链的柔顺性对高分子交联网溶胀及相分离影响

通过对高分子极稀溶液体系得到的高分子交联网络进行理论计算,分析了高分子链的柔顺性对高分子交联网在溶剂或增塑剂中的溶胀及体系相分离影响.并对非极性高分子交联网的相分离条件进行了分析.结果表明:在网状交联体系中溶剂的平衡浓度比线性高分子溶液的高;随着链的柔顺性提高,交联网的溶胀度降低.

Effect of Chain Flexibility on the Swelling and Collapse of Polymer Networks

Theoretical calculations on polymer networks obtained from strongly diluted solutions were carried out. Effect of the flexibility of chains on their swelling and collapse was analyzed. Conditions required for the experimental observation of collapse of uncharged networks were analyzed. The equilibrium solvent concentration was seen to be higher in cross linked systems than in the solution of a linear polymer. The degree of swelling was shown to decrease with increase in the chain flexibility.