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	Interactions between metal chlorides and poly(vinyl pyrrolidone) in concentrated solutions and solid-state films
	Hao, Chaowei; Zhao, Ying; Zhou, Yong; Zhou, Lijuan; Xu, Yizhuang; Wang, Dujin; Xu, Duanfu
刊名	Journal of polymer science part b-polymer physics
	2007-07-01
卷号	45期号:13页码:1589-1598
关键词	Differential scanning calorimetry (dsc) Ft-ir Polymer-metal complexes Poly(vinyl pyrrolidone) Rheology
ISSN号	0887-6266
DOI	10.1002/polb.21138
通讯作者	Zhao, ying(yzhao@iccas.ac.cn)
英文摘要	The rheological behavior of poly(vinyl pyrrolidone) (pvp)/nn-dimethylformamide (dmf) solutions containing metal chlorides (licl, cacl2, and cocl2) were investigated, and the results showed that the nature of the metal ions and their concentration had an obvious effect on the steady-state rheological behavior of pvp-dmf solutions with different molecular weights. the apparent viscosity of the pvp-dmf solutions increased with an increasing metal-ion concentration, and the viscosity increment was dependent on the metal-ion variety. for a cacl2-containing pvp-dmf solution, for example, the critical shear rate at the onset of shear thinning became smaller with increasing cacl2 concentration. it was believed that multiple interactions among metal ions, carbonyl groups of pvp, and amide groups in dmf determined the solution properties of these complex fluids; therefore, c-13 nmr spectroscopy was used to detect the interactions in systems of pvp-cacl2-dmf and pvp-licl-dmf solutions. nmr data showed that there were obvious interactions between the metal ions and the carbonyl groups of the pvp segments in the dmf solutions. furthermore, ir spectra of the pvp/metal chloride composites demonstrated that the interaction between the metal ions and carbonyl groups in the pvp unit occurred and that the pvp chain underwent conformational variations with the metal-ion concentration. dsc results indicated that the glass transition temperatures of the pvp/metal chloride composites increased with the addition of metal ions. (c) 2007 wiley periodicals, inc.
WOS关键词	POLYMERIC LIGANDS ; AQUEOUS-SOLUTION ; COMPLEXES ; BEHAVIOR ; BLENDS ; POLYVINYLPYRROLIDONE ; IONS ; POLYVINYL-ALCOHOL) ; PERCHLORATE ; NYLON-66
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:000247282100009
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2383262
专题	中国科学院大学
通讯作者	Zhao, Ying
作者单位	1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China 2.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Joint Lab Polymer Sci & Mat Inst Chem, Beijing 100080, Peoples R China 4.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 5.Peking Univ, Coll Chem & Mole Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Hao, Chaowei,Zhao, Ying,Zhou, Yong,et al. Interactions between metal chlorides and poly(vinyl pyrrolidone) in concentrated solutions and solid-state films[J]. Journal of polymer science part b-polymer physics,2007,45(13):1589-1598.
APA	Hao, Chaowei.,Zhao, Ying.,Zhou, Yong.,Zhou, Lijuan.,Xu, Yizhuang.,...&Xu, Duanfu.(2007).Interactions between metal chlorides and poly(vinyl pyrrolidone) in concentrated solutions and solid-state films.Journal of polymer science part b-polymer physics,45(13),1589-1598.
MLA	Hao, Chaowei,et al."Interactions between metal chlorides and poly(vinyl pyrrolidone) in concentrated solutions and solid-state films".Journal of polymer science part b-polymer physics 45.13(2007):1589-1598.

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