不同含水量下水凝胶的性能研究

Research of the Properties of Hydrogels with Various Water Contents

本文以CBMA水凝胶为研究对象,进而讨论不同含水量下的水凝胶的指标变化情况。首先,我们给出水凝胶的分子动力学模型,并且模拟随着时间的增加,侧链的寿命自相关函数表现出不同的变化趋势。其次,在含水量为62%至71%之间,侧链对的特征寿命表现出大幅下降的趋势。最后,研究发现CBMA水凝胶中侧链对的数目在含水量大于62%时数目逐渐减少。模拟结果与已有的实验结果保持一致。

In this paper, CBMA hydrogel is used as the research object and then the change of hydrogel index under different water contents is mainly discussed. First of all, molecular dynamics model of hy-drogel is provided. It is simulated that lifetime autocorrelation functions are expressed with vari-ation trends as the time scale increases. Furthermore, it is shown that a large decrease in charac-teristic lifetime of side-chain pairs occurs between 62% water content and 71% water content. Finally, the number of side-chain pairs in hydrogels decreases quickly over 62% water content according to the simulation results. This point is the same as the results of the available experi-mental results.