Marega Carla, Causin Valerio, Marigo Antonio, Saini Roberta, Ferrara Giuseppe
Dipartimento di Scienze Chimiche, Università di Padova, INSTM Research Unit, via Marzolo 1, 35131 Padova, Italy.
J Nanosci Nanotechnol. 2010 May;10(5):3078-84. doi: 10.1166/jnn.2010.2184.
Nanocomposites based on a copolymer of 1-butene and ethylene filled with montmorillonite (Cloisite 15A) were studied, obtaining for the first time crystallization from the melt directly into phase I. The polymorphism of the polymer and the dispersion of the filler in the matrix were investigated. The effect of the compatibilizer (PB-g-MA) on these properties was also singled out. The dramatic increase in the rate of the II --> I phase transition due to montmorillonite was attributed to the alteration in the phase stability diagram of the matrix, due to the introduction of defects and to induction of local pressure on the crystalline domains.
研究了基于1-丁烯与乙烯的共聚物并填充蒙脱石（Cloisite 15A）的纳米复合材料，首次实现了从熔体直接结晶为I相。研究了聚合物的多晶型性以及填料在基体中的分散情况。还单独研究了增容剂（PB-g-MA）对这些性能的影响。蒙脱石导致的II→I相变速率的显著增加归因于基体相稳定性图的改变，这是由于引入了缺陷以及对晶区施加了局部压力。
