Structure and properties for biomass-based polyester blends of PLA and PBS

被引：486

作者：

Yokohara, Tadashi ^{[1
]}

Yamaguchi, Masayuki ^{[1
]}

机构：

[1] Japan Adv Inst Sci & Technol, Sch Mat Sci, Nomi, Ishikawa 9231292, Japan

来源：

EUROPEAN POLYMER JOURNAL | 2008年 / 44卷 / 03期

关键词：

polylactide; polymer blend; crystallization; rheological properties; interfacial tension;

D O I：

10.1016/j.eurpolymj.2008.01.008

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理]; 080501 [材料物理与化学]; 081704 [应用化学];

摘要：

Structure and properties are studied for binary blends cornposed of poly(lactic acid) (PLA) and poly(butylene succinate) (PBS). The rheological measurements in the molten state reveal that the entanglement molecular weight of PLA is lower than that of PBS. Further, the interfacial tension of the immiscible blend system is evaluated employing a rheological emulsion model and found to be 3.5 [mN/m]. Moreover, thermal analysis directly detects that addition of PBS enhances the crystallization of PLA even though PBS is in a molten state. Further, the cold-crystallization for quenched blends occurs at lower temperature than that for a quenched PLA. This would be attributed to the nucleating ability of PBS, leading to generation of PLA crystallites during the quench operation. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：677 / 685

页数：9

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