1
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Li F, Weng K, Nakamura A, Ono K, Tanaka T, Noda D, Tanaka M, Irifune S, Sato H. Preparation of Waterborne Silicone-Modified Polyurethane Nanofibers and the Effect of Crosslinking Agents on Physical Properties. Polymers (Basel) 2024; 16:1500. [PMID: 38891447 PMCID: PMC11174862 DOI: 10.3390/polym16111500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 05/17/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024] Open
Abstract
Silicone-modified polyurethane (PUSX) refers to the introduction of a silicone short chain into the polyurethane chain to make it have the dual properties of silicone and polyurethane (PU). It can be used in many fields, such as coatings, films, molding products, adhesives, and so on. The use of organic solvents to achieve the fiberization of silicone-modified polyurethane has been reported. However, it is challenging to achieve the fiberization of silicone-modified polyurethane based on an environmentally friendly water solvent. Herein, we report a simple and powerful strategy to fabricate environmentally friendly waterborne silicone-modified polyurethane nanofiber membranes through the addition of polyethylene glycol (PEG) with different molecular weights using electrospinning technology and in situ doping with three crosslinking agents with different functional groups (a polyoxazoline crosslinking agent, a polycarbodiimide crosslinking agent, and a polyisocyanate crosslinking agent) combined with various heating treatment conditions. The influence of PEG molecular weight on fiber formation was explored. The morphology, structure, water resistance, and mechanical properties were analyzed regarding the effect of the introduction of silicone into PU. The effects of the type and content of crosslinking agent on the morphology and physical properties of PUSX nanofiber membranes are discussed. These results show that the introduction of silicone can improve the water resistance and high temperature resistance of waterborne PU, and the addition of a crosslinking agent can further improve the water resistance of the sample, so that the sample can maintain good morphology after immersion. Crosslinking agents with different functional groups had different effects on the mechanical properties of PUSX nanofiber membranes due to different reactions. Among them, the oxazoline crosslinking agent had a significant effect on improving tensile strength, while the isocyanate crosslinking agent had a significant effect on improving the elongation at break. The PUSX nanofiber membrane prepared in this work did not use organic solvents that were harmful to humans and the environment, and it can be used in outdoor textiles, oil-water separation, medical health, and other fields.
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Affiliation(s)
- Fang Li
- Interdisciplinary Graduate School of Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda-Shi 386-8567, Nagano, Japan; (F.L.); (K.W.)
| | - Kai Weng
- Interdisciplinary Graduate School of Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda-Shi 386-8567, Nagano, Japan; (F.L.); (K.W.)
| | - Asumi Nakamura
- Interdisciplinary Graduate School of Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda-Shi 386-8567, Nagano, Japan; (F.L.); (K.W.)
| | - Keishiro Ono
- Interdisciplinary Graduate School of Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda-Shi 386-8567, Nagano, Japan; (F.L.); (K.W.)
| | - Toshihisa Tanaka
- Interdisciplinary Graduate School of Science and Technology, Shinshu University, 3-15-1, Tokida, Ueda-Shi 386-8567, Nagano, Japan; (F.L.); (K.W.)
