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ID AN00181569-20070300-1011
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タイトル Dynamic Heat Capacity of Micellar Liquid Crystals
著者
Shigeo IMAIZUMI (Shigeo imaizumi)
社会学部
publisher
出版地 奈良
出版者 奈良大学
上位タイトル
奈良大学紀要 (Memoirs of the Nara University). Vol.35号, (2007. 3) ,p.147- 153
識別番号
ISSN
03892204
抄録 The phase transitions of cesium perfluoro-octanoate (CsPFO, C8F17COOCs) micelles in water have been studied using calorimetry,1) light-scattering and magnetic birefringence techniques.2) These micelles are disk shaped, and their size does not vary appreciably with temperature. Liquid crystal mesophases have been observed as a function of concentration and temperature,3-5) and aqueous CsPFO solutions provide a good opportunity to study the lyotropic nematic(N) - smectic A(SmA) and nematic(N) - isotropic(I) phase transitions. These transitions are second-order and weakly first-order, respectively. It is of interest to determine whether appreciable thermal fluctuation effects at these phase transitions. In order to clarify the thermodynamic nature of these transitions, we have carried out measurements using a high-resolution Joule-heating type AC calorimeter as described in elsewhere3) and also a differential scanning calorimeter (DSC) experiments on the same aqueous solutions for comparison.
言語
eng
資源タイプ text
ジャンル Departmental Bulletin Paper
Index
/ Public / 奈良大学紀要 / 35号
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