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首页> 外文期刊>Polymers & Polymer Composites >Modification of Sodium Salt of Partially Carboxymethylated Guar Gum by Graft Copolymerization with Methyl Acrylate
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Modification of Sodium Salt of Partially Carboxymethylated Guar Gum by Graft Copolymerization with Methyl Acrylate

机译：丙烯酸甲酯接枝共聚合改性部分羧甲基化瓜尔胶的钠盐

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摘要

Grafting of methyl acrylate onto sodium salt of partially Carboxymethylated guar gum (backbone) was carried out using eerie ammonium nitrate as a redox initiator in an aqueous medium.The reaction variables including concentrations of initiator,nitric acid,monomer and amount of the backbone as well as time and temperature were varied for establishing the optimized reaction conditions for grafting.The influence of these reaction parameters on the grafting yields and the rates of polymerization,graft copolymerization and homopolymerization was also studied and the results were discussed.The kinetic scheme of free radical graft copolymerization was proposed and the experimental results were found to agree very well with the proposed kinetic scheme.The graft copolymer sample was characterized by IR-spectroscopic,thermal and scanning electron microscopic techniques.
机译：在水介质中，用硝酸氨基甲酸铵作为氧化还原引发剂，将丙烯酸甲酯接枝到部分羧甲基化的瓜尔豆胶（骨干）的钠盐上，反应变量包括引发剂的浓度，硝酸，单体和主链的量。随时间和温度的变化建立最佳的接枝反应条件。研究了这些反应参数对接枝率，接枝率，聚合率，接枝共聚率和均聚率的影响，并讨论了结果。提出了接枝共聚的方法，实验结果与所提出的动力学方案非常吻合。用红外光谱，热学和扫描电子显微镜技术对接枝共聚物样品进行了表征。

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