Glass transition behavior of PS films on grafted PS substrates

Hoyeon Lee, Hyungju Ahn, Sudhakar Naidu, Baek Seok Seong, Du Yeol Ryu, David M. Trombly, Venkat Ganesan

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We present experimental results for the glass transition behavior of polystyrene (PS) films on grafted PS layers of the same chemical identity as a function of film thickness. Our results suggest that the Tg of PS films on brush substrates decreases with decreasing film thickness. The thickness dependence of Tg was observed to be more pronounced for the films on the shorter brushes with the high grafting density. We propose a qualitative rationalization of the observations by invoking both interfacial energy considerations as well as by adapting the percolation model for the glass transition of polymer films.

Original languageEnglish
Pages (from-to)9892-9898
Number of pages7
JournalMacromolecules
Volume43
Issue number23
DOIs
Publication statusPublished - 2010 Dec 14

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Polystyrenes
Glass transition
Brushes
Film thickness
Substrates
Interfacial energy
Polymer films

All Science Journal Classification (ASJC) codes

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

Cite this

Lee, H., Ahn, H., Naidu, S., Seong, B. S., Ryu, D. Y., Trombly, D. M., & Ganesan, V. (2010). Glass transition behavior of PS films on grafted PS substrates. Macromolecules, 43(23), 9892-9898. https://doi.org/10.1021/ma101743u
Lee, Hoyeon ; Ahn, Hyungju ; Naidu, Sudhakar ; Seong, Baek Seok ; Ryu, Du Yeol ; Trombly, David M. ; Ganesan, Venkat. / Glass transition behavior of PS films on grafted PS substrates. In: Macromolecules. 2010 ; Vol. 43, No. 23. pp. 9892-9898.
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Lee, H, Ahn, H, Naidu, S, Seong, BS, Ryu, DY, Trombly, DM & Ganesan, V 2010, 'Glass transition behavior of PS films on grafted PS substrates', Macromolecules, vol. 43, no. 23, pp. 9892-9898. https://doi.org/10.1021/ma101743u

Glass transition behavior of PS films on grafted PS substrates. / Lee, Hoyeon; Ahn, Hyungju; Naidu, Sudhakar; Seong, Baek Seok; Ryu, Du Yeol; Trombly, David M.; Ganesan, Venkat.

In: Macromolecules, Vol. 43, No. 23, 14.12.2010, p. 9892-9898.

Research output: Contribution to journalArticle

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Lee H, Ahn H, Naidu S, Seong BS, Ryu DY, Trombly DM et al. Glass transition behavior of PS films on grafted PS substrates. Macromolecules. 2010 Dec 14;43(23):9892-9898. https://doi.org/10.1021/ma101743u