PHOTOINDUCED PHASE-TRANSITION OF GELS

被引：279

作者：

MAMADA, A

TANAKA, T

KUNGWATCHAKUN, D

IRIE, M

机构：

[1] MIT,DEPT PHYS,CAMBRIDGE,MA 02139

[2] MIT,CTR MAT SCI & ENGN,CAMBRIDGE,MA 02139

[3] KYUSHU UNIV,INST ADV MAT STUDY,KASUGA,FUKUOKA 816,JAPAN

来源：

MACROMOLECULES | 1990年 / 23卷 / 05期

关键词：

Aromatic Polymers - Photosensitivity - Copolymers - Swelling - Latexes - Radiation Effects - Polymers - Latex - Ultraviolet Radiation - Effects;

D O I：

10.1021/ma00207a046

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Equilibrium swelling curves of copolymer gels of N-isopropylacrylamide and a photosensitive molecule, bis(4-(dimethylamino)phenyl)(4-vinylphenyl)methyl leucocyanide, were determined as a function of temperature under ultraviolet irradiation. Without ultraviolet irradiation the gels underwent a sharp, yet continuous, volume change, whereas upon ultraviolet irradiation they showed a discontinuous volume phase transition. For fixed appropriate temperatures, the gels discontinuously swelled in response to irradiation of ultraviolet light and shrank when the light was removed. The phenomena were caused by osmotic pressure of cyanide ions created by ultraviolet irradiation. © 1990, American Chemical Society. All rights reserved.

引用

页码：1517 / 1519

页数：3