| 纤维素预处理后的结构及溶液流变性能 |
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| 引用本文： | 孟华,黄关葆,汪少朋.纤维素预处理后的结构及溶液流变性能[J].纺织学报,2008,29(7):9-12. |
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| 作者姓名： | 孟华 黄关葆 汪少朋 |
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| 作者单位： | 1. 北京服装学院,北京,100029
2. 中国纺织科学研究院,北京,100025 |
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| 摘 要： | 用乙二胺处理纤维素,通过X射线衍射、红外光谱分析对纤维素预处理前后的结构变化进行表征,X射线衍射表明经乙二胺预处理后纤维素的结晶度下降了很多。在相同条件下将等量预处理前后的纤维素溶解在NMMO/H2O体系中,结果显示纤维素经过乙二胺预处理后更容易溶解在NMMO/H2O中。对用乙二胺预处理前后的纤维素/NMMO/H2O溶液的稳态和动态流变性能进行对比研究,结果表明:预处理后纤维素/NMMO/H2O溶液中纤维素相对分子质量分布变窄,纤维素分子缠结网变强,可保持纺丝后纤维的力学性能。
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| 关 键 词： | 纤维素 预处理 N-甲基吗啉-N-氧化物-水合物(NMMO/H20) 流变 纤维素 预处理 结构变化 溶液 流变性能 cellulose rheological behavior structure 力学性能 纺丝 结网 相对分子质量分布 研究 动态 稳态 显示 结果 体系 NMMO 溶解 |
| 收稿时间： | 2007-07-09; |
Study on structure and rheological behavior of the pretreated cellulose |
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| MENG Hua,HUANG Guanbao,WANG Shaopeng.Study on structure and rheological behavior of the pretreated cellulose[J].Journal of Textile Research,2008,29(7):9-12. |
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| Authors: | MENG Hua HUANG Guanbao WANG Shaopeng |
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| Affiliation: | 1.Beijing Institute of Clothing Technology;Beijing 100029;China;2.China Textile Academy;Beijing 100025;China |
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| Abstract: | Cellulose was pretreated in solution of 1,2-ethylene diamine.The changes of structure of pretreated cellulose were investigated.The change of crystallinity was characterized by X-ray diffraction.It can be concluded that cellulose pretreated in solution of 1,2-ethylene diamine leads to great decrease of crystallinity.Pretreated cellulose can more easily dissolves in N-methylmorpholine-N-oxide/H2O under the same conditions.Then the steady-state and dynamic rheological behavior of pretreated cellulose and original cellulose solutions were investigated respectively.The distribution of relative molecular mass of pretreated cellulose/N-methylmorpholine-N-oxide/H2O solution became narrow.The entanglements of cellulose turned strong.It can keep the mechanical intensity when spinning. |
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