| | - Daisuke Noda
- Silicone-Electronics Materials Research Center, Shin-Etsu Chemical Co., Ltd., 1-10, Hitomi, Matsuida-Machi, Annaka-Shi 379-0224, Gunma, Japan
| | - Masaki Tanaka
- Silicone-Electronics Materials Research Center, Shin-Etsu Chemical Co., Ltd., 1-10, Hitomi, Matsuida-Machi, Annaka-Shi 379-0224, Gunma, Japan
| | - Shinji Irifune
- Silicone-Electronics Materials Research Center, Shin-Etsu Chemical Co., Ltd., 1-10, Hitomi, Matsuida-Machi, Annaka-Shi 379-0224, Gunma, Japan
| | - Hiromasa Sato
- Dainichiseika Color & Chemicals Mfg. Co., Ltd., 2087-4, Ohta, Sakura-Shi 285-0808, Chiba, Japan
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2
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Aguirre M, Ballard N, Gonzalez E, Hamzehlou S, Sardon H, Calderon M, Paulis M, Tomovska R, Dupin D, Bean RH, Long TE, Leiza JR, Asua JM. Polymer Colloids: Current Challenges, Emerging Applications, and New Developments. Macromolecules 2023; 56:2579-2607. [PMID: 37066026 PMCID: PMC10101531 DOI: 10.1021/acs.macromol.3c00108] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/02/2023] [Indexed: 04/18/2023]
Abstract
Polymer colloids are complex materials that have the potential to be used in a vast array of applications. One of the main reasons for their continued growth in commercial use is the water-based emulsion polymerization process through which they are generally synthesized. This technique is not only highly efficient from an industrial point of view but also extremely versatile and permits the large-scale production of colloidal particles with controllable properties. In this perspective, we seek to highlight the central challenges in the synthesis and use of polymer colloids, with respect to both existing and emerging applications. We first address the challenges in the current production and application of polymer colloids, with a particular focus on the transition toward sustainable feedstocks and reduced environmental impact in their primary commercial applications. Later, we highlight the features that allow novel polymer colloids to be designed and applied in emerging application areas. Finally, we present recent approaches that have used the unique colloidal nature in unconventional processing techniques.
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Affiliation(s)
- Miren Aguirre
- POLYMAT,
Kimika Fakultatea, University of the Basque
Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain
| | - Nicholas Ballard
- POLYMAT,
Kimika Fakultatea, University of the Basque
Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain
- IKERBASQUE,
Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
| | - Edurne Gonzalez
- POLYMAT,
Kimika Fakultatea, University of the Basque
Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain
| | - Shaghayegh Hamzehlou
- POLYMAT,
Kimika Fakultatea, University of the Basque
Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain
| | - Haritz Sardon
- POLYMAT,
Kimika Fakultatea, University of the Basque
Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain
| | - Marcelo Calderon
- POLYMAT,
Kimika Fakultatea, University of the Basque
Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain
- IKERBASQUE,
Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
| | - Maria Paulis
- POLYMAT,
Kimika Fakultatea, University of the Basque
Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain
| | - Radmila Tomovska
- POLYMAT,
Kimika Fakultatea, University of the Basque
Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain
- IKERBASQUE,
Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
| | - Damien Dupin
- CIDETEC,
Parque Científico y Tecnológico de Gipuzkoa, P° Miramón 196, 20014 Donostia-San Sebastian, Spain
| | - Ren H. Bean
- Biodesign
Institute, Center for Sustainable Macromolecular Materials and Manufacturing
(SM3), School of Molecular Sciences, Arizona
State University, Tempe, Arizona 85281, United States
| | - Timothy E. Long
- Biodesign
Institute, Center for Sustainable Macromolecular Materials and Manufacturing
(SM3), School of Molecular Sciences, Arizona
State University, Tempe, Arizona 85281, United States
| | - Jose R. Leiza
- POLYMAT,
Kimika Fakultatea, University of the Basque
Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain
| | - José M. Asua
- POLYMAT,
Kimika Fakultatea, University of the Basque
Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastian, Spain
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3
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Lin L, Xu Y, Sun Z. Study on electroactive shape memory behaviors of polyvinyl alcohol/waterborne polyurethane/short carbon fiber composites. J Appl Polym Sci 2022. [DOI: 10.1002/app.51737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Liulan Lin
- National Demonstration Center for Experimental Engineering Training Education Shanghai University Shanghai China
- Shanghai Key Laboratory of Smart Manufacturing and Robotics Shanghai University Shanghai China
| | - Yi Xu
- National Demonstration Center for Experimental Engineering Training Education Shanghai University Shanghai China
| | - Zhanli Sun
- National Demonstration Center for Experimental Engineering Training Education Shanghai University Shanghai China
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4
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Gonzalez E, Barquero A, Muñoz-Sanchez B, Paulis M, Leiza JR. Green Electrospinning of Polymer Latexes: A Systematic Study of the Effect of Latex Properties on Fiber Morphology. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:706. [PMID: 33799700 PMCID: PMC7999345 DOI: 10.3390/nano11030706] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/06/2021] [Accepted: 03/08/2021] [Indexed: 11/16/2022]
Abstract
Green electrospinning is a relatively new promising technology in which a polymer (latex) can be spun from an aqueous dispersion with the help of a template polymer. This method is a green, clean and safe technology that is able to spin hydrophobic polymers using water as an electrospinning medium. In this article, a systematic study that investigates the influence of the template polymer molar mass, the total solids content of the initial dispersion and the particle/template ratio is presented. Furthermore, the influence of the surfactant used to stabilize the polymer particles, the surface functionality of the polymer particles and the use of a bimodal particle size distribution on the final fiber morphology is studied for the first time. In green electrospinning, the viscosity of the initial complex blend depends on the amount and molar mass of the template polymer but also on the total solids content of the dispersion to be spun. Thus, both parameters must be carefully taken into account in order to fine-tune the final fiber morphology. Additionally, the particle packing and the surface chemistry of the polymer particles also play an important role in the obtained nanofibers quality.
