等规聚丙烯球晶的扫描电子显微镜观察

<正> 关于等规聚丙烯球晶的结构,已由Padden和Keith用电镜作了详细的观察。但是从透射电镜所得的照片是一个平面图象,对于了解球晶的整体结构,需要作适当的推论。扫描电镜的优点是能够得出景深较好的图象,立体感较强,缺点是只能反映样品外表的形态,要得到能显示内部结构的照片,则需要蚀刻,一般说要准确掌握这些技术比较困难,因此这方面的工作不多。

SCANNING ELECTRON MICROSCOPIC EXAMINATION OF i-POLYPROPYLENE SPHERULITES

The scanning electron microscopic examination of α and β i-polypropylene was carried out after the samples were subjected to electron beam bombardment in the instrument for 1 to 2 minutes. This technique gives pictures of α and β-spherulite of i-polypropylene with better depth of field, especially when the samples are prepared in the presence of paraffin oil.