Quasi-Equilibrium Gelation Temperature of Aqueous Methylcellulose
Source abstract
Abstract
Aqueous methylcellulose (MC) forms hydrogel upon heating and the gel dissolves upon cooling i.e. thermo-reversible gelation. However, the values of the gelation temperature differ depending on the sources of MC samples and on the methods of determination as well. In this study, we have obtained a lower limit of the gelation temperature for a specific MC below which aqueous MC does not form the gel, by dually extrapolating the holding time for gelation to infinite and the mechanical probing force to zero. The gelation temperature obtained in this manner decreased with increasing concentration of the MC; to cite a case, it was located at ca. 21 ̊C for 10 wt%, which is ca. 10 ̊C lower than a conditional value estimated after holding 1 h without these dual extrapolations.
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Research context
OpenAlex topics: Hydrogels: synthesis, properties, applications · Polysaccharides Composition and Applications · Advanced Cellulose Research Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute for Chemical Research, Kyoto University
Institute of Materials Structure Science, High Energy Accelerator Research Organization
References (34)
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