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首页> 外文期刊>Journal of Applied Polymer Science >High performance cellulose fibers regenerated from 1-butyl-3-methylimidazolium chloride solution: Effects of viscosity and molecular weight
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High performance cellulose fibers regenerated from 1-butyl-3-methylimidazolium chloride solution: Effects of viscosity and molecular weight

机译：从1-丁基-3-甲基咪唑氯化物溶液中再生的高性能纤维素纤维：粘度和分子量的影响

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摘要

In the present study, we focused on several factors affecting the utility of 1-butyl-3-methylimidazolium chloride (BMIMCl) for obtaining higher performance fibers. The dependence of the spinnability and tensile strength of the fibers on the zero-shear viscosity of the spinning solutions was investigated based on differences in the molecular weight of the cellulose, pulp concentration, and the pH of BMIMCl. We demonstrated an appropriate viscosity range of 2000-4000 Pa s(-1) (100 degrees C) for spinning dopes to obtain good spinnability and high tensile strength. The pH of the BMIMCl and the molecular weight of the cellulose clearly impacted tensile strength. The high molecular weight of cellulose contributed to high mechanical properties of the regenerated cellulose fibers. Optimizing the molecular weight and concentration of the cellulose based on the appropriate viscosity allowed us to prepare high performance cellulose fibers with a tensile strength of 1.15 GPa and a Young's modulus of 42.9 GPa. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48681.
机译：在本研究中，我们专注于影响1-丁基-3-甲基咪唑氯化物（BMIMCL）以获得更高的性能纤维的若干因素。基于纤维素，纸浆浓度和BmimCL的pH的分子量的差异，研究了纤维的旋转性和抗拉伸强度对纺丝溶液的零剪切粘度的依赖性。我们证明了2000-4000Pa（-1）（100℃）的适当粘度范围，用于纺丝掺杂物，以获得良好的可纺性和高拉伸强度。 Bmimcl的pH和纤维素的分子量明显影响拉伸强度。纤维素的高分子量有助于再生纤维素纤维的高机械性能。优化基于适当粘度的纤维素的分子量和浓度，使我们制备高性能纤维素纤维，其拉伸强度为1.15GPa和杨氏模量为42.9GPa。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,137,48681。

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