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Affiliation(s)
- Edurne Gonzalez
- POLYMAT, Kimika Aplikatua Saila, Kimika Fakultatea, University of the Basque Country UPV/EHU, Joxe Mari Korta Zentroa, Tolosa Hiribidea 72, 20018 Donostia-San Sebastián, Spain; (A.B.); (B.M.-S.); (M.P.); (J.R.L.)
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5
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Advances in Waterborne Polyurethane and Polyurethane-Urea Dispersions and Their Eco-friendly Derivatives: A Review. Polymers (Basel) 2021; 13:polym13030409. [PMID: 33514067 PMCID: PMC7865350 DOI: 10.3390/polym13030409] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/22/2021] [Accepted: 01/25/2021] [Indexed: 01/05/2023] Open
Abstract
Polyurethanes and polyurethane-ureas, particularly their water-based dispersions, have gained relevance as an extremely versatile area based on environmentally friendly approaches. The evolution of their synthesis methods, and the nature of the reactants (or compounds involved in the process) towards increasingly sustainable pathways, has positioned these dispersions as a relevant and essential product for diverse application frameworks. Therefore, in this work, it is intended to show the progress in the field of polyurethane and polyurethane-urea dispersions over decades, since their initial synthesis approaches. Thus, the review covers from the basic concepts of polyurethane chemistry to the evolution of the dispersion's preparation strategies. Moreover, an analysis of the recent trends of using renewable reactants and enhanced green strategies, including the current legislation, directed to limit the toxicity and potentiate the sustainability of dispersions, is described. The review also highlights the strengths of the dispersions added with diverse renewable additives, namely, cellulose, starch or chitosan, providing some noteworthy results. Similarly, dispersion's potential to be processed by diverse methods is shown, evidencing, with different examples, their suitability in a variety of scenarios, outstanding their versatility even for high requirement applications.
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6
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Chen Y, Long X, Lin W, Du B, Yin H, Lan W, Zhao D, Li Z, Li J, Luo F, Tan H. Bioactive 3D porous cobalt-doped alginate/waterborne polyurethane scaffolds with a coral reef-like rough surface for nerve tissue engineering application. J Mater Chem B 2021; 9:322-335. [DOI: 10.1039/d0tb02347g] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Bioactive 3D porous cobalt-doped alginate/waterborne polyurethane scaffolds with a coral reef-like rough surface were prepared for nerve tissue engineering application.
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7
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Zhang C, Wang J, Xie Y, Wang L, Yang L, Yu J, Miyamoto A, Sun F. Development of FGF-2-loaded electrospun waterborne polyurethane fibrous membranes for bone regeneration. Regen Biomater 2020; 8:rbaa046. [PMID: 33732492 PMCID: PMC7947599 DOI: 10.1093/rb/rbaa046] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/06/2020] [Accepted: 09/11/2020] [Indexed: 12/24/2022] Open
Abstract
Guided bone regeneration (GBR) membrane has been used to improve functional outcomes for periodontal regeneration. However, few studies have focused on the biomimetic membrane mimicking the vascularization of the periodontal membrane. This study aimed to fabricate waterborne polyurethane (WPU) fibrous membranes loaded fibroblast growth factor-2 (FGF-2) via emulsion electrospinning, which can promote regeneration of periodontal tissue via the vascularization of the biomimetic GBR membrane. A biodegradable WPU was synthesized by using lysine and dimethylpropionic acid as chain extenders according to the rule of green chemical synthesis technology. The WPU fibers with FGF-2 was fabricated via emulsion electrospinning. The results confirmed that controlled properties of the fibrous membrane had been achieved with controlled degradation, suitable mechanical properties and sustained release of the factor. The immunohistochemical expression of angiogenic-related factors was positive, meaning that FGF-2 loaded in fibers can significantly promote cell vascularization. The fiber scaffold loaded FGF-2 has the potential to be used as a functional GBR membrane to promote the formation of extraosseous blood vessels during periodontal repairing.
