| 机械活化木薯淀粉丙烯酰胺共聚物结构表征及反应机理 |
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| 引用本文： | 谢新玲,童张法,黄祖强,张友全,廖丹葵.机械活化木薯淀粉丙烯酰胺共聚物结构表征及反应机理[J].高分子材料科学与工程,2010(4):51-54. |
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| 作者姓名： | 谢新玲 童张法 黄祖强 张友全 廖丹葵 |
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| 作者单位： | 广西大学化学化工学院; |
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| 基金项目： | 国家自然科学基金资助项目(20666001);;广西大学科研基金资助项目(X081055) |
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| 摘 要： | 以机械活化30min木薯淀粉(C30-St)和丙烯酰胺(AM)为主要原料,采用反相乳液法合成C30-St与AM接枝共聚物(C30-St-g-PAM),并通过红外光谱、扫描电镜、X射线衍射、热分析等手段对接枝共聚物进行结构分析和聚合机理探讨。实验结果显示,AM成功接枝于C30-St上;C30-St-g-PAM具有网状多孔洞结构,共聚反应在淀粉的无定型区和结晶区同时发生,反应不属于表面控制模型;共聚反应改变了原淀粉的聚集状态,接枝产物基本上为无定型的聚集态结构;热稳定性比原淀粉接枝共聚物(C-St-g-PAM)增强;C30-St-g-PAM的粒度一般在15μm～30μm。
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| 关 键 词： | 木薯淀粉 机械活化 反相乳液 接枝共聚物 机理 表征 |
Characterization and Reaction Mechanism of Graft Copolymer of Acrylamide onto Mechanically-Activated Starch |
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| XIE Xin-ling,TONG Zhang-fa,HUANG Zu-qiang,ZHANG You-quan,LIAO Dan-kui.Characterization and Reaction Mechanism of Graft Copolymer of Acrylamide onto Mechanically-Activated Starch[J].Polymer Materials Science & Engineering,2010(4):51-54. |
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| Authors: | XIE Xin-ling TONG Zhang-fa HUANG Zu-qiang ZHANG You-quan LIAO Dan-kui |
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| Affiliation: | School of Chemistry and Chemical Engineering;Guangxi University;Nanning 530004;China |
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| Abstract: | The mechanically-activated cassava starch acrylamide graft copolymers (C30-St-g-PAM) were synthesized by inverse emulsion polymerization with mechanically-activated 30 min cassava starch and acrylamide as raw materials. The structures of C30-St-g-PAM were characterized with Fourier transform infrared spectroscopy (FT-IR),differential scanning calorimetry (DSC),X-ray diffraction (XRD) and scanning electronic microscope (SEM). Meanwhile,the graft copolymerization mechanism in the inverse emulsion was discusse... |
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| Keywords: | cassava starch mechanical activation inverse emulsion graft copolymer mechanism characterization |
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