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Rheology Behavior of Cellulose/NMMO/Water Solution |
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| Authors: | Gu GuangxinState Key Laboratory for Modification of Chemical Fibers and Polymer Materials Dong Hua University Shanghai Hu SaizhuScience and Technology Commission of Shanghai Municipality Shanghai Shao Huili Sheng Yiyi Hu XuechaoState Key Laboratory for Modification of Chemical Fibers and Polymer Materials Dong Hua University Shanghai |
| Institution: | 1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Dong Hua University, Shanghai 20051 2. Science and Technology Commission of Shanghai Municipality, Shanghai 200003 |
| Abstract: | Rheology properties of cellulose/NMMO/water solution are important parameters for spinning. The storage and loss modulus and viscosity of the solution decrease with increasing water concentration of solvent in certain range. Flow-activation energy of two kinds of cellulose solution is quite different in view of their molecular weight. The molecular weigh distribution of cellulose samples can be characterized by the value of Gc. Since the different cellulose samples have different MWD and DP, the relations of the first normal stress difference N1 vs. shear rate are different. Moreover, the rheology properties of cellulose solution produced by twin-screw extruder process are also investigated. |
| Keywords: | N-methylmorpholine N-oxide modulus first normal stress difference |
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