Dilute solution properties, chain stiffness, and liquid crystalline properties of cellulose propionate

G. A. Casay, A. George, Nikolaos Hadjichristidis, J. S. Lindner, J. W. Mays*, D. G. Peiffer, W. W. Wilson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The solution properties of cellulose derivatives are of interest from both technological and purely scientific aspects. At high concentrations these solutions form liquid crystalline structures. In dilute solution cellulosic chains can be described as semiflexible or wormlike with properties intermediate between random coils and rigid rods. A series of fractions of cellulose propionate have been examined by dilute solution viscometry, static and dynamic light scattering, and polarizing microscopy. Power law exponents are considerably larger than those observed for flexible chains and analysis of the intrinsic viscosity and hydrodynamic radii has yielded chain diameters and Kuhn statistical segment lengths. Corresponding aspect ratios from the hydrodynamic measurements are in good agreement with those obtained from polarizing microscopy, as analyzed in light of Flory's theory. Some aggregation and specific solvent effects have been observed, however separation of these effects has proven to be difficult. Results of these studies are compared to previous work for other cellulose derivatives. ©1995 John Wiley & Sons, Inc.

Original languageEnglish (US)
Pages (from-to)1537-1544
Number of pages8
JournalJournal of Polymer Science Part B: Polymer Physics
Volume33
Issue number10
DOIs
StatePublished - Jan 1 1995

Keywords

  • cellulose propionate
  • light scattering
  • liquid crystals
  • solution properties
  • viscometry

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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