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On the phase diagram of the system hydroxypropylcellulose-water

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Abstract

The phase diagram of the system hydroxypropylcellulose (HPC)-H2O has been investigated using differential scanning calorimetry (DSC), X-ray diffraction, optical microscopy and1H (NMR) nuclear magnetic resonance spectroscopy. A peritectic line at higher temperatures has been found similar to the lytropic systems described before. This phase transition, from a solution consisting of solvate aggregates and free solvent, into a crystal solvate-isotropic phase system is completely reversible. The formation of crystal solvate phases is independent of the water content of the system until the system transforms into a thermotropic system. The solvent molecules are strongly associated with the macromolecules.

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Author notes

  1. H. Fischer

    Present address: Centre for Polymers and Composites, Technical University of Eindhoven, 5600, MB Eindhoven, The Netherlands

Authors and Affiliations

  1. H.H. Wills Physics Laboratory, University of Bristol, BS8 1TL, Bristol, UK

    H. Fischer, M. Murray, A. Keller & J. A. Odell

  2. School of Chemistry, University of Bristol, BS8 1TL, Bristol, UK

    M. Murray

Authors
  1. H. Fischer
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  2. M. Murray
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  3. A. Keller
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  4. J. A. Odell
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Fischer, H., Murray, M., Keller, A. et al. On the phase diagram of the system hydroxypropylcellulose-water. J Mater Sci 30, 4623–4627 (1995). https://doi.org/10.1007/BF01153071

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  • DOI: https://doi.org/10.1007/BF01153071

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