Zein-poly(N-isopropylacrylamide) conjugates

被引：12
|
作者：
Bromberg, L [1 ]
机构：
[1] MIT,DEPT CHEM,CAMBRIDGE,MA 02139
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 1997年 / 101卷 / 04期
关键词：
D O I：
10.1021/jp962090t
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Stable cross-linked gels were synthesized by polymerization of N-isopropylacrylamide (NIPA) blended with 3. Seed protein (zein) and 4,4'-diazido-2,2'-stilbenedisulfonic acid (DAS) in dimethyl sulfoxide following irradiation. Grafting of DAS-zein chains on polyNIPA backbone was proposed. The gels were shown to undergo discontinuous volume transition at around 32 degrees C corresponding to lower critical solution temperature of NIPA. The gel swelling was pH-sensitive. Sharp maximum on viscosity vs temperature plots was observed in suspensions of the gel particles at 32 degrees C due to interparticle network formation caused by hydrophobic interactions between polyNIPA domains.
引用
收藏
页码：504 / 507
页数：4
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