Syneresis in agar hydrogels

被引：38
|
作者：
Boral, Shilpi [1 ]
Saxena, Anita [1 ]
Bohidar, H. B. [1 ]
机构：
[1] Jawaharlal Nehru Univ, Sch Phys Sci, Polymer & Biophys Lab, New Delhi 110067, India
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2010年 / 46卷 / 02期
关键词：
Agar; Hydrogel; Syneresis; SELF-BEATING MOTION; PENETRANT TRANSPORT; GELS; OSCILLATIONS; KINETICS;
D O I：
10.1016/j.ijbiomac.2009.12.008
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Agar hydrogels exhibit syneresis which creates internal osmotic stress on the physical network. It was observed that such a stress gives rise to characteristic pulsating modes (breathing modes) Experiments carried over a period of 60-day revealed that the network deformations grew monotonously when the solvent released by syneresis was removed periodically from gel surface However, when the solvent was not withdrawn, the gel exhibited very slowly relaxing breathing modes The swelling-deswelling dynamics has been discussed in the generalized framework of a dissipative damped oscillator. (C) 2009 Elsevier B V All rights reserved.
引用
收藏
页码：232 / 236
页数：5
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