Journal of Textile Research ›› 2015, Vol. 36 ›› Issue (02): 1-6.

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Study of mechanical properties and pore structure of cellulose fibers regenerated from two ionic liquids by dry-wet spinning

  

  • Received:2014-09-26 Revised:2014-10-30 Online:2015-02-15 Published:2015-02-13
  • Contact: Xiao-Jun LI E-mail:junlx@mail.dhu.edu.cn

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Abstract:

By dry-wet spinning of cellulose/[BMIM]Cl (1-butyl-3-methylimidazolium chloride) solution and cellulose/[EMIM]Ac (1-ethyl-3-methylimidazolium acetate) solution, three typical regenerated cellulose fibers with high-strength, fibrillation resistance, conventional strength respectively were successfully prepared. The mechanical properties, pore sizes and orientation of the regenerated cellulose fibers were investigated by utilizing tensile-fineness tester, wet friction and small angle X-ray scattering. The mechanism of formation was discussed. The results showed that ionic liquids, degree of polymerization (DP) of cellulose, extrusion swelling, draw stress and orientation of the solution during the spinning process had significant impacts on the DP and orientation of the regenerated cellulose fibers, which promoted the formation of the regenerated cellulose fibers with various mechanical properties, pore sizes and pore orientation distributions.

Key words: ionic lipuid, dry-wet spinning, strength, fibrillation resistance, pore sizes

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