Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7782947 | Carbohydrate Polymers | 2018 | 22 Pages |
Abstract
Gelation of methylcellulose aqueous solution was investigated by a high-pressure viscosity measurement device which consisted of diamond anvil cell, microscope and CCD. And the temperature and pressure dependence of the viscosity of methylcellulose aqueous solution was measured utilizing a rolling-ball technique. The results showed that sol-gel thermal transition of methylcellulose solution occurred at the temperature of 53â¯Â°C under atmospheric pressure. Upon compression, it was indicated that the viscosity showed a dramatic change in the vicinity of the pressure of 500â¯MPa. Parabolic phase diagram of methylcellulose aqueous solution was constructed, and it showed that the melting point was an increasing function of pressure at the first stage and an decreasing function of pressure at the final stage. The mechanism of sol-gel transformation of methylcellulose aqueous solutions was also discussed, it might be assumed that both hydrogen and hydrophobic bonds were involved with the gel formation in the case of methylcellulose aqueous solution.
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Authors
Zheng Wang, Kun Yang, Haining Li, Chaosheng Yuan, Xiang Zhu, Haijun Huang, Yongqiang Wang, Lei Su, Katsuyoshi Nishinari, Yapeng Fang,