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首页> 外文期刊>Journal of Applied Polymer Science >ROLE OF REACTION TIME IN BATCH PROCESS MODIFICATION OF ATACTIC POLYPROPYLENE BY MALEIC ANHYDRIDE IN MELT
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ROLE OF REACTION TIME IN BATCH PROCESS MODIFICATION OF ATACTIC POLYPROPYLENE BY MALEIC ANHYDRIDE IN MELT

机译：反应时间在熔体中马来酸酐修饰无规聚丙烯工艺过程中的作用

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摘要

Following our studies on chemical modification proceses of polypropylenes by maleic anhydride, some new experimental works are shown here that check the possibilities of processing atactic polypropylene in the melt by a batch process. A modified polymer that is supposed to be useful as an interfacial agent if used in heterogeneous systems based on polypropylene is also clearly obtained. The favorable effect of the nonstereoregularity of the polymer can be noted. This polymer has a higher level of modification than the stereoregular polymer (isotactic polypropylene), despite the lower processing temperature used that causes a decrease in the initiator activity. Otherwise, this article deals with the role played by the reaction time during the process. A mechanism of chemisorption and some considerations about the fractal nature of the reaction kinetics are proposed to explain the results obtained. (C) 1997 John Wiley & Sons, Inc. [References: 42]
机译：在我们对马来酸酐对聚丙烯进行化学改性的研究之后，此处显示了一些新的实验工作，这些工作检查了通过间歇方法在熔体中加工无规聚丙烯的可能性。如果在基于聚丙烯的非均相体系中使用，则还可以得到被认为可以用作界面剂的改性聚合物。可以注意到聚合物的非立体规则性的有利效果。尽管使用较低的加工温度会导致引发剂活性降低，但该聚合物的改性水平仍高于立体规则聚合物（全同立构聚丙烯）。否则，本文将讨论过程中反应时间所起的作用。提出了化学吸附的机理以及对反应动力学的分形性质的一些考虑，以解释所获得的结果。 （C）1997 John Wiley＆Sons，Inc. [参考：42]

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