Predicting the Swelling Behavior of Acrylic Superabsorbent Polymers Used in Diapers

文献类型： 外文期刊

第一作者： Zhang, Shuxin

作者： Zhang, Shuxin;Yang, Huanlei;Yun, Na;Peng, Yangyang;Jiang, Ran;Liu, Wenqiang;Chai, Xinsheng

作者机构：

期刊名称：ADVANCES IN POLYMER TECHNOLOGY （ 影响因子：2.502； 五年影响因子：2.548 ）

ISSN： 0730-6679

年卷期： 2021 年 2021 卷

页码：

收录情况： SCI

摘要： Acrylic polymer is a superabsorbent for water and widely used in diapers, in which its swelling behavior can be significantly affected by several factors, i.e., the time, temperature, pH, and salt concentration, and thus the product performance in the applications. In this work, the water absorption behavior of acrylic superabsorbent polymers by each of these individual factors was investigated. The results showed that the water absorbency increases with the pH in the range of 2 to similar to 7 and decreases when the pH continues to increase. However, it decreases with the increases in NaCl concentration in the solution. Moreover, more water can be absorbed by the acrylic polymers at the higher temperature. Based on a previously developed kinetic swelling model and the information from the above investigations, a semiempirical model for predicting the swelling behavior of superabsorbent polymers (SAPs) under different conditions has been developed. Data showed that the model can predict (with a relative error of <4.5%) the amount of water absorbed by acrylic SAPs under different swelling conditions. The model would be very helpful to the practical application in both product design and its performance evaluation.

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