紫外辐射合成CTs/AMPS/MA可降解型高吸水树脂  

Preparation of CTs/AMPS/MA degradable superabsorbent resin via ultraviolet irradiation

作　　者：姚同和[1] 谭德新[1] 欧阳雪梅[1] 

机构地区：[1]安徽理工大学化学工程学院,淮南232001

出　　处：《化工新型材料》2014年第10期41-44,共4页New Chemical Materials

基　　金：国家自然科学基金(51173002);安徽省高校自然科学基金重点项目(KJ2013A087;KJ2013A095)

摘　　要：以壳聚糖(CTs)﹑马来酸酐(MA)﹑2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为原料,过硫酸铵(APS)为引发剂,N,N'-亚甲基双丙烯酰胺(NMBA)为交联剂,采用紫外光固化的方法合成CTs/AMPS/MA三元共聚高吸水树脂。研究了反应条件对树脂吸水性能的影响,结果表明,当固含量为15.87%,nAMPS∶nMA=14∶1,ω(CTs)=2%,ω(NMBA)=2.5%,ω(APS)=0.3%,pH=3,固化时间为5min时可得到具有较好吸水性的高吸水树脂,在蒸馏水中的最大吸水率为555g/g。采用FT-IR和TGA对树脂结构及热稳定性进行表征,并对其吸水速率及动力学进行分析,反吸液能力测定表明制备的树脂具有一定的降解性。Using N,N methylene-bis-acrylmide（NMBA）as crosslinker and ammonium persulfate（APS）as initiator, a superabsorbent resin of chitosan （CTs）, 2-acrylamido -2-methylpropanesulfonic acid （AMPS） and maleic anhydride （MA） was prepared via ultraviolet irradiation. The influences of reaction conditions on water absorbency were investigated. The results showed that the optimized conditions were obtained by single factor experiments as follows：ω（monomer）= 15. 87%,nAMPS ： nMA： 14 ： 1,ω（CTs）-2% ,ω（NMBA）= 2. 5%,ω（APS）=0. 3% ,pH=3,curing time= 5min and the ab- sorbency of copolymer was 555（g/g）for distilled water. The water kinetic process of absorbing water and water keeping function of the resin were investigated. The molecular structure and thermal stability of the resin were characterized by FT- IR and TGA,respectively. The degradable property of the resin was showed via the repeatable absorbency water.

关 键 词：壳聚糖 马来酸酐 2-丙烯酰胺基-2-甲基丙磺酸紫外固化 高吸水树脂 

分 类 号：TQ324.8[化学工程—合成树脂塑料工业]