Toughened poly(butylene succinate)/polylactide/poly(vinyl acetate) ternary blend without sacrificing the strength

Wei Miao; Wenxi Cheng; Shanhong Xu; Renjie Wang; Jiaheng Yao; Weiqiang Song; Haowei Lin; Mengya Shang; Xuefei Zhou

doi:10.1515/ipp-2022-4219

Article

Toughened poly(butylene succinate)/polylactide/poly(vinyl acetate) ternary blend without sacrificing the strength

Wei Miao , Wenxi Cheng , Shanhong Xu , Renjie Wang , Jiaheng Yao , Weiqiang Song , Haowei Lin , Mengya Shang and Xuefei Zhou

Published/Copyright: September 9, 2022

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From the journal International Polymer Processing Volume 37 Issue 5

Abstract

In this paper, poly(butylene succinate) (PBS)/polylactide (PLA)/poly(vinyl acetate) (PVAc) ternary blends were prepared via directly blending. The content of PBS in each sample was fixed at 30 wt% and that of PVAc was different, 2, 4 or 6%. PBS/PLA (30/70, g/g) and PLA/PVAc (66/4, g/g) were also prepared for comparison. XRD and DSC results showed that PVAc was miscible with PLA, and the crystallinity (X_c) of PLA in PBS/PLA increased by adding PBS, but X_c of PBS and PLA in PBS/PLA/PVAc ternary blends reduced by adding PVAc. SEM images showed that PBS was dispersed as droplets in each blend The addition of PVAc improved the compatibility between PBS and PLA, and the fracture surfaces of the ternary blends became rougher than that of PBS/PLA. The tensile and impact tests results showed that PVAc could enhance PLA and the highly toughened PBS/PLA blend. Finally, PBS/PLA/PVAc blend with 2% of PVAc was highly toughened without sacrificing its strength. Its strength was the same as that of PBS/PLA, while the elongation at break and impact strength of the former were 2.8 and 2.5 times those of the latter.

Keywords: poly(butylene succinate); poly(vinyl acetate); polylactide; ternary blend

Corresponding author: Wenxi Cheng, School of Materials Science and Engineering, Henan University of Technology, Zhengzhou 450001, P.R. China, E-mail: wenxi_cheng@haut.edu.cn

Funding source: Natural Science Project of Henan Science and Technology Department

Award Identifier / Grant number: 172102210228

Funding source: National Natural Science Foundation of China

Award Identifier / Grant number: 32000388

Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This work was supported by the Natural Science Project of Henan Science and Technology Department [172102210228] and the National Natural Science Foundation of China [32000388].
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
Data availability: The raw data required to reproduce these findings are available upon request.

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Received: 2022-04-03

Accepted: 2022-06-12

Published Online: 2022-09-09

Published in Print: 2022-11-25

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https://doi.org/10.1515/ipp-2022-4219

Keywords for this article

poly(butylene succinate); poly(vinyl acetate); polylactide; ternary blend