DIPOLE-MOMENTS OF STYRENE/4-VINYLPYRIDINE COPOLYMERS .2. RELATION TO MICROSTRUCTURE

YILMAZ E., KUCUKYAVUZ Z.

POLYMER INTERNATIONAL, vol.33, no.4, pp.353-357, 1994 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 33 Issue: 4
  • Publication Date: 1994
  • Doi Number: 10.1002/pi.1994.210330402
  • Journal Name: POLYMER INTERNATIONAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.353-357
  • Middle East Technical University Affiliated: No

Abstract

Mean-square dipole moment values of styrene/4-vinylpyridine (S4VP) copolymers determined at 25-60-degrees-C in 1,4-dioxane solutions were related to the microstructure of the chains. Data on the synthesis and dipole moments of S4VP copolymers were used to calculate the distribution of triad fractions and effective dipole moments of styrene, S-centred, and 4-vinylpyridine, V-centred, fractions in the copolymer chains. The relative magnitudes of the effective dipole moment values calculated for each type of triad reflect the effect of dipole-dipole interactions on these values.