Segmental dynamics of poly(methyl acrylate)-d3 adsorbed on anopore: A deuterium NMR study

Macduff O. Okuom, Burak Metin, Frank D. Blum

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


The segmental dynamics of poly(methyl acrylate-d3) (PMA-d 3) adsorbed in the pores of anopore membranes has been investigated using deuterium NMR over the temperature range 25-80 °C. The onset of the NMR glass-transition temperature (Tg) for the adsorbed samples was approximately 15 °C higher than that for the bulk sample. The adsorbed polymer contained segments with restricted mobility (glassy), even at the highest temperatures studied, at which the bulk polymer showed only mobile segments. The spectra from samples with different adsorbed amounts of PMA-d 3, between 1.1 and 4.2 mg/m2, were similar in their temperature-dependent mobilities. Neither was there much difference in the spectra of PMA-d3 on anopore samples with pore sizes of 0.2 and 0.02 μm. However, for a solvent-washed sample with an adsorbed amount of 0.7 mg/m2, additional restriction in PMA-d3 mobility was observed.

Original languageEnglish (US)
Pages (from-to)2539-2544
Number of pages6
Issue number6
StatePublished - Mar 18 2008
Externally publishedYes

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry


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