高含量丙烯酸膨润土/聚丙烯酸钠高吸水性复合材料的研究Ⅰ:制备工艺与形貌  

Study on acrylic acid bentonite of high amount/poly(sodium acrylate) superabsorbent compositeⅠ:the preparation process and morphology

作　　者：付丽华[1] 彭英知[1] 韦藤幼[1] 童张法[1] 

机构地区：[1]广西大学化学化工学院广西石化资源加工及过程强化技术重点实验室,广西南宁530004

出　　处：《功能材料》2012年第12期1579-1582,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(20766001;21076046)

摘　　要：通过特殊工艺将丙烯酸膨润土(简称ABT)和丙烯酸钠单体采用溶液聚合法制备出高含量丙烯酸膨润土/聚丙烯酸钠高吸水性复合材料(简称HABT/PAA)。SEM考察材料的形貌得知,ABT以20～30nm的尺寸较均匀、无序地分散在聚合物基体中,且与聚合物有很好的相容性。对合成工艺进行了优化得到较优的工艺:ABT用量为单体质量的30%(质量分数),交联剂用量为单体质量的0.3%(质量分数),引发剂用量为单体质量的1.1%(质量分数),体系总水量为单体质量的340%(质量分数),中和度为64%,在此条件下,材料吸附去离子水的能力为1103g/g。同时,HABT/PAA的保水性能较聚丙烯酸钠(PAA)好。Superabsorbent composite of high amount of acrylic acid bentonite/poly(sodium acrylic) was synthesized through solution polymerization with acrylic acid bentonite(ABT) and sodium acrylic and acrylic acid.The morphology of the composite was observed by scanning electron microscope(SEM).The results show that acrylic acid bentonite is evenly and disorder dispersed in the composite with the sheets of 20-30 nm thickness.The preparation process are optimized.The results are as follows.The amount of ABT,crosslinker and initiator are 30wt%,0.3wt%,1.1wt% of the monomer mass respectively.The total water in the system is 340 % of the monomer mass,the neutralization degree is 64 %).The absorbency of the composite is 1103 g/g in deionized water in the conditions.At the same time,the water retention property of the superabsorbent composite(PAA) is better compared to that of PAA.

关 键 词：膨润土 丙烯酸 复合材料 高吸水性树脂 

分 类 号：TB324[一般工业技术—材料科学与工程]