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Affiliation(s)
- Chi Zhang
- Department of Rehabilitation, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, P.R. China
| | - Jianxiong Wang
- Department of Rehabilitation, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, P.R. China
| | - Yujie Xie
- Department of Rehabilitation, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, P.R. China
| | - Li Wang
- Department of Rehabilitation, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, P.R. China
| | - Lishi Yang
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, P.R. China
| | - Jihua Yu
- Department of Rehabilitation, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, P.R. China
| | - Akira Miyamoto
- Faculty of Rehabilitation, Department of Physical Therapy, Kobe International University, Kobe, Japan
| | - Fuhua Sun
- Department of Rehabilitation, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, P.R. China
- Correspondence address. Department of Rehabilitation, The Affiliated Hospital of Southwest Medical University, Taiping Street 25, Luzhou 646000, P.R. China. Tel.: +81-18428397607; E-mail:
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8
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Yin H, Du B, Chen Y, Song N, Li Z, Li J, Luo F, Tan H. Dual-encapsulated biodegradable 3D scaffold from liposome and waterborne polyurethane for local drug control release in breast cancer therapy. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 31:2220-2237. [PMID: 32663417 DOI: 10.1080/09205063.2020.1796230] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Compared with the traditional chemotherapy by injection, local release of drugs in the lesion area is a more efficient and less harmful treatment for solid tumors. However, the selection of appropriate drug carrier and controlled release of chemotherapy drugs are still great challenges. Herein, a kind of dual-encapsulated three-dimensional (3D) scaffold is designed for local drug release via blending the paclitaxel (PTX) loaded phospholipid liposomes with waterborne polyurethane (PU) by freeze-drying. The controlled release of paclitaxel is carried out through two simultaneous procedures. First, liposomes encapsulated in polyurethane scaffold can slowly release by water absorption and degradation of polyurethane. Then paclitaxel encapsulated in liposomes can also be released into water. Compared with the polyurethane scaffold which directly encapsulated paclitaxel, dual-encapsulated scaffold has slower initial release amount and maintain higher concentration of paclitaxel in later stage. Moreover, the protection of the phospholipid layer can prevent paclitaxel from being quickly decomposed and cleared, which could greatly improve the bioavailability and therapeutic effect of paclitaxel. Cell experiment results can be seen that dual-encapsulated scaffold not only has higher inhibition rate to the breast cancer MCF7 cells, but also has less damage to normal tissue cells. It provides a more effective platform for the local drug therapy in the treatment of tumors.[Formula: see text].
