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	Surface grafting modification of fibrous silicates with polyvinylpyrrolidone and its application in nanocomposites
	Yuan, Xuepei1,2; Li, Chuncheng1; Guan, Guohu1; Xiao, Yaonan1; Zhang, Dong1
刊名	Journal of applied polymer science
	2009-01-05
卷号	111期号:1页码:566-575
关键词	Surface grafting Palygorskite Polyvinylpyrrolidone (pvp) Clay Nanocomposites
ISSN号	0021-8995
DOI	10.1002/app.29109
通讯作者	Li, chuncheng(lizy@iccas.ac.cn)
英文摘要	Chemical surface modification of fibrous silicate with polyvinylpyrrolidone (pvp) or its derivates via grafting-from and grafting-to methods was investigated. the grafting-from method was based on the immobilization of reactive end functional groups of silane coupling agents on silicate surface, followed by chain growth via radical polymerization of n-vinylpyrrolidone (nvp) to form grafted polymers with different molecular weight. in the grafting-to method, a novel copolymer pvp-171 with side functionalized groups and designed molecular weight was synthesized by radical polymerization of nvp and vinyltrimethoxysilane (db171) and then bonded to the surface of fibrous silicates. evidences from ftir, xps, tga, and bet test indicate that there are similar to 68,000 reactive sites per square meters on the surface with the grafted vinyl concentration of 59 mequiv per 100 g of clay. xrd patterns and sem images demonstrate that grafting modification was bound on the silicate surface and make the surface rough with the increase of graft-loading quantity. in contrast with grafting-to approach, grafting-from approach facilitates the dispersion of silicates in pet composites. (c) 2008 wiley periodicals, inc. j appl polym sci 111: 566-575, 2009
WOS关键词	WALLED CARBON NANOTUBES ; POLYMER BRUSHES ; CLAY ; POLYSTYRENE ; COMPOSITES ; HYBRID
WOS研究方向	Polymer Science
WOS类目	Polymer Science
语种	英语
出版者	JOHN WILEY & SONS INC
WOS记录号	WOS:000261152400067
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2398798
专题	中国科学院大学
通讯作者	Li, Chuncheng
作者单位	1.Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, CAS Key Lab Engn Plast, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Xuepei,Li, Chuncheng,Guan, Guohu,et al. Surface grafting modification of fibrous silicates with polyvinylpyrrolidone and its application in nanocomposites[J]. Journal of applied polymer science,2009,111(1):566-575.
APA	Yuan, Xuepei,Li, Chuncheng,Guan, Guohu,Xiao, Yaonan,&Zhang, Dong.(2009).Surface grafting modification of fibrous silicates with polyvinylpyrrolidone and its application in nanocomposites.Journal of applied polymer science,111(1),566-575.
MLA	Yuan, Xuepei,et al."Surface grafting modification of fibrous silicates with polyvinylpyrrolidone and its application in nanocomposites".Journal of applied polymer science 111.1(2009):566-575.

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