Abstract
The spinnability of semi-dilute poly(m-phenylene isophalamide) (PMIA) spinning dope was regulated by a small amount of surfactants to make it suitable for dry-jet wet spinning. OP-10 shows the best effect of lowering the surface tension of PMIA spinning dope among the selected surfactants. The effects of different amounts of OP-10 on surface tension and rheological behavior of PMIA spinning dope were investigated. Results show that when the content of OP-10 reaches 0.5 wt.%, the surface tension of the PMIA dope reduces to a minimum. The apparent viscosity of the PMIA dope increases with the increment of OP-10 contents. The dynamic viscoelasticity study shows that OP-10 also enhances the elasticity of the PMIA spinning dope. The spinning dope with 0.5 wt.% OP-10 can be smoothly spun by dry-jet wet spinning, and the obtained PMIA filament shows excellent mechanical performance.
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Acknowledgment
This work was supported by the National Key Research and Development Program of China (Project No. 2017YFB0309000), the Sichuan Science and Technology Planning Project (Project No. 19ZDZX0098), and the Fundamental Research Funds for Central Universities. The authors gratefully acknowledge the State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University and the Analytical & Testing Centre of Sichuan University.
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Liu, Q., Cao, K., Qi, S. et al. The Effects of Surfactants on the Spinnability, Structure and Properties of Dry-jet Wet Spinning Poly(m-phenylene isophalamide) Fiber. Fibers Polym 21, 1438–1443 (2020). https://doi.org/10.1007/s12221-020-9905-9
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DOI: https://doi.org/10.1007/s12221-020-9905-9