| Solubility Behaviour of Cellulose in a Sodium Hydrate/Urea/Thiourea Aqueous Solvent |
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| 作者姓名： | 张帅 程锋伟 李发学 俞建勇 顾利霞 |
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| 作者单位： | [1]The Key Lab of Textile Science ＆ Technology Ministry of Education, Donghua University, Shanghai 201620, China [2]College of Textiles, Donghua University, Shanghai 201620, China [3]Modern Textile Institute, Donghua University, Shanghai 200051, China [4]College of Macerial Science and Engineering, Donghua University, Shanghai 201620, China |
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| 摘 要： | Cellulose pulps were directly dissolved in a green solvent of sodium hydrate/urea/thiourea/water with different composition for the purpose to prepare new regenerated cellulose fibers or films. The results showed that the highest solubility of cellulose in the solvent with the composition of 8/8/6.5/77.5. The results revealed that the pulp feeding sequence, stirring rate, pre-treatment of pulp and pulp size affected the cellulose concentration in the green solvent. Accordingly, the more effective dissolution method was proposed in order to get higher concentration of cellulose. Furthermore, the properties of solution prepared by different kinds of pulps in the solvent were investigated by ARES rheometer. Rheologieal analyses indicated that all cellulose aqueous solutions in their high concentration were pseudoplastic fluids and sensitive to temperature and tended to transform to gel when temperature increased.
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| 关 键 词： | 纺织工业 市场 发展 纺织产品 |
Solubility Behaviour of Cellulose in a Sodium Hydrate/Urea/Thiourea Aqueous Solvent |
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| ZHANG Shuai,CHENG Feng-wei,LI Fa-xue,YU Jian-yong,GU Li-xia.Solubility Behaviour of Cellulose in a Sodium Hydrate/Urea/Thiourea Aqueous Solvent[J].Journal of Donghua University,2008,25(5):533-537. |
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| Authors: | ZHANG Shuai CHENG Feng-wei LI Fa-xue YU Jian-yong GU Li-xia |
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| Institution: | [1]The Key Lab of Textile Science ＆ Technology Ministry of Education, Donghua University, Shanghai 201620, China; [2]College of Textiles, Donghua University, Shanghai 201620, China; [3]Modern Textile Institute, Donghua University, Shanghai 200051, China; [4]College of Macerial Science and Engineering, Donghua University, Shanghai 201620, China |
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| Abstract: | Cellulose pulps were directly dissolved in a green solvent of sodium hydrate/urea/thiourea/water with different composition for the purpose to prepare new regenerated cellulose fibers or films. The results showed that the highest solubility of cellulose in the solvent with the composition of 8/8/6.5/77.5. The results revealed that the pulp feeding sequence, stirring rate, pre-treatment of pulp and pulp size affected the cellulose concentration in the green solvent. Accordingly, the more effective dissolution method was proposed in order to get higher concentration of cellulose. Furthermore, the properties of solution prepared by different kinds of pulps in the solvent were investigated by ARES rheometer. Rheological analyses indicated that all cellulose aqueous solutions in their high concentration were pseudoplastic fluids and sensitive to temperature and tended to transform to gel when temperature increased. |
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| Keywords: | cellulose dissolution pre-treatment stirring cellulose concentration |
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