Synthesis and swelling kinetics of poly(dimethylaminoethyl acrylate methyl chloride quaternary-co-itaconic acid) hydrogels
Synthesis and swelling kinetics of poly(dimethylaminoethyl acrylate methyl chloride quaternary-co-itaconic acid) hydrogels
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DOI：
10.1021/la980982
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发表时间：
1999-07-06
期刊：
影响因子：
3.9
通讯作者：
Katime, I
中科院分区：
文献类型：
--
作者：
Quintana, JR;Valderruten, NE;Katime, I
以丙烯酸二甲氨基乙酯、氯甲烷、季铵盐和衣康酸为单体，合成了不同单体配比的水凝胶。不同的干凝胶浸泡在水中的溶胀过程进行监测的重量增加作为时间的函数。溶胀等温线由一个陡峭的初始。部分，并逐渐趋于平衡溶胀极限。实验数据表明，溶胀过程服从二级动力学。根据动力学方程得到的实验直线，确定了各单体配比下的速率常数和平衡含水量。这两个幅度下降的干凝胶中的亚硝酸含量的增加。
Hydrogels of dimethylaminoethyl acrylate methyl chloride quaternary and itaconic acid have been synthesized with different monomer ratios. The swelling process of the different xerogels immersed in water was monitored by the weight increase as a function of time. The swelling isotherms consisted of a steep initial. portion and leveled off asymptotically to the equilibrium swelling limit. The experimental data suggest clearly that the swelling process obeys second-order kinetics. The rate constant and the equilibrium water content were determined for every monomer ratio from the experimental straight lines obtained according to the kinetics equation. Both magnitudes decreased as the itaconic acid content in the xerogel increased.