Post-chemical grafting poly(methyl methacrylate) to commercially renewable elastomer as effective modifiers for polylactide blends

被引：11

作者：

Ding, Yingli ^{[1
]}

Chen, Xiangjian ^{[2
]}

Huang, Dong ^{[2
]}

Fan, Baomin ^{[3
]}

Pan, Li ^{[2
]}

Zhang, Kunyu ^{[1
]}

Li, Yuesheng ^{[2
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Peiyang Pk Campus 135 Yaguan Rd,Haihe Educ Pk, Tianjin 300350, Peoples R China

[2] Tianjin Univ, Sch Mat Sci & Engn, Tianjin Key Lab Composite & Funct Mat, Peiyang Pk Campus 135 Yaguan Rd,Haihe Educ Pk, Tianjin 300350, Peoples R China

[3] Beijing Technol & Business Univ, Beijing Key Lab Qual Evaluat Technol Hyg & Safety, Beijing 100048, Peoples R China

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2021年 / 181卷 / 181期

关键词：

Polylactide; Poly(methyl methacrylate); Graft copolymer; Blending; Toughening; HIGHLY-TOUGHENED POLYLACTIDE; IN-SITU COMPATIBILIZATION; CO-CONTINUOUS MORPHOLOGY; POLYMER BLENDS; POLY(LACTIC ACID); DYNAMIC VULCANIZATION; MECHANICAL-PROPERTIES; ENTANGLEMENT NETWORK; PHASE MORPHOLOGY; CHAIN STRUCTURE;

D O I：

10.1016/j.ijbiomac.2021.03.139

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A novel poly(epichlorohydrin-co-ethylene oxide)-g-poly( methyl methacrylate) copolymer (ECO-g-PMMA) was successfully synthesized from a commercially renewable elastomer via the AMP method. The graft copolymer was investigated as a toughening agent and compatibilizer for polylactide (PIA) and PLA/ECO blends, respectively. Binary blending PIA with the copolymers (5-15 wt%) significantly improved the strain at break of PLA above 200% without a great strength loss. More importantly, the ternary PLA/ECO/ECO-g-PMMA copolymer blends exhibited a remarkably high impact strength of 96.9 kJ/m(2) with non-broken behaviors. An interesting phase structure transformation from a typical sea-island structure to a unique quasi-continuous network structure was observed with varying the content of ECO-g-PMMA from 0 to 15 wt% in the ternary blends. The native toughening mechanism analysis indicated the synergistic toughening effect of the good interfacial adhesion and unique quasi-continuous morphology endowed the ternary blends with excellent mechanical performance. (C) 2021 Published by Elsevier B.V.

引用

页码：718 / 733

页数：16

共 76 条

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