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Enhancing the Mechanical and Thermal Properties of Epoxy Resin via Blending with Thermoplastic Polysulfone

Efficient enhancement of the toughness of epoxy resins has been a bottleneck for expanding their suitability for advanced applications. Here, polysulfone (PSF) was adopted to toughen and modify the epoxy. The influences of PSF on the mechanical and thermal properties of the epoxy resin were systemat...

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Autores principales: Sun, Zeyu, Xu, Lei, Chen, Zhengguo, Wang, Yuhao, Tusiime, Rogers, Cheng, Chao, Zhou, Shuai, Liu, Yong, Yu, Muhuo, Zhang, Hui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473582/
https://www.ncbi.nlm.nih.gov/pubmed/30960445
http://dx.doi.org/10.3390/polym11030461
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author Sun, Zeyu
Xu, Lei
Chen, Zhengguo
Wang, Yuhao
Tusiime, Rogers
Cheng, Chao
Zhou, Shuai
Liu, Yong
Yu, Muhuo
Zhang, Hui
author_facet Sun, Zeyu
Xu, Lei
Chen, Zhengguo
Wang, Yuhao
Tusiime, Rogers
Cheng, Chao
Zhou, Shuai
Liu, Yong
Yu, Muhuo
Zhang, Hui
author_sort Sun, Zeyu
collection PubMed
description Efficient enhancement of the toughness of epoxy resins has been a bottleneck for expanding their suitability for advanced applications. Here, polysulfone (PSF) was adopted to toughen and modify the epoxy. The influences of PSF on the mechanical and thermal properties of the epoxy resin were systematically studied by optical microscopy, Fourier transform infrared spectrometer (FT-IR), differential scanning calorimetry (DSC), thermogravimetric analyzer (TG), dynamic mechanical thermal analyzer (DMA), mechanical tests and scanning electron microscope (SEM). The dissolution experimental results showed that PSF presents a good compatibility with the epoxy resin and could be well dissolved under controlled conditions. The introduction of PSF was found to promote the curing reaction of the epoxy resin without participating in the curing reaction and changing the curing mechanism as revealed by the FT-IR and DSC studies. The mechanical properties of PSF/epoxy resin blends showed that the fracture toughness and impact strength were significantly improved, which could be attributed to the bicontinuous phase structure of PSF/epoxy blends. Representative phase structures resulted from the reaction induced phase separation process were clearly observed in the PSF/epoxy blends during the curing process of epoxy resin, which presented dispersed particles, bicontinuous and phase inverted structures with the increase of the PSF content. Our work further confirmed that the thermal stability of the PSF/epoxy blends was slightly increased compared to that of the pure epoxy resin, mainly due to the good heat resistance of the PSF component.
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spelling pubmed-64735822019-05-03 Enhancing the Mechanical and Thermal Properties of Epoxy Resin via Blending with Thermoplastic Polysulfone Sun, Zeyu Xu, Lei Chen, Zhengguo Wang, Yuhao Tusiime, Rogers Cheng, Chao Zhou, Shuai Liu, Yong Yu, Muhuo Zhang, Hui Polymers (Basel) Article Efficient enhancement of the toughness of epoxy resins has been a bottleneck for expanding their suitability for advanced applications. Here, polysulfone (PSF) was adopted to toughen and modify the epoxy. The influences of PSF on the mechanical and thermal properties of the epoxy resin were systematically studied by optical microscopy, Fourier transform infrared spectrometer (FT-IR), differential scanning calorimetry (DSC), thermogravimetric analyzer (TG), dynamic mechanical thermal analyzer (DMA), mechanical tests and scanning electron microscope (SEM). The dissolution experimental results showed that PSF presents a good compatibility with the epoxy resin and could be well dissolved under controlled conditions. The introduction of PSF was found to promote the curing reaction of the epoxy resin without participating in the curing reaction and changing the curing mechanism as revealed by the FT-IR and DSC studies. The mechanical properties of PSF/epoxy resin blends showed that the fracture toughness and impact strength were significantly improved, which could be attributed to the bicontinuous phase structure of PSF/epoxy blends. Representative phase structures resulted from the reaction induced phase separation process were clearly observed in the PSF/epoxy blends during the curing process of epoxy resin, which presented dispersed particles, bicontinuous and phase inverted structures with the increase of the PSF content. Our work further confirmed that the thermal stability of the PSF/epoxy blends was slightly increased compared to that of the pure epoxy resin, mainly due to the good heat resistance of the PSF component. MDPI 2019-03-11 /pmc/articles/PMC6473582/ /pubmed/30960445 http://dx.doi.org/10.3390/polym11030461 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sun, Zeyu
Xu, Lei
Chen, Zhengguo
Wang, Yuhao
Tusiime, Rogers
Cheng, Chao
Zhou, Shuai
Liu, Yong
Yu, Muhuo
Zhang, Hui
Enhancing the Mechanical and Thermal Properties of Epoxy Resin via Blending with Thermoplastic Polysulfone
title Enhancing the Mechanical and Thermal Properties of Epoxy Resin via Blending with Thermoplastic Polysulfone
title_full Enhancing the Mechanical and Thermal Properties of Epoxy Resin via Blending with Thermoplastic Polysulfone
title_fullStr Enhancing the Mechanical and Thermal Properties of Epoxy Resin via Blending with Thermoplastic Polysulfone
title_full_unstemmed Enhancing the Mechanical and Thermal Properties of Epoxy Resin via Blending with Thermoplastic Polysulfone
title_short Enhancing the Mechanical and Thermal Properties of Epoxy Resin via Blending with Thermoplastic Polysulfone
title_sort enhancing the mechanical and thermal properties of epoxy resin via blending with thermoplastic polysulfone
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473582/
https://www.ncbi.nlm.nih.gov/pubmed/30960445
http://dx.doi.org/10.3390/polym11030461
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