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

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Jiaping Zhang, Naoki Yamagishi, Yasuo Gotoh, Antje Potthast, Thomas Rosenau
Förläggare: Wiley
Publiceringsår: 2019
Tidskrift: Journal of Applied Polymer Science


Abstrakt

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.


Senast uppdaterad 2020-24-02 vid 06:08