Effects of acid- and diamine-modified MWNTs on the mechanical properties and crystallization behavior of polyamide 6

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	Effects of acid- and diamine-modified MWNTs on the mechanical properties and crystallization behavior of polyamide 6
	H. Meng; G. X. Sui; P. F. Fang; R. Yang
	2008
发表期刊	Polymer
ISSN	0032-3861
卷号	49 期号:2 页码:610-620
摘要	The acid- and diamine-modified multi-walled carbon nanotubes were characterized by XPS, apparent density test and SEM. Their effects on the mechanical properties and crystallization behavior of polyamide 6 (PA6) were comparatively investigated via SEM, DMA, tensile test and DSC. It was revealed that acid treatment could effectively induce polar oxygen-containing groups on the surface of MWNTs, which was beneficial for MWNTs to combine with polar PA6 matrix. However, the interactions such as the hydrogen bonds among the acid-modified MWNTs caused a compact stacking morphology, resulting in a worse dispersion in PA6 matrix. Further diamine modification on the acid-modified MWNTs could graft diamine molecules onto the surface of MWNTs, which weakened the interactions among the MWNTs and thus resulted in a less compact stacking morphology compared with acid-modified MWNTs. Therefore, a better dispersion and a stronger interfacial adhesion of MWNTs in PA6 matrix could be obtained with diamine-modified MWNTs. The storage modulus, glass transition temperature, yield strength, Young's modulus and crystallization temperature of PA6 were found to be improved significantly by the incorporation of diamine-modified MWNTs. (c) 2007 Elsevier Ltd. All rights reserved.
部门归属	[meng, h.; sui, g. x.; yang, r.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [fang, p. f.] wuhan univ, dept phys, wuhan 430072, peoples r china.;sui, gx (reprint author), chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;gxsui@imr.ac.cn fangpf@whu.edu.cn
关键词	Carbon Nanotubes Chemical Modification Polyamide 6 Walled Carbon Nanotubes In-situ Polymerization Nonisothermal Crystallization Physical-properties Composites Nanocomposites Blends Fabrication Morphology Strength
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WOS记录号	WOS:000253266900029
引用统计	被引频次：181[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33032
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Meng,G. X. Sui,P. F. Fang,et al. Effects of acid- and diamine-modified MWNTs on the mechanical properties and crystallization behavior of polyamide 6[J]. Polymer,2008,49(2):610-620.
APA	H. Meng,G. X. Sui,P. F. Fang,&R. Yang.(2008).Effects of acid- and diamine-modified MWNTs on the mechanical properties and crystallization behavior of polyamide 6.Polymer,49(2),610-620.
MLA	H. Meng,et al."Effects of acid- and diamine-modified MWNTs on the mechanical properties and crystallization behavior of polyamide 6".Polymer 49.2(2008):610-620.