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首页> 外文期刊>Journal of Applied Polymer Science >Nonisothermal Crystallization of Isotactic Polypropylene Blended with Poly(#alpha#-pinene).I.Bulk Crystallization
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Nonisothermal Crystallization of Isotactic Polypropylene Blended with Poly(#alpha#-pinene).I.Bulk Crystallization

机译：等规聚丙烯与聚（＃alpha＃-pine烯）共混的非等温结晶.I。本体结晶

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摘要

The influence f a natural terpene resin Poly(#alpha#-pinene),on the nonisothetmal crystallization process of isotactic polypropylene(iPP) was investigated.The solidification process strongly depends on cooling rate.composition ,and investigated.The solidification process strongly depends on cooling rate .composition,and miscibiliby of the system .For the blends containing P_(#alpha#) P up to 30 wt % ,the overall nonisothermal crystallization rate is depressed with respect to plain ipp.This is probably the result of the diluting effect f the polyterpene because the two components are miscible.The 50/50 blend presents,instead,two amorphous phases:an Ipp-rich phase and a P_(#alpha#) P-rich phase.For this composition .solidification starts at temperatures higher than those for plain Ipp ad blends with lower P_(#alpha#) P content ,given that the diluting effect of P_(#alpha#) P in the Ipp-rich phase is counterweighted by an increased number f nuclei that originate from the polyterpene-rich phase domains. P_(#alpha#) P also influences the morphology of iPP spherulites,which are spherical in plain iPP and become more irregular with increasing P_(#alpha#) P content.The number and dimension of Ipp spherulites depend on blend composition and miscibility of the components.Moreover,the nonisothermal crystallization kinetics of iPP/ P_(#alpha#) P blends was analyzed with the Ozawa equation
机译：研究了天然萜烯树脂聚（＃alpha＃-pine烯）对全同立构聚丙烯（iPP）非等价结晶过程的影响。固化过程主要取决于冷却速率，组成，并进行研究。固化过程主要取决于冷却速率，组成和系统易混溶性。对于P _（＃alpha＃）P含量不超过30 wt％的共混物，相对于纯ipp，总的非等温结晶速率会降低。这可能是稀释效应f的结果。 50/50共混物呈现两个无定形相：富含Ipp的相和富含P _（＃alpha＃）的P的相。对于这种组成，固化在高于200℃的温度下开始。鉴于P _（＃alpha＃）P含量较低的普通Ipp广告掺和物的质量，前提是富含Ipp的相中P _（＃alpha＃）P的稀释作用被源自多萜的f核数目增加所抵消。有钱相域。 P _（＃alpha＃）P也影响iPP球晶的形貌，iPP球晶在普通iPP中呈球形，随着P _（＃alpha＃）P含量的增加而变得更加不规则。Ipp球晶的数量和尺寸取决于共混物的组成和相混性。此外，用Ozawa方程分析了iPP / P _（＃alpha＃）P共混物的非等温结晶动力学。

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