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

页码：3590 / 3597

页数：8