Electric birefringence measurements of native, denatured, and renatured xanthan

Gregory J. Besio, Ian M. Leavesley, Robert Krafft Prud'homme, Raymond Farinato

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

Electric birefringence measurements were performed on three xanthan solutions to determine conformational differences between native xanthan, denatured xanthan (heated in 4 M urea to 90°C and cooled), and renatured xanthan (heated and cooled). The birefringence of samples exposed to pulses of 1000 V for 1 ms were analyzed to determine longest relaxation times and steady‐state birefringence. The results showed the following order for steady state birefringence, native > renatured > denatured, and longest relaxation time, renatured > native > denatured. The results are interpreted in terms of helix reformation and aggregation upon renaturing.

Original languageEnglish (US)
Pages (from-to)825-834
Number of pages10
JournalJournal of Applied Polymer Science
Volume33
Issue number3
DOIs
StatePublished - Jan 1 1987

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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