Structure and Performance of Polyamide 6/Halloysite Nanotubes Nanocomposites

被引：93

作者：

Guo, Baochun ^{[1
]}

Zou, Quanliang ^{[1
]}

Lei, Yanda ^{[1
]}

Jia, Demin ^{[1
]}

机构：

[1] S China Univ Technol, Dept Polymer Mat & Engn, Guangzhou 510640, Peoples R China

来源：

POLYMER JOURNAL | 2009年 / 41卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Polyamide; Halloysite; Nanocomposite; Mechanical Property; Crystallization; WALLED CARBON NANOTUBES; NYLON 6-CLAY HYBRID; MECHANICAL-PROPERTIES; CRYSTALLIZATION BEHAVIOR; ACTIVATION-ENERGY; CRYSTAL STRUCTURE; SOLID-STATE; HALLOYSITE; COMPOSITES; MORPHOLOGY;

D O I：

10.1295/polymj.PJ2009110

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];

摘要：

Halloysite nanotubes (HNTs) are chemically modified via silylation with 3-(trimethoxysilyl)propyl methacrylate. The modified HNTs (m-HNTs) are characterized by diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy, solid state (13)C NMR spectroscopy, thermogravimetric analysis (TGA) and extraction experiment. It is showed that the silane has been effectively grafted onto HNTs surface and renders the hydrophobicity to m-HNTs. The nanocomposites consisting of polyamide 6 (PA6) and m-HNTs show significantly improved mechanical properties and heat distortion temperature, which are attributed to the covalent interfacial bonding and the excellent dispersion state of m-HNTs. M-HNTs are found to disperse individually into PA6 matrix. The nucleation effect by m-HNTs is verified by the lowered fold-surface free energy of PA6/HNTs nanocomposites and the observation of polarized optical microscopy (POM). Both high cooling rate and high m-HNTs loading are beneficial to the formation of gamma-crystals of PA6. The polymorphism could be correlated to the heterogeneous nucleation effects of m-HNTs and the interfacial interactions between m-HNTs and PA6 matrix.

引用

页码：835 / 842

页数：8

共 35 条

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