摘要
在Flory的物理缠结模型基础上,本文阐述了高分子凝胶网络中存在超短链及勾结链等非理想结构的可能性及其对凝胶溶胀性能的影响。从而进一步修改了弹性模型,并结合格子流体模型,提出了1个新的非离子凝胶热力学模型。该模型在解释凝胶相行为以及关联温度敏感性水凝胶的溶胀平衡曲线方面取得了良好效果。
Possibility of non -Gaussian short chains and interlooping chains formed in gel-network, and their influence on swelling characteristics of gels are discussed on the basis of Flory's physical -entanglement model. A new molecular thermodynamic theory for non -ionic gels basec on a lattic - fluid model and an elastic model is introduced in which the elastic contribution by the non -Gaussian short chains and interlooping chains is included. The theory can be used to describe various phase behaviors for temperature -sensitive gels. Satisfactory results art obtaind in the correlation of practical swelling equilibria.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1995年第5期524-531,共8页
CIESC Journal
关键词
水凝胶
温度敏感性
凝胶
分子热力学模型
hydrogels,temperature -sensitivity,swelling equilibria,gel network,elastic model, moleculai thermodynamic model.
