物理化学学报 >> 1991, Vol. 7 >> Issue (05): 605-608.doi: 10.3866/PKU.WHXB19910518

研究简报 上一篇    下一篇

等离子体处理云母粉对其表面特性及对其与聚合物界面特性的影响

宫晓颐; 黄玉惠; 丛广民   

  1. 中国科学院广州化学研究所,广州 510650
  • 收稿日期:1990-04-05 修回日期:1990-07-15 发布日期:1991-10-15
  • 通讯作者: 宫晓颐

The Effect of Plasma Treatment of Mica Powder on its Surface Characteristics and Interface Behavior with Linear Macromolecules

Gong Xiao-Yi; Huang Yu-Hui; Cong Guang-Min   

  1. Guangzhou Institute of Chemistry, Academia Sinica, Guangzhou 510650
  • Received:1990-04-05 Revised:1990-07-15 Published:1991-10-15
  • Contact: Gong Xiao-Yi

关键词: 等离子体, 表面, 界面, 填料

Abstract: In this work mica powder was treated with n-butyl aldehyde plasma of radio frequency. Then the apparent contact angle of different liquids on the powder was determined by measuring the penetration rate of the liquid through the packed powder. The surface tension of mica powder and interface tension between the powder and typical linear macromolecules were calculated from the data of contact angle obtained under Fowkes' assumption. Rationalized conclusions were as follows: (i) For polar liquids, wetting of treated mica is more difficult than the untreated one and for nonpolar liquids, no difference has been observed. (ii) The surface tension of mica powder drops from 41.34 (N·m~(-1)·10~(-3)) to 31.51 after 5 min plasma treatment and to 25.59 (N·m~(-1)·10~(-3)) after 30 min plasma treatment. (iii) The polar component of interface tension between the mica powder and any linear macromolecule monotonically decreases with the time of plasma treating. However, the whole interface tension changes after plasma treatment, depending on the polymer used.

Key words: n-butyl aldehyde plasma, Surface, Interface, Fillers