西南石油大学学报(自然科学版) ›› 2006, Vol. 28 ›› Issue (1): 65-67.DOI: 10.3863/j.issn.1000-2634.2006.01.018

• 油气化学工程与化工 • Previous Articles     Next Articles

STUDY OF DEHYDRATION MECHANISM OF SEC-ONDARY CROSS-LINKED GELS

LUO Xian-bo1 PU Wan-fen3 WU Hai-yan2 et al.

  

  1. (Southwest Petroleum Institute, Chengdu Si-chuan 610500, China)
  • Received:2004-12-19 Revised:1900-01-01 Online:2006-02-20 Published:2006-02-20
  • Contact: LUO Xian-bo

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Abstract: In this paper, the microcosmic characteristic of performed gels and secondary cross-linked gels with the same concentra-lion has been studied场atomic force microscopy(AFM).By comparing the images of performed gels with those of secondary cross-linked gels , results indicated that the microstructure of
secondary cross-linked gels presented thick network in which very small holes and bigger irregularly holes were embedded. The width of the biggest irregularly holes was 200 nm. The experimental results were analyzed , and the formation mechanism of bigger irFegularly holes and the mechanism of easier dehydralion has been discussed.

Key words: secondary cross-linked gels, prefonned gels, polyacry lamide, microstructure, atomic force microscopy

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