Journal
RHEOLOGICA ACTA
Volume 45, Issue 4, Pages 468-473Publisher
SPRINGER
DOI: 10.1007/s00397-005-0075-x
Keywords
rheology; phase transition; hydroxypropylcellulose; precipitation; thermoreversible gelation
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The thermoreversiblegelation of hydroxypropylcellulose (HPC)/water solutions is investigated by means of rheological and optical techniques. The linear viscoelasticity of solutions at different concentrations is measured during heating ramps from room temperature. The experimental results suggest that the solution microstructure changes according to two sequential steps, i.e., precipitation and gelation. Temperature, temperature rate of change, and concentration are found to be relevant parameters controlling the phase transition.
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