耐盐型聚天冬氨酸/壳聚糖互穿网络吸水树脂制备  

Synthesis and characterization of salt tolerance IPN absorbent resin based on poly(aspartic acid)and chitosan

作　　者：卢静琼[1] 李银辉[1] 胡灯 陈晓玲[1] 刘永梅[1] 赵彦生[1] 

机构地区：[1]太原理工大学化学化工学院,太原030024

出　　处：《化工新型材料》2016年第4期53-56,共4页New Chemical Materials

基　　金：国家自然科学基金(21304066);山西省科技攻关项目(20100311117)

摘　　要：以接枝γ-氨丙基三乙氧基硅烷(KH-550)的聚琥珀酰亚胺(KPSI)和壳聚糖(CTS)为原料在水体系中合成了改性聚天冬氨酸(KPASP)/壳聚糖(CTS)互穿网络聚合物(IPN)吸水性树脂(KPASP/CTS IPN)。探讨了KPASP与CTS的配合比、交联剂用量以及交联温度对KPASP/CTS IPN吸水性能的影响。采用红外光谱(FT-IR)和扫描电镜(SEM)对该吸水性树脂结构形态进行了表征。结果表明,CTS在互穿网络中所占比例、交联剂用量和交联温度对KPASP/CTS IPN的吸液性能具有较大的影响,CTS与聚天冬氨酸(PASP)形成的互穿网络结构能够显著提高PASP的吸水性能及耐盐性。当KPASP与CTS的质量比为1∶1、交联剂甲醛为CTS的3.5%(wt,质量分数)以及交联温度为40℃时所制得的KPASP/CTS IPN在蒸馏水和生理盐水中的吸液倍率分别为325和153g/g,吸液倍率比KPASP分别提高了80.6%和132%。扫描电镜研究的结果表明KPASP/CTS IPN表面的孔状结构密度增加,比表面积增大。A novel structural poly（aspartic acid）/chitosan interpenetrating network（KPASP/CTS IPN）absorbent resin based on modified polysuccinimide（KPSI）grafted by 3-aminpropyltriethoxysilane（KH-550）and chitosan was synthesized in a water system.The resin surface morphology and composition were characterized by SEM and FT-IR.The influence of the ratio of KPASP and chitosan,crosslinking agent content and crosslinking temperature on the absorbency performances of resin were investigated respectively.The results showed that the introduction of IPN significiently improved the swelling ratio of the KPASP in physiological saline.The optimum conditions for the synthesis of KPASP/CTS IPN resin were crosslinking temperature of 40℃,the mass ratio for KPASP/chitosan as 1∶1,the content of crosslinking agent for CTS as 3.5%（wt）.The swelling ratio of KPASP/chitosan IPN in distilled water and physiological saline were 325g/g and153g/g,respectively.Compared with KPASP,the swelling ratio of KPASP/chitosan IPN was improved reached 80.6% and132%.SEM showed that the pore density and surface area of KPASP/CTS IPN had been markedly improved.

关 键 词：聚天冬氨酸 壳聚糖 互穿网络 吸水性树脂 耐盐性 

分 类 号：TQ324.8[化学工程—合成树脂塑料工业]