On the phase diagram of the system hydroxypropylcellulose-water |
| |
| Authors: | H. Fischer M. Murray A. Keller J. A. Odell |
| |
| Affiliation: | (1) H.H. Wills Physics Laboratory, University of Bristol, BS8 1TL Bristol, UK;(2) School of Chemistry, University of Bristol, BS8 1TL Bristol, UK;(3) Present address: Centre for Polymers and Composites, Technical University of Eindhoven, 5600 MB Eindhoven, The Netherlands |
| |
| 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. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
