Effect of PMMA/Silica Hybrid Particles on Interfacial Adhesion and Crystallization Properties of Poly(lactic acid)/Block Acrylic Elastomer Composites

被引：7

作者：

Kim, Gi Hong ^{[1
]}

Hwang, Sung Wook ^{[2
]}

Jung, Bich Nam ^{[1
,3
]}

Kang, DongHo ^{[1
]}

Shim, Jin Kie ^{[1
]}

Seo, Kwan Ho ^{[4
]}

机构：

[1] Korea Inst Ind Technol, Korea Packaging Ctr, Bucheon 14449, South Korea

[2] Keimyung Univ, Dept Chem Engn, Daegu 42601, South Korea

[3] Korea Univ, Dept Chem & Biol Engn, Seoul 02841, South Korea

[4] Kyungpook Natl Univ, Dept Polymer Sci & Engn, Daegu 41566, South Korea

来源：

POLYMERS | 2020年 / 12卷 / 10期

关键词：

poly(lactic acid); PMMA; silica hybrid particles; block acrylic elastomer; L-LACTIC ACID; PHASE-SEPARATION; SILICATE NANOCOMPOSITES; VISCOELASTIC BEHAVIOR; ENTANGLEMENT NETWORK; MOLECULAR-WEIGHT; POLYMER BLENDS; MELT RHEOLOGY; KINETICS; POLYLACTIDE;

D O I：

10.3390/polym12102231

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(lactic acid) (PLA) is a relatively brittle polymer, and its low melt strength, ductility, and thermal stability limit its use in various industrial applications. This study aimed to investigate the effect of poly(methyl methacrylate) (PMMA) and PMMA/silica hybrid particles on the mechanical properties, interfacial adhesion, and crystallization behavior of PLA/block acrylic elastomer. PLA/block acrylic elastomer blends exhibit improved flexibility; however, phase separation occurs between PLA and block acrylic elastomer domains. Valid time-temperature superposition (TTS) measurements of viscoelastic behavior were obtained and exhibited interfacial adhesion with the addition of PMMA or PMMA/silica in PLA/block acrylic elastomer blends. In particular, the phase separation temperature was increased by the incorporation of PMMA/silica hybrid particles, which suggests a potential role for these particles in improving the phase stability. In addition, PMMA inhibits crystallization, while PMMA/silica acts as a nucleating agent, thus increasing the crystallization rate and crystallinity degree.

引用

页码：1 / 17

页数：17

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