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首页> 外文期刊>Journal of Applied Polymer Science >Crystallization and melting behaviors of maleated polyethylene and its composite with fibrous cellulose
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Crystallization and melting behaviors of maleated polyethylene and its composite with fibrous cellulose

机译：马来酸化聚乙烯及其与纤维状纤维素复合材料的结晶和熔融行为

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The crystallization and melting behaviors of maleated polyethylene (MPE) and its composite with fibrous crystalline cellulose are investigated by differential scanning calorimetry. MPE exhibits a higher crystallization starting temperature, because of the interactions between maleic anhydride (MA) groups for nucleation, and lower melting and crystallization enthalpies, because of the intensive irregularity of MPE chains compared to unmaleated PE (UPE). Fibrous cellulose (FC) slightly facilitates the nucleation of MPE but causes no change in the transition enthalpies of MPE for crystallization and melting in UPE-FC and MPE-FC composites. The kinetics of crystallization show that the Avrami exponent depends on the content of MA groups and FC to a small extent and the activation energy is largely determined by the MA content, suggesting the irregularity and decreased mobility of MPE chains that is due to the interactions between the grafted MA groups in MPE and the FC composite. (C) 2003 Wiley Periodicals, Inc. [References: 30]
机译：通过差示扫描量热法研究了马来酸化聚乙烯（MPE）及其与纤维状结晶纤维素的复合物的结晶和熔融行为。 MPE表现出较高的结晶起始温度，这是因为与未马来酸化的PE（UPE）相比，MPE链的强烈不规则性是由于马来酸酐（MA）基团之间的相互作用用于成核，以及熔融和结晶焓较低。纤维状纤维素（FC）略微促进了MPE的成核，但在UPE-FC和MPE-FC复合材料的结晶和熔融过程中，MPE的过渡焓没有变化。结晶动力学表明，Avrami指数在较小程度上取决于MA基团和FC的含量，活化能主要由MA含量决定，这表明MPE链之间的相互作用会导致MPE链的不规则性和迁移率降低MPE和FC复合材料中的MA接枝基团。 （C）2003 Wiley Periodicals，Inc. [参考：30]

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