聚丙烯/BA原位聚合改性MMT纳米复合材料的微观结构

Micro-structure of Nano-composites of Polypropylene Montmorillonite Modified by in-situ Polymerization of Butyl Acrylate

通过原位聚合制备了聚丙烯酸丁酯 (PBA)改性蒙脱土 (MMT) ,再与PP熔融复合 ,制成PP/MMT复合材料 ,利用X射线衍射 (XRD)、扫描电子显微镜 (SEM)和电子探针表征了复合材料的微观结构。结果表明 :PP/MMT复合材料为纳米复合材料 ,MMT的加入诱导了 β -晶型PP的形成。

Polypropylene (PP)/ montmorillonite (MMT) nano-composites were prepared by mechanical melting blending, in which MMT was firstly organized by quaternary ammonium salt, then modified by in-situ polymerization of butyl acrylate (BA). The micro-structure of the prepared composite was characterized by X-ray diffraction (SAXD), scanning electronic microscopy and electron probe. The results showed that the prepared PP/MMT composites were nano-composites, MMT uniformly dispersed in PP-matrix, and the addition of modified MMT induced the formation of β-form PP crystals.