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

被引：0
|
作者：
S. A. E. Boyer
J-P. E. Grolier
L. Pison
C. Iwamoto
H. Yoshida
T. Iyoda
机构：
[1] Tokyo Metropolitan University (TMU), Department of Applied Chemistry, Graduate School of Engineering
[2] Blaise Pascal University,Laboratory of Thermodynamics of Solutions and Polymers (LTSP)
[3] Tokyo Metropolitan University (TMU),Department of Applied Chemistry, Faculty of Urban Environmental Sciences
[4] Tokyo Institute of Technology (TIT),Chemical Resources Laboratory
来源：
Journal of Thermal Analysis and Calorimetry | 2006年 / 85卷
关键词：
amphiphilic di-block copolymers; calorimetric-pVT measurements; interactions; supercritical carbon dioxide;
D O I：
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摘要：
The present work deals with the interactions between carbon dioxide, used as pressure medium, either in the gas state (GCO2) 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.
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    Boyer, S. A. E.
    Grolier, J-P. E.
    Pison, L.
    Iwamoto, C.
    Yoshida, H.
    Iyoda, T.
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    [J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2005, 81 (03) : 563 - 567
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    S. Y. Jung
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    T. Iyoda
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    Yamada, T.
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    Yoshida, H.
    Grolier, J-P. E.
    [J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2007, 89 (03) : 717 - 721
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