Isotropic transition behaviour of an amphiphilic di-block copolymer under pressure - Carbon dioxide or mercury as pressure medium

被引：8

作者：

Boyer, S. A. E.

Grolier, J-P. E.

Pison, L.

Iwamoto, C.

Yoshida, H. ^{[1
]}

Iyoda, T.

机构：

[1] Tokyo Metropolitan Univ, Fac Urban Environm Sci, Lab Appl Chem, Hachioji, Tokyo, Japan

[2] Tokyo Metropolitan Univ, Grad Sch Engn, Dept Appl Chem, Hachioji, Tokyo, Japan

[3] Univ Clermont Ferrand, LTSP, Clermont Ferrand, France

[4] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 227, Japan

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2006年 / 85卷 / 03期

关键词：

amphiphilic di-block copolymers; calorimetric-pVT measurements; interactions; supercritical carbon dioxide;

D O I：

10.1007/s10973-006-7633-z

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The present work deals with the interactions between carbon dioxide, used as pressure medium, either in the gas state (GCO(2)) or in the supercritical state (SCCO2) and amphiphilic di-block copolymers PEOm-b-PMA(Az)(n). The effect of pressure on the isotropic transition of the PEOm-b-PMA(Az)(n) copolymer was investigated using scanning transitiometry (ST). The experimental results were compared with those measured when using 'relatively inert' mercury (Hg) as pressure medium. Morphological observation of a PEOm-b-PMA(Az)(n) thin film submitted to SCCO2 was performed by atomic force microscopy (AFM) to investigate the nano-structure organization. These results indicate the possibility of modifying the nano-structure in a specific way depending on the CO2 physical state.

引用

页码：699 / 706

页数：8

共 21 条

[1] Thermal expansion of polymers submitted to supercritical CO2 as a function of pressure [J].