高吸水性树脂的结构设计与性能改善

利用Flory凝胶理论阐明了高吸水性树脂的吸水机理 ,并解释了高分子链上的电荷密度、外界溶液离子强度以及交联度对树脂吸水倍数和吸水速率的影响。介绍了利用分子设计和颗粒形状设计对高吸水性树脂进行结构设计以改善树脂综合性能的方法。指出今后高吸水性树脂的研究重点应集中在高性能化、材料复合化、智能性凝胶、生物可降解性的研究等几个方面

Structure Design and Properties Improvement of Superabsorbent Polymer

The absorbing mechanism of superabsorbent polymer is explained according to Flory thermodynamic formulation theory. Factors affecting water absorbency and water absorbent rate are interpreted in terms of the density of ionic group on the backbone, ionic strength in external solution and crosslinking density. A series of methods for improving the comprehensive properties of superabsorbent polymers , such as molecular design of copolymerization and pellet shape design are introduced. It is pointed out that, the future research on the superabsorbent polymer should be focused on high performance,complex materials, intelligential gel,biodegradation and anti-electrolyte ability.