Polymer Bulletin

, Volume 31, Issue 3, pp 285–291 | Cite as

Synthesis and characterization of copolymers of styrene andN-methylolacrylamide

  • J. B. Frias
  • F. J. Lopez
  • N. Alonso
  • E. Mendizabal
  • J. E. Puig
Article

Abstract

Copolymers of styrene (ST) and N-methylolacrylamide (NMA) were synthesized by emulsion polymerization for different initial weight ratios of ST/NMA. Fast reaction rates and high conversions are achieved regardless of the ST/NMA ratio. NMA content in copolymers, as deduced by DSC, FTIR and Kjeldhal analysis, is higher as the initial ST/NMA ratio decreases. Glass transition temperature of copolymers increases as the ST/NMA ratio decreases and it decreases with reaction time for a fixed ST/NMA ratio. The latter results and FTIR spectra as well as Kjeldhal analysis as a function of reaction time indicate that NMA reacts initially in the aqueous phase, after which ST, because of its overall larger concentration, is incorporated preferentially in the polymer.

Keywords

Polymer Reaction Time Transition Temperature FTIR Spectrum Aqueous Phase 

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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • J. B. Frias
    • 1
  • F. J. Lopez
    • 1
  • N. Alonso
    • 1
  • E. Mendizabal
    • 1
  • J. E. Puig
    • 1
  1. 1.Facultad de Ciencias QuimicasUniversidad de GuadalajaraGuadalajaraMexico

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