| 淀粉-丙烯酸接枝共聚物的合成及产物结构表征 |
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| 引用本文： | 陈展云,彭惠梅,蒋林斌,王东耀,刘汝锋,尚小琴. 淀粉-丙烯酸接枝共聚物的合成及产物结构表征[J]. 高分子材料科学与工程, 2009, 25(3): 21-24 |
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| 作者姓名： | 陈展云 彭惠梅 蒋林斌 王东耀 刘汝锋 尚小琴 |
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| 作者单位： | 广西大学化学化工学院,广西,南宁,530004;广州大学化学化工学院,广东,广州,510006 |
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| 基金项目： | 国家自然科学基金资助项目(20666001);;广东省自然科学基金资助项目(5001880);;江西省科技攻关项目(20051C0600500) |
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| 摘 要： | 以木薯淀粉为主要原料,采用反相乳液聚合方法合成淀粉-丙烯酸接枝共聚物,通过正交设计对主要影响因素及反应条件进行研究,并用红外光谱、X射线衍射、热重分析等方法表征产物结构。实验结果显示,最佳合成工艺条件为丙烯酸:淀粉=3.5,丙烯酸中和度=83.3%,过硫酸钾和N,N-亚甲基双丙烯酰胺分别为淀粉用量的3.0%和0.3%,反应温度70℃,反应时间3 h,产物吸水率>800g/g。聚合过程中淀粉与丙烯酸发生了接枝共聚反应,并且接枝反应破坏了淀粉颗粒结晶结构,接枝产物趋于无定型结构。
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| 关 键 词： | 反相乳液 接枝共聚 木薯淀粉 丙烯酸 结构表征 |
Synthesis and Characterization of Graft Copolymers of Acrylic Acid onto Starch |
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| CHEN Zhan-yun,PENG Hui-mei,JIANG Lin-bin,WANG Dongyao,LIU Ru-feng,SHANG Xiao-qin. Synthesis and Characterization of Graft Copolymers of Acrylic Acid onto Starch[J]. Polymer Materials Science & Engineering, 2009, 25(3): 21-24 |
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| Authors: | CHEN Zhan-yun PENG Hui-mei JIANG Lin-bin WANG Dongyao LIU Ru-feng SHANG Xiao-qin |
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| Affiliation: | 1.School of Chemistry and Chemical Engineering of Guangxi University;Nanning 530004;China;2.School of Chemistry and Chemical Engineering of Guangzhou University;Guangzhou 510006;China |
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| Abstract: | A graft copolymer was synthesized in water-oil inverse emulsion by copolymerization of acrylic acid(AA) onto cassava starch,with N,N-methylene diacrylamide as cosslinking agent,potassium persulfate as an initiator.The orthogonal design of the important factors was utilized in this technique.The grafting copolymerization was analysed by FT-IR,XRD and TG.The optimum reaction conditions are 3.5 mass ratio of acrylic acid to starch,0.30% mass ratio of crosslinking agent to starch,3.0% mass ratio of initiator to... |
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| Keywords: | inverse emulsion graft copolymerization cassava starch acrylic acid characterization |
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