High performance cellulose fibers regenerated from 1‐butyl‐3‐methylimidazolium chloride solution: Effects of viscosity and molecular weight

Jiaping Zhang, Naoki Yamagishi, Yasuo Gotoh, Antje Potthast, Thomas Rosenau

    Research output: Contribution to journalArticleScientificpeer-review

    17 Citations (Scopus)


    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 °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.

    Original languageUndefined/Unknown
    Pages (from-to)
    JournalJournal of Applied Polymer Science
    Publication statusPublished - 2019
    MoE publication typeA1 Journal article-refereed

    Cite this