Crystallization and melting behavior of PP/CaCO3 nanocomposites during thermo-oxidative degradation

被引：23

作者：

Wang, Yuhai ^{[1
]}

Shen, Hao ^{[1
]}

Li, Gu ^{[1
]}

Mai, Kancheng ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Chem & Chem Engn, Minist Educ,Mat Sci Inst, Key Lab Polymer Composites & Funct Mat, Guangzhou 510275, Guangdong, Peoples R China

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2010年 / 100卷 / 03期

关键词：

Crystallization; Nanocomposites; Polypropylene; Thermo-oxidative stability; METALLOCENE ISOTACTIC POLYPROPYLENE; THERMAL-STABILITY; POLYPROPYLENE/MONTMORILLONITE NANOCOMPOSITES; PHOTODEGRADED POLYPROPYLENE; MECHANICAL-PROPERTIES; FILLED POLYPROPYLENE; COMPOSITES; PHOTOOXIDATION; NANOPARTICLES; MORPHOLOGY;

D O I：

10.1007/s10973-009-0267-1

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The crystallization and melting behavior of PP/CaCO3 nanocomposites during thermo-oxidative degradation process were studied using differential scanning calorimetry and X-ray diffraction. The results indicated that addition of nano-CaCO3 and compatibilizer significantly reduced the thermo-oxidative stability of PP. Before degradation, thermal aging resulted in an increase in the melting temperature and crystallinity of PP due to the annealing crystallization. Thermo-oxidative degradation decreased the melting temperature and increased melting range, and caused an increase in crystallinity of PP due to the chemi-crystallization. The investigation also indicated that the influence of degradation on the small crystals were much more significant than that on the large ones.

引用

页码：999 / 1008

页数：10

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