木质素接枝丙烯酸-丙烯酰胺高吸水性树脂的制备与表征  

Preparation and characterization of lignin grafted acrylic acid-acrylamide superabsorbent resin

作　　者：吴宇雄 周尽花[2] 叶翠层[2] 孙汉洲[2] 

机构地区：[1]中南林业科技大学材料科学与工程学院,湖南长沙410004 [2]中南林业科技大学应用化学研究所,湖南长沙410004

出　　处：《中南林业科技大学学报》2011年第4期205-209,共5页Journal of Central South University of Forestry & Technology

基　　金：湖南省科技计划项目(2009FJ3100);中南林业科技大学引进高层次人才科研启动基金(104-0178)

摘　　要：采用溶液聚合法,以程序升温的方式制备了木质素接枝丙烯酸-丙烯酰胺(LS-g-P(AA-co-AM))高吸水性树脂,测定了树脂的吸水性能,采用红外、扫描电镜及热重分析对树脂进行了表征。红外确证了木质素与丙烯酸-丙烯酰胺的接枝,该树脂形成了多孔海绵状结构,具有良好的耐热性,树脂的平衡吸蒸馏水倍率为1 156g/g,吸生理盐水倍率为122g/g。该木质素基高吸水性树脂的开发提高了吸水性树脂的耐盐性能,同时为木质素的利用提供了新途径。Lignin grafted acrylic acid-acrylamide superabsorbent resin LS-g-P（AA-co-AM） was prepared by solution polymerization with temperature step-increasing mode.FTIR,SEM and TGA were employed to characterize the superabsorbent resin.Water absorbency and physiological saline absorbency of the resin were measured.LS-g-P（AA-co-AM） shows high water absorbency（1 156 g/g） and high physiological saline absorbency（122 g/g）.FTIR analysis confirmed the graft copolymerization of lignosulfonate with acrylic acid and acrylamide.SEM photograph show the lignin-based superabsorbent resin had formed porous sponge structure,and thermogravimetric analysis indicat the superabsorbent resin had good thermal stability.Introduction of lignosulfonate to the superabsorbent resin has improved the resin＇s salt resistance,and the development of this kind of lignin-based superabsorbent resin provides a new approach for the utilization of lignin.

关 键 词：高吸水性树脂 木质素磺酸盐 木质素 制备 表征 

分 类 号：TQ325[化学工程—合成树脂塑料工业]