbon Portugal
| | - Maria Norberta de Pinho
- Universidade de Lisboa Instituto Superior Tecnico; Center of Physics and Engineering of Advanced Materials, Dept. of Chemical Engineering; 1049-001, Lisbon Portugal
| | - Pedro Brogueira
- Universidade de Lisboa Instituto Superior Tecnico; Center of Physics and Engineering of Advanced Materials, Dept. of Physics; 1049-001, Lisbon Portugal
| | - Viriato Semião
- Universidade de Lisboa Instituto Superior Tecnico; Associated Laboratory for Energy, Transports and Aeronautics, Institute of Mechanical Engineering and Dept. of Mechanical Engineering; 1049-001, Lisbon Portugal
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Faria M, de Pinho MN. Phase segregation and gas permeation properties of poly(urethane urea) bi-soft segment membranes. Eur Polym J 2016. [DOI: 10.1016/j.eurpolymj.2016.07.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Wang W, Huang X, Yin H, Fan W, Zhang T, Li L, Mao C. Polyethylene glycol acrylate-grafted polysulphone membrane for artificial lungs: plasma modification and haemocompatibility improvement. Biomed Mater 2015; 10:065022. [DOI: 10.1088/1748-6041/10/6/065022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Leszczak V, Smith BS, Popat KC. Hemocompatibility of polymeric nanostructured surfaces. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:1529-48. [PMID: 23848447 DOI: 10.1080/09205063.2013.777228] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Tissue integration is an important property when inducing transplant tolerance, however, the hemocompatibility of the biomaterial surface also plays an important role in the ultimate success of the implant. Therefore, in order to induce transplant tolerance, it is critical to understand the interaction of blood components with the material surfaces. In this study, we have investigated the adsorption of key blood serum proteins, in vitro adhesion and activation of platelets and clotting kinetics of whole blood on flat polycaprolactone (PCL) surfaces, nanowire (NW) surfaces and nanofiber (NF) surfaces. Previous studies have shown that polymeric nanostructured surfaces improve cell adhesion, proliferation and viability; however it is unclear how these polymeric nanostructured surfaces interact with the blood and its components. Protein adsorption results indicate that while there were no significant differences in total albumin (ALB) adsorption on PCL, NW and NF surfaces, NW surfaces had higher total fibrinogen (FIB) and immunoglobulin-G (IgG) adsorption compared to NF and PCL surfaces. In contrast, NF surfaces had higher surface FIB and IgG adsorption compared to PCL and NW surfaces. Platelet adhesion and viability studies show more adhesion and clustering of platelets on the NF surfaces as compared to PCL and NW surfaces. Platelet activation studies reveal that NW surfaces have the highest percentage of unactivated platelets, whereas NF surfaces have the highest percentage of fully activated platelets. Whole blood clotting results indicate that NW surfaces maintain an increased amount of free hemoglobin during the clotting process compared to PCL and NF surface, indicating less clotting and slower rate of clotting on their surfaces.
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Affiliation(s)
- Victoria Leszczak
- Department of Mechanical Engineering, Colorado State University, Fort Collins, CO, 80523, USA
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Qiu H, Li D, Chen X, Fan K, Ou W, Chen KC, Xu K. Synthesis, characterizations, and biocompatibility of block poly(ester-urethane)s based on biodegradable poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3/4HB) and poly(ε-caprolactone). J Biomed Mater Res A 2012; 101:75-86. [PMID: 22826204 DOI: 10.1002/jbm.a.34302] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 05/23/2012] [Accepted: 05/24/2012] [Indexed: 11/06/2022]
Abstract
A type of block poly(ester-urethane)s (abbreviated as PUBC) based on bacterial copolyester poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3/4HB) and biodegradable poly(ε-caprolactone) (PCL) was synthesized by melting polymerization using 1,6-hexamethylene diisocyanate (HDI) as the coupling agent, with different 3HB, 4HB and PCL contents and segment lengths. Stannous octanoate (Sn(Oct)(2)) was used as catalyst. The chemical structure, molecular weight and thermal property were characterized by (1)H NMR, FTIR GPC, DSC and TGA. DSC analysis revealed that the PUBC polyurethanes exhibit amorphous to semi-crystalline (20.9% crystallinity degree) with T(g) range from -39.7 to -21.5 °C. The hydrophilicity was investigated by static contact angle of deionized water and CH(2)I(2). The obtained PUBCs are hydrophobic (water contact angle 73.7-90.2°). Platelet adhesion study and plasma recalcification time revealed that the block polyurethanes possess hemastasis ability. CCK-8 assay illuminated that the no cytotoxic polyurethanes maintain rat aortic smooth muscle cells (RaSMCs) good viability. It was found that the 4HB content in the materials is an important factor to affect the sustainable cell viability.
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Affiliation(s)
- Handi Qiu
- Multidisciplinary Research Center, Shantou University, Shantou, Guangdong 515063, China
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Faria M, Rajagopalan M, de Pinho MN. Tailoring bi-soft segment poly (ester urethane urea) integral asymmetric membranes for CO2 and O2 permeation. J Memb Sci 2012. [DOI: 10.1016/j.memsci.2011.10.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Surface Characterization of Asymmetric Bi-Soft Segment Poly(ester urethane urea) Membranes for Blood-Oxygenation Medical Devices. Int J Biomater 2011; 2012:376321. [PMID: 22164163 PMCID: PMC3227468 DOI: 10.1155/2012/376321] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Accepted: 08/22/2011] [Indexed: 11/17/2022] Open
Abstract
Asymmetric bi-soft segment poly(ester urethane urea) (PEUU) membranes containing polycaprolactone (PCL) as a second soft segment are synthesized with PCL-diol ranging from 0% to 15% (w/w). Bulk and surface characteristics of the PEUU membranes were investigated by scanning electron microscopy (SEM), static water contact angles, and surface streaming potentials and were correlated to hemocompatibility properties, namely, hemolysis and thrombosis degrees. SEM analysis reveals PEUU membranes with asymmetric cross-sections and top dense surfaces with distinct morphologies. The increase in PCL-diol content yields PEUU membranes with blood-contacting surfaces that are smoother, more hydrophilic, and with higher maximum zeta potentials. The results obtained in this work give no evidence of a correlation between hydrophilicity/zeta potentials and the hemolysis/thrombosis degree of blood-contacting surfaces of the PEUU membranes. In contrast, other hemocompatibility aspects reveal that the more hydrophilic membranes are associated with lower platelet deposition and inhibition of extreme states of platelet activation.
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