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首页> 外文期刊>Journal of Applied Polymer Science >Kinetics and mechanism of free radical crafting of methyl acrylate onto sago starch
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Kinetics and mechanism of free radical crafting of methyl acrylate onto sago starch

机译：西米淀粉自由基合成丙烯酸甲酯的动力学及机理

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The graft, copolymerization was carried out by methyl acrylate with sage starch in which eerie ammonium nitrate was used as an initiator. It has been found that the rates of graft polymerization and grafting efficiency were dependent upon the concentration of eerie ammonium nitrate (CAN), methyl acrylate (MA), sage starch (AGU, anhydro glucose unit), mineral acid (H2SO4), and as well as reaction temperature and period. A rate equation of polymerization was established from the proposed reaction mechanism, and the rate of polymerization (R-p) was the first-order dependence of the MA monomer concentration and square root of the CAN concentration. A new kinetic model of the grafting reaction has been proposed, and a normal kinetics of methyl acrylate polymerization was observed. An equation of a predicted model relating the graft fraction of poly(methyl acrylate) with the sage starch has been derived, and validity of the predicted model was verified by the experimental results. (C) 2000 John Wiley & Sons, Inc. [References: 9]
机译：通过丙烯酸甲酯与鼠尾草淀粉进行接枝共聚，其中鼠尾草硝酸铵用作引发剂。已经发现，接枝聚合的速率和接枝效率取决于令人毛骨悚然的硝酸铵（CAN），丙烯酸甲酯（MA），鼠尾草淀粉（AGU，脱水葡萄糖单元），无机酸（H2SO4）的浓度以及以及反应温度和时间。由提出的反应机理建立了聚合反应速率方程，聚合反应速率（R-p）是MA单体浓度和CAN浓度平方根的一阶依赖性。提出了一种新的接枝反应动力学模型，并观察到丙烯酸甲酯聚合反应的正常动力学。推导了聚丙烯酸甲酯接枝率与鼠尾草淀粉的预测模型方程，并通过实验结果验证了该模型的有效性。 （C）2000 John Wiley＆Sons，Inc. [参考：9]

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