在不牺牲强度的情况下增韧聚丁二酸丁二醇酯/聚乳酸/聚乙酸乙烯酯三元共混物

IF 1.1 4区工程技术 Q4 ENGINEERING, CHEMICAL

International Polymer Processing Pub Date : 2022-09-09 DOI:10.1515/ipp-2022-4219

Wei Miao, Wenxi Cheng, Shanhong Xu, Renjie Wang, Jiaheng Yao, Weiqiang Song, Hao-Hsing Lin, Mengya Shang, Xuefei Zhou

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引用次数: 1

摘要

摘要本文采用直接共混的方法制备了聚丁二酸丁二醇酯（PBS）/聚乳酸（PLA）/醋酸乙烯酯（PVAc）三元共混物。每个样品中PBS的含量固定在30wt%，PVAc的含量不同，为2%、4%或6%。还制备PBS/PLA（30/70，g/g）和PLA/PVAc（66/4，/g）用于比较。XRD和DSC结果表明，PVAc与PLA混溶，加入PBS后，PLA在PBS/PLA中的结晶度（XC）增加，但加入PVAc后，PBS/PLA/PVAc三元共混物中PBS和PLA的XC降低。SEM图像显示，PBS以液滴的形式分散在每种共混物中。PVAc的加入改善了PBS和PLA之间的相容性，并且三元共混物的断裂表面变得比PBS/PLA更粗糙。拉伸和冲击试验结果表明，PVAc可以增强PLA和高增韧PBS/PLA共混物。最后，含有2%PVAc的PBS/PLA/PVAc共混物在不牺牲其强度的情况下得到了高度增韧。其强度与PBS/PLA相同，而前者的断裂伸长率和冲击强度分别是后者的2.8和2.5倍。

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

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.

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来源期刊

International Polymer Processing 工程技术-高分子科学

CiteScore

2.20

自引率

7.70%

发文量

审稿时长

6 months

期刊介绍： International Polymer Processing offers original research contributions, invited review papers and recent technological developments in processing thermoplastics, thermosets, elastomers and fibers as well as polymer reaction engineering. For more than 25 years International Polymer Processing, the journal of the Polymer Processing Society, provides strictly peer-reviewed, high-quality articles and rapid communications from the leading experts around the world.