Colloid and Polymer Science

, Volume 271, Issue 4, pp 311–321

Cellulose-poly(vinyl pyrrolidone) blends studied by scanning electron microscopy and dynamic mechanical measurements

  • M. Paillet
  • J. Y. Cavaillé
  • J. Desbrières
  • D. Dupeyre
  • A. Péguy
Original Contributions

DOI: 10.1007/BF00657413

Cite this article as:
Paillet, M., Cavaillé, J.Y., Desbrières, J. et al. Colloid Polym Sci (1993) 271: 311. doi:10.1007/BF00657413

Abstract

New polymer blends based on cellulose and poly(vinyl pyrrolidone) (PVP) were obtained using a mixture of N=methyl morpholine N-oxide (NMMO) and dimethylsulfoxide (DMSO) as a common solvent system. Materials are obtained after the removing of NMMO-DMSO in three of their different solvents, namely i) H2O, ii) a mixture 95/5 vol/vol hexamethyl phosphororri amide (HMPA) DMSO and iii) a mixture of 95/5 vol/vol dioxan/water.

Scanning electron microscopy techniques were extensively used and lead to the conclusion that all these blends in the composition range 25/75 w/w to 75/25 w/w cellulose/PVP are two-phase systems in which cellulose forms a continuous phase. Preliminary results from calorimetric and dynamic mechanical measurements confirm these observations. Furrthermore, it is shown that using dioxanwater preserves the initial cellulose PVP composition, allowing to get blends with the desired PVP fraction. Although it is not the case with HMPA/DMSO which dissolves a part of PVP, its use leads to assymmetric, porous structures.

Key words

Cellulose poly(vinyl pyrrolidone) polymer blend scanning electron microscopy dynamic mechanical analysis 

Copyright information

© Steinkopff-Verlag 1993

Authors and Affiliations

  • M. Paillet
    • 1
  • J. Y. Cavaillé
    • 1
  • J. Desbrières
    • 1
  • D. Dupeyre
    • 1
  • A. Péguy
    • 1
  1. 1.Centre de Recherche sur les Macromolécules VégétalesGrenoble cedexFrance

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