The cooperative binding behavior of sodium dodecyl sulfate to crosslinked chitosan films

被引：0
作者：
Bae, HS
Hudson, SM
机构：
[1] CHANGWON NATL UNIV, DEPT CLOTHING & TEXT, CHANG WON 641773, SOUTH KOREA
[2] N CAROLINA STATE UNIV, FIBER & POLYMER SCI PROGRAM, RALEIGH, NC 27695 USA
来源：
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1997年 / 35卷 / 17期
关键词：
chitosan; dodecyl sulfate; crosslinked films; cooperative binding;
D O I：
10.1002/(SICI)1099-0518(199712)35:17<3755::AID-POLA15>3.0.CO;2-C
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 binding behavior of sodium dodecyl sulfate (SDS) to cationic chitosan, in the form of a swollen crosslinked film is described. Chitosan films were crosslinked with epichlorohydrin. Binding isotherms were determined potentiometrically. The binding isotherms of the crosslinked chitosan was compared to the binding isotherms of chitosan in free solution. As expected, a more highly cooperative binding phenomena is observed, than for cationic chitosan in free solution. The collapse of the gel occurs at a binding fraction greater than 0.6. The collapsed cationic chitosan/SDS complex is described. The presence of hydrophobic regions within the chitosan-SDS complex was demonstrated with the oleophilic dyes C.I. Disperse Yellow 23 and C.I. Solvent Green 3. (C) 1997 John Wiley & Sons, Inc.
引用
收藏
页码：3755 / 3765
页数：11
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