脱脂紫茎泽兰水凝胶的制备研究  

Hydrogel Preparation Technology with Degreased Eupatorium adenophorum

作　　者：刘其星[1] 张恒[1] 陈克利[1] 高欣[1] 

机构地区：[1]昆明理工大学制浆造纸工程研究中心,云南昆明650500

出　　处：《西南林业大学学报（自然科学）》2013年第3期102-106,共5页Journal of Southwest Forestry University：Natural Sciences

基　　金：国家自然科学基金项目(21276119)资助;国家大学生创新性实验计划项目(091067427)资助;云南省教育厅科学研究基金项目(2012Y537)资助;昆明理工大学测试基金项目(20130490)资助

摘　　要：以苯-醇溶液脱脂后的粉末状紫茎泽兰为初始原料,优化制备廉价且具有高吸液性能的农林用保水水凝胶。结果表明:丙烯酸和丙烯酰胺2种单体总量与原料质量比为11∶1,丙烯酸中和度45%,引发剂用量占原料质量的1.5%,交联剂用量占总单体量的0.4%,反应温度60℃,时间5 h,制得水凝胶吸液性能较优;在去离子水和0.9%NaCl溶液中,凝胶最大饱和溶胀度分别为931 g/g和337 g/g。用傅立叶红外光谱(FT-IR)证明原料成功接枝聚丙烯酸和聚丙烯酰胺单体,通过扫描电镜(SEM)对产物表面形态进行表征。The low-cost superabsorbent hydrogel for agriculture and forestry was manufactured by taking the pulverized Eupatorium adenophorum as raw material that was degreased by benzene-ethanol mixture. The results showed that the hydrogel with optimal absorbency was obtained under the conditions that the weight ratio of AA/AM graft copolymerization to dry pulverized raw material as 11 ： 1, the neutralization degree of AA as 45 % , the weight ratio of initiator to raw material as O. 015： 1. 000, the weight ratio of cross-linker to two monomers as 0. 004： 1. 000, the reaction was taken place at 60℃ for 5 h. The maximum saturated swelling degree of the hydrogel was 931 g/g in de-ionized water and 337 g/g in 0. 9% NaCl solution. The evidence of graft copolymerization was determined by using FT - IR spectroscopy, and the surface morphology of the PAA/PAM hydrogel product was characterized by SEM.

关 键 词：紫茎泽兰 脱脂 水凝胶 吸液性能 

分 类 号：S788[农业科学—林学]