Gel-sol transition of methylcellulose
Gel-sol transition of methylcellulose
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DOI：
10.1002/macp.1997.021980423
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发表时间：
1997-04-01
影响因子：
2.5
通讯作者：
Nishinari, N
中科院分区：
文献类型：
--
作者：
Nishinari, K;Hofmann, KE;Nishinari, N
用小变形振荡流变仪和差示扫描量热法(DSC)研究了不同相对分子质量的甲基纤维素(MC)水溶液的凝胶机理。MC相对分子质量的增加促进了凝胶的形成：弹性模数变大，凝胶在较低温度下发生凝胶，凝胶-溶胶转变过程中的DSC峰变得更加尖锐。冷却的DSC曲线分成两个峰，表明凝胶到溶胶的转变是通过两个步骤发生的。
The gelation mechanism of aqueous solutions of methylcellulose (MC) with different molecular weights was studied by small deformation oscillation rheological measurments and differential scanning calorimetry (DSC). The gelation is promoted by the increase in molecular weight of MC: the elastic modulus becomes larger, the gelation occurs at lower temperatures and the DSC peaks accompanying the gel-sol transition become sharper. Cooling DSC curves split into two peaks, indicating that the gel-to-sol transition occurred via two steps.