聚乙烯醇
衣康酸
材料科学
高吸水性高分子
互穿聚合物网络
差示扫描量热法
水溶液
热重分析
化学工程
聚合物
吸水率
高分子化学
热稳定性
核化学
聚合
单体
复合材料
化学
有机化学
物理
工程类
热力学
作者
Yong Rok Kwon,Hae Chan Kim,Jung Soo Kim,Ju‐Hee So,Young‐Wook Chang,Dong Hyun Kim
摘要
Abstract Semi‐interpenetrating polymer network (semi‐IPN) technology was introduced in order to improve the gel strength and salt resistance of itaconic acid (IA)‐based superabsorbent polymers (SAPs). A semi‐IPN SAP based on IA and 2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid (AMPS) was synthesized. Polymerization was performed using a one‐pot method in an aqueous solution in the presence of polyvinyl alcohol (PVA). The structural and thermal properties of PVA/poly(IA‐ co ‐AMPS) were studied using Fourier transform infrared, differential scanning calorimetry, and thermogravimetry analysis. PVA formed strong hydrogen bonds with hydrophilic functional groups in the SAP network to improve the gel strength and thermal stability of the SAP. A PVA content of 6 wt% increased the centrifuge retention capacity and absorbency under load of the SAP to 60.1 and 16.4 g/g, respectively. Owing to the less salt‐sensitive hydroxyl groups of PVA, semi‐IPN SAP showed higher absorption (up to 26.3%) in an aqueous salt solution. The resulting SAP has a very low concentration of residual monomers (167.4 ppm). Experimental results suggest that PVA/poly(IA‐ co ‐AMPS) is an eco‐friendly SAP with excellent absorption properties, making it suitable for application in personal care products.
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