|
|||||
|
|
Isotropic transition of amphiphilic side-chain type liquid crystalline di-block copolymers |
|
| Authors: | T. Yamada S. A. E. Boyer T. Iyoda H. Yoshida J. -P. E. Grolier |
| Affiliation: | (1) Graduate School of Engineering, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachiouji, Tokyo 192-0397, Japan;(2) Laboratoire de Thermodynamique des Solutions et des Polymères, Université Blaise Pascal, 24 av. des Landais, 63177 Aubière Cedex, France;(3) CREST Japan Science and Technology (JST), Saitama, Japan;(4) Chemical Resources Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan;(5) Faculty of Urban Environmental Science, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachiouji, Tokyo 192-0397, Japan |
| Abstract: | The effects of nitrogen (N2) pressure on amphiphilic di-block copolymer, PEO114-b-PMA(Az)40, were investigated by scanning transitiometry. The isotropic transition temperature increased with the increase of pressure above 20 MPa. The hydrostatic pressure effects evaluated with the Clapeyron equation were smaller than the value obtained by mercury as a pressurizing medium because the amount of absorbed gas decreases the volume change at the isotropic transition. |
| Keywords: | block copolymer liquid crystal nitrogen pressure effect transitiometry |
| 本文献已被 SpringerLink 等数据库收录！ | |