淀粉接枝甲基丙烯酸缩水甘油酯共聚物的合成与表征

化工进展

淀粉接枝甲基丙烯酸缩水甘油酯共聚物的合成与表征

谢国仁，尚小琴，刘汝锋，胡晶，林梅莹

广州大学化学化工学院，珠江三角洲水源保护与水质安全教育部重点实验室（广州大学），广东广州 510006

出版日期:2010-10-05 发布日期:2010-10-05

Synthesis and characterization of glycidyl methacrylate-starch graft copolymer

XIE Guoren，SHANG Xiaoqin，LIU Rufeng，HU Jing，LIN Meiying

School of Chemistry and Chemical Engineering，Guangzhou University，Key Laboratory of Safety and Protection of Water Quality in the Pearl River Delta，Ministry of Education （Guangzhou University），Guangzhou 510006，Guangdong，China

Online:2010-10-05 Published:2010-10-05

摘要/Abstract

摘要：

以木薯淀粉为原料、过硫酸钾为引发剂，通过乳液聚合法制备淀粉甲基丙烯酸缩水甘油酯（GMA）接枝共聚物，系统考察了反应条件对接枝共聚物接枝率（G）、接枝效率（GE）以及环氧值（EV）的影响，并通过TG-DSC对接枝共聚物结构进行了表征。结果表明：在m(GMA)∶m(淀粉)=2，过硫酸钾浓度为6 mmol/L，反应温度60 ℃，反应时间1 h的条件下，可制得接枝率、接枝效率以及环氧值分别为：64.95%、95.57%、4.24 mmol/g的接枝共聚物；接枝共聚物热稳定性比原淀粉有所提高。

Abstract:

Graft copolymerization of glycidyl methacrylate（GMA）onto cassava starch was carried out in emulsion with potassium persulfate as an initiator. Influence of reaction conditions on the percentage of grafting（G），grafting efficiency（GE）and epoxy value（EV）were investigated. Structure of the synthesized graft copolymers was characterized by TG-DSC. Results showed that graft copolymer with high values of G，GE and EV was obtained. The optimal conditions for the graft copolymerization were found as m(GMA)：m(starch)= 2 with initiator concentration of 6 mmol·L^－1for 1h of reaction at 60 ℃，with which the G，GE and EV values of the obtained graft copolymer were 64.95%，95.57% and 4.24 mmol/g，respectively. It was proved that the thermal stability of the graft copolymer was better than cassava starch.

谢国仁，尚小琴，刘汝锋，胡晶，林梅莹. 淀粉接枝甲基丙烯酸缩水甘油酯共聚物的合成与表征 [J]. 化工进展.

XIE Guoren，SHANG Xiaoqin，LIU Rufeng，HU Jing，LIN Meiying. Synthesis and characterization of glycidyl methacrylate-starch graft copolymer[J]. Chemical Industry and Engineering Progree.