聚丙烯酸基超吸水纤维吸液性能及吸液机理研究  

Liquid absorption property and absorption mechanism of polyacrylic-based superabsorbent fibers

作　　者：刘其霞[1] 丁志荣[1] 董震[1] 董伟伟[1] 

机构地区：[1]南通大学纺织服装学院,南通226019

出　　处：《产业用纺织品》2012年第9期20-24,共5页Technical Textiles

基　　金：交通运输部科技项目(2011319813500)

摘　　要：对聚丙烯酸基超吸水纤维(SAF)在纯水、NaCl溶液和CuSO4溶液中的吸液性能进行了研究,重点考察了浸泡时间、水温、离子浓度、离子价位和溶液pH值对超吸水纤维吸液倍率的影响,并对超吸水纤维的吸液机理进行了探讨。研究结果表明:超吸水纤维的吸液倍率受浸泡时间的影响较小,受水温、离子浓度、离子价位和溶液pH值的影响较大;其吸液机理与Flory离子网络理论一致,纤维内部高分子网络内外的渗透压差是超吸水纤维吸液的主要动力因素;超吸水纤维还呈现出较好的重复吸水能力。The swelling behaviors of SAF in distilled water and various saline solutions were investigated and the absorption mechanism of SAF was discussed. Emphasises were laid on the effects of swelling time, water temperature, saline solutions as well as the pH values of solutions on water absorbency of SAF. Results showed that water absorbency of SAF was less affected by swelling time but significantly influ- enced by water temperature, ion concentration and ionic valence of saline solutions as well as the pH values of solutions. The absorption mechanism of SAF is consistent with Flory＇ s theory of network and the osmotic pressure difference between SAF and the external solution is the motive force for swelling of SAF. SAF also showed good repeated absorption properties in distilled water.

关 键 词：超吸水纤维 吸液性能 吸液机理 

分 类 号：TQ342.86[化学工程—化纤工业]