The Structure of Grafted Polystyrene Layers in a Range of Matrix Polymers

C. J. Clarke*, R. A L Jones, J. L. Edwards, K. R. Shull, J. Penfold

*Corresponding author for this work

Research output: Contribution to journalArticle

61 Scopus citations

Abstract

We have used neutron reflectivity to measure concentration profiles of brushes of grafted chains in the melt. A method has been developed for permanently grafting end-functionalized polymers to a silicon substrate. By changing the matrix polymer surrounding the brush, we have investigated how the conformation of the brush depends upon the interaction between the matrix and brush polymers. We have observed strong stretching of the brush chains when the matrix and brush interact favorably, and collapse of the brush onto the substrate when they are immiscible. Comparisons have been made with theoretical predictions for the height and width of the brush, and experimental profiles have been compared with numerical self-consistent field theory.

Original languageEnglish (US)
Pages (from-to)2042-2049
Number of pages8
JournalMacromolecules
Volume28
Issue number6
DOIs
StatePublished - Nov 1 1995

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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    Clarke, C. J., Jones, R. A. L., Edwards, J. L., Shull, K. R., & Penfold, J. (1995). The Structure of Grafted Polystyrene Layers in a Range of Matrix Polymers. Macromolecules, 28(6), 2042-2049. https://doi.org/10.1021/ma00110a043