Wide-range control of deswelling time for thermosensitive poly(N-isopropylacrylamide) gel treated by freeze-drying

被引：74

作者：

Kato, N ^{[1
]}

Sakai, Y ^{[1
]}

Shibata, S ^{[1
]}

机构：

[1] Utsunomiya Univ, Fac Engn, Dept Appl Chem, Utsunomiya, Tochigi 3218585, Japan

来源：

MACROMOLECULES | 2003年 / 36卷 / 04期

关键词：

D O I：

10.1021/ma0214198

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Wide-range control of deswelling time for thermosensitive poly(N-isopropylacrylamide) gel treated by freeze-drying (FD) was discussed. The effect of the FD treatment on the pore formation was clarified by images of scanning electron microscopy (SEM). The deswelling profiles were determined by jumping the temperature from below to above the lower critical solution temperature (LCST) of the gel. It was demonstrated that the porous structure of the polymer gel could be altered with controlling the equilibrium swelling degree of gels before the FD treatment and deswelling time was shortened by the FD treatment.

引用

页码：961 / 963

页数：3

共 20 条

[1]

AIZAWA M, 1972, B CHEM SOC JPN, V45, P3031, DOI 10.1246/bcsj.45.3031

[2] PROPERTIES OF WATER IN MACROMOLEULAR GELS .3. DILATOMETRIC STUDIES OF PROPERTIES OF WATER IN MACROMOLECULAR GELS [J].

AIZAWA, M ;

SUZUKI, S .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1971, 44 (11) :2967-+

[3] Morphology variation of porous polymer gels by polymerization in lyotropic surfactant phases [J].

Antonietti, M ;

Caruso, RA ;

Göltner, CG ;

Weissenberger, MC .

MACROMOLECULES, 1999, 32 (05) :1383-1389

[4]

De Rossi D., 1992, Journal of Intelligent Material Systems and Structures, V3, P75, DOI 10.1177/1045389X9200300105

[5]

DONG LC, 1990, P INT S CONTROL REL, V17, P325

[6]

GEHRKE SH, 1993, ADV POLYM SCI, V110, P81

[7] ANALYSIS OF KINETIC-BEHAVIOR OF TEMPERATURE-SENSITIVE WATER-ABSORBING HYDROGEL [J].

HUANG, X ;

UNNO, H ;

AKEHATA, T ;

HIRASA, O .

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, 1987, 20 (02) :123-128

[8] Microporous, responsive hydroxypropyl cellulose gels. 1. Synthesis and microstructure [J].

Kabra, BG ;

Gehrke, SH ;

Spontak, RJ .

MACROMOLECULES, 1998, 31 (07) :2166-2173

[9]

KABRA BG, 1991, POLYM COMMUN, V32, P322

[10] Acceleration of deswelling of poly(N-isopropylacrylamnide) hydrogel by the treatment of a freeze-dry and hydration process [J].

Kato, N ;

Takahashi, F .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1997, 70 (06) :1289-1295

← 1 2 →