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Blends of rABS and SEBS: Influence of In-Situ Compatibilization on the Mechanical Properties

In this study, the in-situ compatibilization reaction between recycled acrylonitrile–butadiene–styrene copolymer (rABS) and functional styrene–ethylene–butylene–styrene block maleic anhydride (SEBS-g-MAH) was confirmed, which contributed to the toughening phenomenon of rABS, especially the notched i...

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Detalles Bibliográficos
Autores principales: Zhan, Zhiming, He, Hezhi, Zhu, Zhiwen, Xue, Bin, Wang, Guozhen, Chen, Ming, Xiong, Chengtian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6695779/
https://www.ncbi.nlm.nih.gov/pubmed/31344891
http://dx.doi.org/10.3390/ma12152352
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author Zhan, Zhiming
He, Hezhi
Zhu, Zhiwen
Xue, Bin
Wang, Guozhen
Chen, Ming
Xiong, Chengtian
author_facet Zhan, Zhiming
He, Hezhi
Zhu, Zhiwen
Xue, Bin
Wang, Guozhen
Chen, Ming
Xiong, Chengtian
author_sort Zhan, Zhiming
collection PubMed
description In this study, the in-situ compatibilization reaction between recycled acrylonitrile–butadiene–styrene copolymer (rABS) and functional styrene–ethylene–butylene–styrene block maleic anhydride (SEBS-g-MAH) was confirmed, which contributed to the toughening phenomenon of rABS, especially the notched impact strength. As mechanical test that manifested, the rABS/SEBS-g-MAH blends are stronger and more ductile than the rABS/SEBS blends. Prominently, the former has great advantage over the latter in terms of improving the impact performance. Scanning electron microscope (SEM) images showed that the compatible segments that were generated by reaction not only improve the interface adhesion of rABS/SEBS-g-MAH blends but also promote the evolution of co-continuous structures, which can be evidently observed after etching. Furthermore, the SEM micrographs of tensile fracture surfaces indicated that the formation of the co-continuous phase and the improvement of interface adhesion are the most profound reasons for the excellent tensile properties of the rABS/SEBS-g-MAH blends. The impact fracture surface revealed that two-phase interface affects crack propagation and shear yielding absorbs more impact energy than simple interface debonding does at higher deformation rates. Meanwhile, rheological analysis demonstrated that the complex viscosity of the rABS/SEBS-g-MAH (80/20 wt%) blend with a co-continuous structure exhibits a maximum positive deviation at low frequencies from the theoretical value calculated using the rule of logarithmic sum, which indicated a connection between co-continuous structure and complex viscosity. In addition, the storage modulus vs. loss modulus curves of the blends revealed that the viscoelastic behavior of rABS/SEBS-g-MAH blends is very similar to that of rABS.
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spelling pubmed-66957792019-09-05 Blends of rABS and SEBS: Influence of In-Situ Compatibilization on the Mechanical Properties Zhan, Zhiming He, Hezhi Zhu, Zhiwen Xue, Bin Wang, Guozhen Chen, Ming Xiong, Chengtian Materials (Basel) Article In this study, the in-situ compatibilization reaction between recycled acrylonitrile–butadiene–styrene copolymer (rABS) and functional styrene–ethylene–butylene–styrene block maleic anhydride (SEBS-g-MAH) was confirmed, which contributed to the toughening phenomenon of rABS, especially the notched impact strength. As mechanical test that manifested, the rABS/SEBS-g-MAH blends are stronger and more ductile than the rABS/SEBS blends. Prominently, the former has great advantage over the latter in terms of improving the impact performance. Scanning electron microscope (SEM) images showed that the compatible segments that were generated by reaction not only improve the interface adhesion of rABS/SEBS-g-MAH blends but also promote the evolution of co-continuous structures, which can be evidently observed after etching. Furthermore, the SEM micrographs of tensile fracture surfaces indicated that the formation of the co-continuous phase and the improvement of interface adhesion are the most profound reasons for the excellent tensile properties of the rABS/SEBS-g-MAH blends. The impact fracture surface revealed that two-phase interface affects crack propagation and shear yielding absorbs more impact energy than simple interface debonding does at higher deformation rates. Meanwhile, rheological analysis demonstrated that the complex viscosity of the rABS/SEBS-g-MAH (80/20 wt%) blend with a co-continuous structure exhibits a maximum positive deviation at low frequencies from the theoretical value calculated using the rule of logarithmic sum, which indicated a connection between co-continuous structure and complex viscosity. In addition, the storage modulus vs. loss modulus curves of the blends revealed that the viscoelastic behavior of rABS/SEBS-g-MAH blends is very similar to that of rABS. MDPI 2019-07-24 /pmc/articles/PMC6695779/ /pubmed/31344891 http://dx.doi.org/10.3390/ma12152352 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
Zhan, Zhiming
He, Hezhi
Zhu, Zhiwen
Xue, Bin
Wang, Guozhen
Chen, Ming
Xiong, Chengtian
Blends of rABS and SEBS: Influence of In-Situ Compatibilization on the Mechanical Properties
title Blends of rABS and SEBS: Influence of In-Situ Compatibilization on the Mechanical Properties
title_full Blends of rABS and SEBS: Influence of In-Situ Compatibilization on the Mechanical Properties
title_fullStr Blends of rABS and SEBS: Influence of In-Situ Compatibilization on the Mechanical Properties
title_full_unstemmed Blends of rABS and SEBS: Influence of In-Situ Compatibilization on the Mechanical Properties
title_short Blends of rABS and SEBS: Influence of In-Situ Compatibilization on the Mechanical Properties
title_sort blends of rabs and sebs: influence of in-situ compatibilization on the mechanical properties
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6695779/
https://www.ncbi.nlm.nih.gov/pubmed/31344891
http://dx.doi.org/10.3390/ma12152352
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