Synthesis of unsaturated aliphatic polyester-based copolymer: effect on the ductility of PLA blend and crosslink

被引：9

作者：

Chalermpanaphan, Vachiravit ^{[1
]}

Choochottiros, Chantiga ^{[1
]}

机构：

[1] Kasetsart Univ, Fac Sci, Dept Mat Sci, Bangkok 10900, Thailand

来源：

POLYMER BULLETIN | 2022年 / 79卷 / 04期

关键词：

Poly(butene succinate); Copolymer; PLA; Polylactide; Ductility; Crosslink;

D O I：

10.1007/s00289-021-03596-y

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The polymers/copolymers blending has been investigated to improve the ductility of PLA. The rubbery or flexible polymers are keys to success in enhancing the ductility of PLA blends. However, the interfacial interaction between copolymers and PLA needs to be concerned. Here, we synthesized the copolymer of poly(butene succinate) (PBTS) and polylactide (PBTS-PLA), which consisted of C=C on the main chain. The PBTS-PLA aimed to increase the ductility of the PLA blend and the interfacial interaction between PBTS-PLA and PLA by thermal crosslink. The elongation at break of the blend films increased when added PBTS-PLA at 1 phr, and it was two times higher than neat PLA. The tensile strength and Young's modulus decreased as PBTS-PLA was increased. The crosslinked films showed the highest elongation at break when added PBTS-PLA at 5 phr, and it has 2.4 times higher than neat PLA. These might have been due to the synergistic effect of ductility and crosslink reaction. The crosslink reaction improved interfacial adhesion between PBTS-PLA and PLA as PBTS-PLA particles on the film surface were diminished.

引用

页码：2003 / 2017

页数：15

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