Thermal properties of poly(L-lactide)/calcium carbonate nanocomposites

被引：22

作者：

Andricic, Branka ^{[1
]}

Kovacic, Tonka ^{[1
]}

Perinovic, Sanja ^{[1
]}

Grgic, Adela ^{[1
]}

机构：

[1] Fac Chem & Technol, Dept Organ Technol, Split 21000, Croatia

来源：

MACROMOLECULAR SYMPOSIA | 2008年 / 263卷

关键词：

activation energy; DSC; nanocomposites; poly(L-lactide); TGA;

D O I：

10.1002/masy.200850312

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Thermal properties of nanocomposites prepared of poly(L-lactide) (PLLA) and CaCO3 applying differential scanning (DSC) calorimetry and thermogravimetry (TG) were studied. Nanocomposites were prepared by extrusion process at 170 degrees C. DSC measurements show that CaCO3 has no influence on glass transition and melting point of PLLA but lowers its cold crystallization temperature. There is no difference in glass transition temperature of PLLA before and after extrusion. High temperature thermal stability of the PLLA in the composites is poorer than neat PLLA. Kinetic parameters also indicate greater reactivity of the system upon CaCO3 addition.

引用

页码：96 / 101

页数：6

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