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Effect of Styrene-Maleic Anhydride Copolymer on Properties of PBST/PLA Blends.

Authors :
Zhang, Qing
Gao, Yongguang
Luo, Baojing
Cui, Yan
Shu, Shili
Chen, Wei
Wang, Lei
Source :
Polymers (20734360); Feb2023, Vol. 15 Issue 4, p952, 16p
Publication Year :
2023

Abstract

Poly(butylene succinate-butylene terephthalate) (PBST) and polylactic acid (PLA) are both biodegradable polymeric materials. PBST has good ductility but low strength, while PLA exhibits high strength but poor toughness. Based on the complementary mechanical properties of the two polymers, PBST/PLA blends were prepared by melt blending in the mixing chamber of a torque rheometer using styrene-maleic anhydride copolymer (PSMA) as a compatibilizer. The effects of different contents of PSMA on the crystalline properties, thermal properties, mechanical properties, rheological behavior, and morphology of PBST/PLA blends were investigated. The results showed that the addition of PSMA improved the compatibility between PBST and PLA. When the amount of PSMA is 3–4 wt%, the comprehensive mechanical properties of the blends are optimal, and the tensile strength was increased by 61.7% compared with the binary blend without PSMA. Additionally, rheological tests illustrated that the blends exhibited a typical shear-thinning behavior and belonged to pseudoplastic non-Newtonian fluids. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20734360
Volume :
15
Issue :
4
Database :
Complementary Index
Journal :
Polymers (20734360)
Publication Type :
Academic Journal
Accession number :
162159625
Full Text :
https://doi.org/10.3390/polym15040952