Morphology evolutions of organically modified montmorillonite/polyamide 12 nanocomposites

doi:10.1016/j.polymer.2007.03.009

CORC > 化学研究所 > 中国科学院化学研究所

	Morphology evolutions of organically modified montmorillonite/polyamide 12 nanocomposites
	Meng, Xiaoyu ; Wang, Zhe ; Zhao, Zhongfu ; Du, Xiaohua ; Bi, Wuguo ; Tang, Tao
刊名	POLYMER
	2007-04-24
卷号	48 期号:9 页码:2508-2519
关键词	Exfoliation Montmorillonite Nanocomposites
ISSN号	0032-3861
DOI	10.1016/j.polymer.2007.03.009
英文摘要	Organically modified montmorillonites (OMMTs) by octadecylammonium chloride with two adsorption levels were dispersed in polyamide 12 (PA12) matrices with two molecular weights for different melt mixing times in order to investigate morphology evolutions and factors influencing fabrication of PA12 nanocomposites. Different adsorption levels of the modifier in the OMMTs provide different environments for diffusion of polymer chains and different attractions between MMT layers. Wide-angle X-ray diffraction (WAXD), transmission electron microscope (TEM) and gas permeability were used to characterize morphologies of the nanocomposites. Both OMMTs can be exfoliated in the PA12 matrix with higher molecular weight, but only OMMT with lower adsorption level can be exfoliated in the PA12 matrix with lower molecular weight. It was attributed to the differences in the levels of shear stress and molecular diffusion in the nanocomposites. The exfoliation of OMMT platelets results from a combination of molecular diffusion and shear. After intercalation of PA12 into interlayer of OMMT in the initial period of mixing, further dispersion of OMMTs in PA12 matrices is controlled by a slippage process of MMT layers during fabricating PA12 nanocomposites with exfoliated structure. (c) 2007 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000246329300009
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/62545]
专题	中国科学院化学研究所
通讯作者	Tang, Tao
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Meng, Xiaoyu,Wang, Zhe,Zhao, Zhongfu,et al. Morphology evolutions of organically modified montmorillonite/polyamide 12 nanocomposites[J]. POLYMER,2007,48(9):2508-2519.
APA	Meng, Xiaoyu,Wang, Zhe,Zhao, Zhongfu,Du, Xiaohua,Bi, Wuguo,&Tang, Tao.(2007).Morphology evolutions of organically modified montmorillonite/polyamide 12 nanocomposites.POLYMER,48(9),2508-2519.
MLA	Meng, Xiaoyu,et al."Morphology evolutions of organically modified montmorillonite/polyamide 12 nanocomposites".POLYMER 48.9(2007):2508-2519.