Phase Behavior of Block Copolymers in Selective Supercritical Solvent

被引：7
|
作者：
Ito, Masateru M. M. [1 ]
Ito, Kohzo [1 ]
Shibayama, Mitsuhiro [2 ]
Sugiyama, Kenji [3 ]
Yokoyama, Hideaki [1 ,4 ]
机构：
[1] Univ Tokyo, Dept Adv Mat Sci, Kashiwa, Chiba 2778561, Japan
[2] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
[3] Hosei Univ, Dept Chem Sci & Technol, Koganei, Tokyo 1848584, Japan
[4] Japan Sci & Technol Agcy, Precursory Res Embryon Sci & Technol PRESTO, Chiyoda Ku, Tokyo 1020075, Japan
来源：
MACROMOLECULES | 2015年 / 48卷 / 11期
关键词：
DIBLOCK COPOLYMERS; POLYMERS; TRANSITION;
D O I：
10.1021/acs.macromol.5b00162
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The phase behavior of a block copolymer and supercritical fluid system was investigated. When a particular block was selectively swollen by the supercritical fluid, the apparent volume fraction of one domain was controlled by the pressure of the supercritical fluid. The morphological variation of polystyrene-b-poly[2-(perfluorooctylethyl) methacrylate]s (PSPFMAs) with different ratios of PS to PFMA and the total degree of polymerization were analyzed. Time-resolved small-angle neutron scattering measurement revealed that lamellar and hexagonal phases coexist metastably, which may be induced by fluctuation of the supercritical fluid.
引用
收藏
页码：3590 / 3597
页数：8
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