Roy Cédric, Budtova Tatiana, Navard Patrick
Ecole des Mines de Paris, Centre de Mise en Forme des Matériaux, UMR CNRS/Ecole des Mines No 7635, BP 207, 06904 Sophia-Antipolis, France.
Biomacromolecules. 2003 Mar-Apr;4(2):259-64. doi: 10.1021/bm020100s.
The shear rheology of a microcrystalline cellulose dissolved in a 9% NaOH aqueous solution was studied in the steady and oscillatory modes. The cellulose-(9% NaOH-H(2)O) mixtures show not to be true solutions. In the dilute regime, with cellulose concentration below 1%, the rheological behavior is typical of the one of suspensions. The formation of cellulose aggregates is favored when temperature is increased. In the semidilute regime, an irreversible aggregate-based gelation occurs, being faster with increasing temperature.
研究了溶解在9%氢氧化钠水溶液中的微晶纤维素在稳态和振荡模式下的剪切流变学。纤维素-（9%氢氧化钠-水）混合物并非真正的溶液。在稀溶液体系中，纤维素浓度低于1%时，流变行为是典型的悬浮液流变行为。温度升高有利于纤维素聚集体的形成。在半稀溶液体系中，会发生基于聚集体的不可逆凝胶化，且随着温度升高速度加快。
