A study on water absorption in freestanding polyurethane films filled with nano-TiO2 pigments by capacitance measurements

doi:10.1016/S1006-7191(08)60067-8

IMR OpenIR

	A study on water absorption in freestanding polyurethane films filled with nano-TiO2 pigments by capacitance measurements
	Sun, Mingcheng; Liu, Fuchun; Shi, Hongwei; Han, Enhou
通讯作者	Han, Enhou(ehhan@imr.ac.cn)
	2009-02-01
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	22 期号:1 页码:27-34
摘要	The electrochemical impedance spectroscopy (EIS) was used to evaluate the water transport and dielectric properties of polyurethane films filled with nano-TiO2 at different pigment/base (P/B) values in 0.5 mol/L NaCl solutions. EIS results were compared with gravimetric measurements on the freestanding films. The amount of water absorption showed great discrepancy between the two methods. The diffusion coefficient in the polyurethane film with P/B=30% was the smallest among those filled with nano-TiO2 pigments. The dielectric constant e of the polyurethane varnish film obtained from the initial capacitance was in the range of typical values of polymers. SEM was used to measure the distribution of nano-TiO2 particles in the polyurethane films.
关键词	Water absorption Nano-TiO2 Polyurethane EIS
资助者	National Natural Science Foundation of China
DOI	10.1016/S1006-7191(08)60067-8
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[50499334]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000207938600005
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：11[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/321006/98285
专题	中国科学院金属研究所
通讯作者	Han, Enhou
作者单位	Chinese Acad Sci, State Key Lab Corros & Protect, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Sun, Mingcheng,Liu, Fuchun,Shi, Hongwei,et al. A study on water absorption in freestanding polyurethane films filled with nano-TiO2 pigments by capacitance measurements[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2009,22(1):27-34.
APA	Sun, Mingcheng,Liu, Fuchun,Shi, Hongwei,&Han, Enhou.(2009).A study on water absorption in freestanding polyurethane films filled with nano-TiO2 pigments by capacitance measurements.ACTA METALLURGICA SINICA-ENGLISH LETTERS,22(1),27-34.
MLA	Sun, Mingcheng,et al."A study on water absorption in freestanding polyurethane films filled with nano-TiO2 pigments by capacitance measurements".ACTA METALLURGICA SINICA-ENGLISH LETTERS 22.1(2009):27-34.