Nylon based nanocomposites: Influence of calcium carbonate nanoparticles on the thermal stability

被引：14
作者：
Avella, M
Carfagna, C
Cerruti, P
Errico, ME
Gentile, G
机构：
[1] CNR, ICTP, I-80078 Naples, Italy
[2] Univ Naples Federico II, Dipartimento Ingn Mat & Prod, I-80125 Naples, Italy
来源：
MACROMOLECULAR SYMPOSIA | 2006年 / 234卷
关键词：
activation energy; nanocomposites; nylon; thermal stability; thermogravimetric analysis (TG);
D O I：
10.1002/masy.200650221
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In this paper thermal and thermo-oxidative stability of nylon 6 based nanocomposites containing up to 5% by weight of fatty acid coated calcium carbonate (CaCO3) nanoparticles is studied. Thermal stability of compression-moulded samples was evaluated by thermogravimetric analysis (TG) under air and nitrogen atmosphere. Kinetic analysis of TG data was performed by using the Flynn-Wall-ozawa method. Results show that the presence of coated nanoparticles adversely affects the thermal and thermo-oxidative stability of nylon 6. Kinetic analysis shows that a complex, multi-step decomposition process occurs. Moreover, the presence of nanoparticles do not affect the rate limiting step of nylon 6 decomposition in air, while under nitrogen atmosphere the decomposition process occurs through a diffusion-driven regime in presence of high amounts of CaCO3.
引用
收藏
页码：163 / 169
页数：7
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