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Affiliation(s)
- Hang Yin
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China
| | - Bohong Du
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China
| | - Yue Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China
| | - Nijia Song
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan, China
| | - Zhen Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China
| | - Jiehua Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China
| | - Feng Luo
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China
| | - Hong Tan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China
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9
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Teixeira MA, Amorim MTP, Felgueiras HP. Poly(Vinyl Alcohol)-Based Nanofibrous Electrospun Scaffolds for Tissue Engineering Applications. Polymers (Basel) 2019; 12:polym12010007. [PMID: 31861485 PMCID: PMC7023576 DOI: 10.3390/polym12010007] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/21/2019] [Accepted: 12/12/2019] [Indexed: 01/27/2023] Open
Abstract
Tissue engineering (TE) holds an enormous potential to develop functional scaffolds resembling the structural organization of native tissues, to improve or replace biological functions and prevent organ transplantation. Amongst the many scaffolding techniques, electrospinning has gained widespread interest because of its outstanding features that enable the production of non-woven fibrous structures with a dimensional organization similar to the extracellular matrix. Various polymers can be electrospun in the form of three-dimensional scaffolds. However, very few are successfully processed using environmentally friendly solvents; poly(vinyl alcohol) (PVA) is one of those. PVA has been investigated for TE scaffolding production due to its excellent biocompatibility, biodegradability, chemo-thermal stability, mechanical performance and, most importantly, because of its ability to be dissolved in aqueous solutions. Here, a complete overview of the applications and recent advances in PVA-based electrospun nanofibrous scaffolds fabrication is provided. The most important achievements in bone, cartilage, skin, vascular, neural and corneal biomedicine, using PVA as a base substrate, are highlighted. Additionally, general concepts concerning the electrospinning technique, the stability of PVA when processed, and crosslinking alternatives to glutaraldehyde are as well reviewed.
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10
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Ahmadi Y, Ahmad S. Recent Progress in the Synthesis and Property Enhancement of Waterborne Polyurethane Nanocomposites: Promising and Versatile Macromolecules for Advanced Applications. POLYM REV 2019. [DOI: 10.1080/15583724.2019.1673403] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Younes Ahmadi
- Department of Chemistry, Materials Research Laboratory, Jamia Millia Islamia, New Delhi, India
| | - Sharif Ahmad
- Department of Chemistry, Materials Research Laboratory, Jamia Millia Islamia, New Delhi, India
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11
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Xie F, Zhang T, Bryant P, Kurusingal V, Colwell JM, Laycock B. Degradation and stabilization of polyurethane elastomers. Prog Polym Sci 2019. [DOI: 10.1016/j.progpolymsci.2018.12.003] [Citation(s) in RCA: 143] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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12
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Bercea M, Gradinaru LM, Mandru M, Tigau DL, Ciobanu C. Intermolecular interactions and self-assembling of polyurethane with poly(vinyl alcohol) in aqueous solutions. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Feng P, Wu P, Gao C, Yang Y, Guo W, Yang W, Shuai C. A Multimaterial Scaffold With Tunable Properties: Toward Bone Tissue Repair. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1700817. [PMID: 29984132 PMCID: PMC6033191 DOI: 10.1002/advs.201700817] [Citation(s) in RCA: 155] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 02/23/2018] [Indexed: 05/25/2023]
Abstract
Polyetheretherketone (PEEK)/β-tricalcium phosphate (β-TCP) scaffolds are expected to be able to combine the excellent mechanical strength of PEEK and the good bioactivity and biodegradability of β-TCP. While PEEK acts as a closed membrane in which β-TCP is completely wrapped after the melting/solidifying processing, the PEEK membrane degrades very little, hence the scaffolds cannot display bioactivity and biodegradability. The strategy reported here is to blend a biodegradable polymer with PEEK and β-TCP to fabricate multi-material scaffolds via selective laser sintering (SLS). The biodegradable polymer first degrades and leaves caverns on the closed membrane, and then the wrapped β-TCP is exposed to body fluid. In this study, poly(l-lactide) (PLLA) is adopted as the biodegradable polymer. The results show that large numbers of caverns form on the membrane with the degradation of PLLA, enabling direct contact between β-TCP and body fluid, and allowing for their ion-exchange. As a consequence, the scaffolds display the bioactivity, biodegradability and cytocompatibility. Moreover, bone defect repair studies reveal that new bone tissues grow from the margin towards the center of the scaffolds from the histological analysis. The bone defect region is completely connected to the host bone end after 8 weeks of implantation.
