| 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 | |
| Corresponding Author | Han, Enhou(ehhan@imr.ac.cn) |
| 2009-02-01 | |
| Source Publication | ACTA METALLURGICA SINICA-ENGLISH LETTERS
 |
| ISSN | 1006-7191 |
| Volume | 22Issue:1Pages:27-34 |
| Abstract | 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. |
| Keyword | Water absorption Nano-TiO2 Polyurethane EIS |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/S1006-7191(08)60067-8 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[50499334] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000207938600005 |
| Publisher | CHINESE ACAD SCIENCES, INST METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/98283 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Han, Enhou |
| Affiliation | Chinese Acad Sci, State Key Lab Corros & Protect, Inst Met Res, Shenyang 110016, Peoples R China |
| Recommended Citation 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. |
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