Swelling Kinetics of Layered Structures: Triblock Copolymer Mesogels

C. M. Chen, F. C. Mackintosh, D. R.M. Williams

研究成果: 雜誌貢獻期刊論文同行評審

4 引文 斯高帕斯(Scopus)

摘要

We consider the swelling kinetics of layered structures. We focus on the case of triblock copolymer mesogels, although our results are applicable to other layered structures including clays. We assume the mesogels are swollen by a solvent that is good for the bridging block but poor for the nonbridging block. At long times the penetration front movss as in ordinary diffusion, i.e., as t1/2. At short times, however, the bending elasticity of the nonbridging layers becomes important. This bending elasticity leads to a tV6 relaxation of the penetration front at early times. The crossover length between these two regimes is approximately the width of a single layer. However, for a large number of lamellae there is a cooperative effect which leads to a large enhancement of this crossover length.

原文英語
頁(從 - 到)2471-2475
頁數5
期刊Langmuir
11
發行號7
DOIs
出版狀態已發佈 - 1995 七月 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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