苯乙烯-丙烯酸甲酯共聚物对聚乳酸/SBS共混物相容性的影响

doi:10.11896/cldb.18100099

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Abstract Taking random copolymer poly(styrene-co-methyl acrylate) (PSMA) (nSt∶nMA=75∶25) as compatibilizer, we conducted the melt blending of the polylactide (PLA) and the triblock copolymer styrene-butadiene-styrene (SBS) on a twin-screw extruder, and explored the impact of PSMA content on the compatibility of PLA/SBS (m_PLA∶m_SBS=90∶10) blends. Furthermore, the scanning electron microscope, universal tensile testing machine, differential scanning calorimeter and rotary rheometer were employed to characterize the microstructure, mechanical properties, thermal properties and rheological properties of PLA/SBS blends. It could be observed by SEM that adding 1wt% PSMA enabled uniform dispersion of SBS in PLA/SBS blends and enhanced the interfacial adhesion of PLA/SBS blends as well. Meanwhile, the elongation and impact strength of PLA/SBS blends with 1wt% PSMA were 7.1 and 2.3 times of those of pure PLA, respectively. Besides, DSC and rheological results indicated an improved compatibility of PLA and SBS by the addition of PSMA.

Key words： polylactide (PLA) styrene-butadiene-styrene (SBS) triblock copolymer poly(styrene-co-methyl acrylate) (PSMA) compatibility

Published: 16 September 2019

CLC number:

TQ323.4

Fund:This work was financially supported by the National Natural Science Foundation of China (51173039).

About author:: Bocheng Wang is a postgraduate student in School of Materials and Chemical Engineering at Hubei University of Technology since 2017. His research interests concern biodegradable polymer blends and nanocomposites.
Xinghou Gong is a professor in School of Materials and Chemical Engineering at Hubei University of Technology (China). He received his Ph.D. degree in material science from Huazhong University of Technology in 2006. In 2016, he visited the University of Akron, USA. His research interests are bio-functional polymers and composites. He has published more than thirty peer-reviewed journal articles.

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	WANG Bocheng
	LIU Wei
	TU Zheng
	WU Chonggang
	SHI Biao
	HU Tao
	GONG Xinghou

Cite this article:

WANG Bocheng,LIU Wei,TU Zheng, et al. Impact of Poly(Styrene-co-Methyl Acrylate) on the Compatibility of Polylactide/SBS Blends[J]. Materials Reports, 2019, 33(22): 3833-3836.

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http://www.mater-rep.com/EN/10.11896/cldb.18100099 OR http://www.mater-rep.com/EN/Y2019/V33/I22/3833

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