Phase Transition and Phase Transformation in Block Copolymer Nanoparticles

被引：91

作者：

Higuchi, Takeshi ^{[1
]}

Motoyoshi, Kiwamu ^{[2
]}

Sugimori, Hidekazu ^{[3
]}

Jinnai, Hiroshi ^{[1
,3
]}

Yabu, Hiroshi ^{[4
,5
]}

Shimomura, Masatsugu ^{[1
,4
]}

机构：

[1] Tohoku Univ, WPI Res Ctr, Adv Inst Mat Res WPI AIMR, Aoba Ku, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Grad Sch Engn, Sendai, Miyagi 9808579, Japan

[3] Kyoto Inst Technol, Dept Polymer Sci & Engn, Sakyo Ku, Kyoto 6068585, Japan

[4] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

[5] Japan Sci & Technol Agcy JST, Precursory Res Embryon Sci & Technol PRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2010年 / 31卷 / 20期

关键词：

block copolymer; microphase separation structure; nanoparticle; phase transition; phase transformation; DIBLOCK COPOLYMER; SEPARATION STRUCTURES; THIN-FILMS; NANOSTRUCTURES; CONFINEMENT; ALIGNMENT; SYSTEMS; BLENDS; ARRAYS;

D O I：

10.1002/marc.201000299

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Block copolymer nanopaticles were prepared from the mixture solutions containing good/poor solvents by a simple evaporation process. The block copolymers formed disorder, unidirectionally stacked lamellar, and onion-like structures in nanoparticles depending on preparation temperatures. Thermal annealing induced the disorder-order phase transition and order-order phase transformation in the block copolymer nanoparticles, even though the annealing temperature is lower than the of one polymer segment. The unusual thermal behaviors suggest that the glass transition temperature of the block copolymer is decreased by the effect of nanoparticle, whose surface areas are larger than their volumes.

引用

页码：1773 / 1778

页数：6

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