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首页> 外文期刊>Journal of Applied Polymer Science >Kinetic Study on Free Radical Grafting of Polyethylene with Acrylic Acid by Reactive Extrusion
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Kinetic Study on Free Radical Grafting of Polyethylene with Acrylic Acid by Reactive Extrusion

机译：反应挤出法聚乙烯与丙烯酸自由基接枝的动力学研究

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In the reactive extrusion process for the free radical grafting of acid monomers onto polyethylene, monomer grafting and homopolymerization occur simultaneously and interact with each other. Using an incremental theory, mathematical models of conversions for monomer grafting and homopolymerization were separately constructed to predict the grafting degree, mass of homopolymer and grafting efficiency. Effects of the barrel temperature, initial monomer and initiator concentrations on grafting behaviors were investigated. The barrel temperature and initial monomer concentration were shown to be the main process parameters for controlling the grafting degree. The grafting degree and mass of homopolymer increased significantly with increasing barrel temperature and monomer concentration and increased marginally with increasing initiator concentration. No significant improvement in the grafting efficiency was observed. The predictions of the models are in good agreement with experimental data. VC 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40990.
机译：在用于将酸性单体自由基接枝到聚乙烯上的反应挤出工艺中，单体接枝和均聚同时发生并且彼此相互作用。使用增量理论，分别构建了单体接枝和均聚转化率的数学模型，以预测接枝度，均聚物质量和接枝效率。研究了料筒温度，初始单体和引发剂浓度对接枝行为的影响。机筒温度和单体初始浓度是控制接枝度的主要工艺参数。均聚物的接枝度和质量随着料筒温度和单体浓度的增加而显着增加，而随着引发剂浓度的增加而略有增加。没有观察到接枝效率的显着改善。模型的预测与实验数据吻合良好。 VC 2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2014，131，40990。

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