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《Journal of Northeast Normal University (Natural Science Edition)》 2002-03
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Influence of acidity, temperature and initiator on syntheesis and properties of starch graft copolymerization super water-absorbent resin

YAN Li-kai, LAN Ya-qian,SU Zhong-min,SHAO Chen, LI Bao-li,LIU Dong-bo, LI Xue-zhi, WANG Zhan-liang, YANG Shou-jiang, WANG Rong-shun (Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China)  
The super water-absorbent resin was synthesized by using starch from maize and propylene based monomer as the raw material. The reaction route of synthesis was improved. Based on the mechanism of free radical polymerization, graft polymerization between starch and propylene based monomer was carried out under the action of initiator and cross-linker. They also study the acidity, temperature and initiator amount and monomer/starch feed ratios effect on the water absorption property of super absorbent resin. The best operating condition was found in the end. At the same time ,two kinds of radical model of starch chain were optimized at the level of 6-31G basis set by quantum chemical ab initio UHF method. The atomic net charge, population of frontier molecular orbital, stability and reactive properties of free radicals were analyzed, the mechanism of graft polymerization was discussed.
【Fund】: 吉林省科技厅基础资助项目 ( 2 0 0 1 0 34 4 )
【CateGory Index】: TQ316.6
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