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Affiliation(s)
- Pei Feng
- State Key Laboratory of High Performance Complex ManufacturingCollege of Mechanical and Electrical EngineeringCentral South UniversityChangsha410083China
| | - Ping Wu
- College of ChemistryXiangtan UniversityXiangtan411105China
| | - Chengde Gao
- State Key Laboratory of High Performance Complex ManufacturingCollege of Mechanical and Electrical EngineeringCentral South UniversityChangsha410083China
| | - Youwen Yang
- State Key Laboratory of High Performance Complex ManufacturingCollege of Mechanical and Electrical EngineeringCentral South UniversityChangsha410083China
| | - Wang Guo
- State Key Laboratory of High Performance Complex ManufacturingCollege of Mechanical and Electrical EngineeringCentral South UniversityChangsha410083China
| | - Wenjing Yang
- State Key Laboratory of High Performance Complex ManufacturingCollege of Mechanical and Electrical EngineeringCentral South UniversityChangsha410083China
| | - Cijun Shuai
- State Key Laboratory of High Performance Complex ManufacturingCollege of Mechanical and Electrical EngineeringCentral South UniversityChangsha410083China
- School of Energy and Machinery EngineeringJiangxi University of Science and TechnologyGanzhou341000China
- State Key Laboratory of High Performance Complex ManufacturingCentral South UniversityChangsha410083China
- Key Laboratory of Organ InjuryAging and Regenerative Medicine of Hunan ProvinceChangsha410008China
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14
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Biomaterial Scaffolds in Regenerative Therapy of the Central Nervous System. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7848901. [PMID: 29805977 PMCID: PMC5899851 DOI: 10.1155/2018/7848901] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 02/18/2018] [Accepted: 02/21/2018] [Indexed: 02/08/2023]
Abstract
The central nervous system (CNS) is the most important section of the nervous system as it regulates the function of various organs. Injury to the CNS causes impairment of neurological functions in corresponding sites and further leads to long-term patient disability. CNS regeneration is difficult because of its poor response to treatment and, to date, no effective therapies have been found to rectify CNS injuries. Biomaterial scaffolds have been applied with promising results in regeneration medicine. They also show great potential in CNS regeneration for tissue repair and functional recovery. Biomaterial scaffolds are applied in CNS regeneration predominantly as hydrogels and biodegradable scaffolds. They can act as cellular supportive scaffolds to facilitate cell infiltration and proliferation. They can also be combined with cell therapy to repair CNS injury. This review discusses the categories and progression of the biomaterial scaffolds that are applied in CNS regeneration.
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15
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Shin EJ, Choi SM. Advances in Waterborne Polyurethane-Based Biomaterials for Biomedical Applications. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1077:251-283. [PMID: 30357693 DOI: 10.1007/978-981-13-0947-2_14] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Polyurethane (PU) is one of the most popular synthetic elastomers and widely employed in biomedical fields owing to the excellent biocompatibility and hemocompatibility known today. In addition, PU is simply prepared and its mechanical properties such as durability, elasticity, elastomer-like character, fatigue resistance, compliance or tolerance in the body during the healing, can be mediated by modifying the chemical structure. Furthermore, modification of bulk and surface by incorporating biomolecules such as anticoagulant s or biorecognizable groups, or hydrophilic/hydrophobic balance is possible through altering chemical groups for PU structure. Such modifications have been designed to improve the acceptance of implant. For these reason, conventional solventborne (solvent-based) PUs have established the standard for high performance systems, and extensively used in medical devices such as dressings, tubing, antibacterial membrane , catheters to total artificial heart and blood contacting materials, etc. However, waterborne polyurethane (WPU) has been developed to improve the process of dissolving PU materials using toxic organic solvents, in which water is used as a dispersing solvent. The prepared WPU materials have many advantages, briefly (1) zero or very low levels of organic solvents, namely environmental-friendly (2) non-toxic, due to absence of isocyanate residues, and (3) good applicability caused by extensive structure/property diversity as well as an environment-friendly fabrication method resulting in increasing applicability. Therefore, WPUs are being in the spotlight as biomaterials used for biomedical applications . The purpose of this review is to introduce an environmental- friendly synthesis of WPU and consider the manufacturing process and application of WPU and/or WPU based nanocomposites as the viewpoint of biomaterials.
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Affiliation(s)
- Eun Joo Shin
- Department of Organic Materials and Polymer Engineering, Dong-A University, Busan, South Korea
| | - Soon Mo Choi
- Regional Research Institute for Fiber & Fashion Materials, Yeungnam University, Gyeongsan, South Korea.
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