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当前位置: 首页 > 文章 > 化学法和微波法引发淀粉与丙烯酸甲酯接枝共聚反应的比较 安徽农业科学 2009,37 (24) 11358-11359+11391
Position: Home > Articles > Comparison on the Grafting Copolymerization Reactions of Starch and Methyl Acrylate Initiated by Chemical and Microwave Methods Journal of Anhui Agricultural Sciences 2009,37 (24) 11358-11359+11391

化学法和微波法引发淀粉与丙烯酸甲酯接枝共聚反应的比较

作  者：
刘崑;马涛
单  位：
辽宁医学院食品科学与工程学院;沈阳农业大学
关键词：
化学法;微波法;丙烯酸甲酯;玉米淀粉;接枝共聚物
摘  要：
[目的]探索淀粉与乙烯基单体接枝共聚物的制备方法。[方法]分别采用化学法和微波法制备淀粉与丙烯酸甲酯的接枝共聚物,并对其物理性质进行初步研究。[结果]图1(2)和图2(1)的曲线走向基本相同,与玉米淀粉的谱图比较,在相同位置出现羰基的伸缩振动峰(1 734 cm-1)和羟基的弯曲振动峰(1 436 cm-1)。图1(3)和图2(2)中淀粉羟基的伸缩振动峰消失,在2 954、1 734、1 457及1 160 cm-1处分别为酸解剩余物中CH、>C=O、σCH2.CH3和C-O-O的伸缩振动峰。化学法制备淀粉接枝物的最佳反应温度为34℃,最佳反应时间为3.0～3.5 h;微波法制备淀粉接枝物在Defrost档位下,以(30 s+30 s)的形式反应6 min的接枝效果最佳。微波法的反应时间是化学法的30～35倍。[结论]化学法的接枝百分率和接枝效率明显高于微波法,微波法制备节约时间、能源。
译  名：
Comparison on the Grafting Copolymerization Reactions of Starch and Methyl Acrylate Initiated by Chemical and Microwave Methods
作  者：
LIU Kun et al (College of Food Science and Engineering,Liaoning Medical University,Jinzhou,Liaoning 121001)
关键词：
Chemical method;Microwave method;Methyl acrylate;Corn starch;Graft copolymer
摘  要：
[Objective] The purpose of the research was to explore the preparation method of the graft copolymer of starch and vinyl monomer.[Method] The graft copolymer of starch and methyl acrylate was prepared by chemical and microwave methods resp.and its physical properties were researched preliminarily.[Result] The curve trends in Picture 1(2) and Picture 2(1) were basically same,compared with the spectrogram of corn starch,there were stretching vibration band of carbonyl and bending vibration band of hydroxyl appeared at the same positions of 1 73 4 cm-1 and 1 436 cm-1.In Picture 1(3) and Picture 2(2),the stretching vibration band of starch hydroxyl disappeared and there were stretching vibration bands of CH,>C=O,σCH2·CH3 and C-O-O in acidolysis residues appeared at 2 954,1 734,1 457 and 1 160 cm-1 resp.The optimum reaction temperature and time of preparing starch graft by chemical method were 34 ℃ and 3.0-3.5 h.The grafting effect of preparing starch graft by microwave method under Defrost tap and reacting in the form of(30 s+30 s) for 6 min was best.The grafting reaction time of microwave method was 30-35 times of that of chemical method.[Conclusion] The grafting percentage and grafting efficiency of chemical method was obviously higher than that of microwave method.Saving time and energy with microwave methods preparation.

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