应用化学

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3种丙烯酸系列高吸水树脂的吸水性能

朱正,赵宇*,张东真,汪阳,毕彩丰   

  1. (中国海洋大学化学化工学院,海洋化学理论与工程技术教育部重点实验室 青岛 266100)
  • 收稿日期:2012-12-12 修回日期:2013-03-21 出版日期:2013-11-10 发布日期:2013-11-10
  • 通讯作者: 赵宇,讲师; Tel:0532-66781922; E-mail:zhaoyusky781215@163.com; 研究方向:精细有机合成、海洋资源化学及应用

Water Absorbency Performance of Three Kinds of Polyacrylate Superabsorbent Polymer

ZHU Zheng, ZHAO Yu*, ZHANG Dongzhen, WANG Yang, BI Caifeng   

  1. (Key Laboratory of Marine Chemistry Theory and Technology,Ministry of Education,
    College of Chemical Engineering,Ocean University of China,Qingdao 266100,China)
  • Received:2012-12-12 Revised:2013-03-21 Published:2013-11-10 Online:2013-11-10
  • Contact: Zhao Yu

摘要: 采用反相悬浮聚合法合成了3种聚丙烯酸系列吸水树脂:聚丙烯酸钠(PAA)、丙烯酸-丙烯酰胺共聚物(P(AA/AM))和丙烯酸-马来酸酐共聚物(P(AA/MA))。 对3种树脂的吸水性、保水性、耐候性和耐电解质等性能进行测试比较。 结果表明,P(AA/MA)的吸水性能最优异,10 min内吸蒸馏水量可达3578.4 g/g;在一定的温度或压力范围内,3种树脂均有良好的保水性能,在不同温度下储存均能保持各自的吸水性;P(AA/MA)的耐电解质性能较为突出,吸生理盐水量可达107.2 g/g,其综合性能最好。

关键词: 高吸水树脂, 聚丙烯酸, 反相悬浮, 保水性能, 吸水倍率

Abstract: Three polyacrylate superabsorbent polymers: sodium-polyacrylate(PAA), poly(acrylic acid-co-acrylamide)(P(AA/AM)) and poly(acrylate acid-co-maleic acid)(P(AA/MA)) were synthesized by inverse suspension polymerization(ISP). Systematic tests and comparison were taken at water absorption, water retention, weather resistance and electrolyte resistance of the product. The results show that P(AA/MA) possesses the best water absorption performance with an absorbency for distilled water of 3578.4 g/g in 10 min. The three polymers all have good quality of water retention within a range of temperature and pressure, with P(AA/MA) showing the best in this performance. The three polymers all can keep their water absorption in different temperature storage, and P(AA/MA) has excellent quality toward electrolyte resistance, with an absorbency for normal saline of 107.2 g/g. Overall, the comparisons show that the comprehensive performance of P(AA/MA) is the best.

Key words: superabsorbent polymer, polyacrylic acid, inverse suspension polymerization, water retention, water absorbency

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