Formation of Poly(vinyl alcohol)/SWNTs Fibers with Hierarchical Structure under High-Speed Shear Flow 


Vol. 21,  No. 5, pp. 1078-1085, May  2020
10.1007/s12221-020-9708-z


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  Abstract

This study introduces a facile method to prepare syndiotactic poly(vinyl alcohol) (s-PVA) fibers containing singlewalled carbon nanotubes (SWNTs) from the corresponding composite dispersions with tea polyphenols (TP) as dispersant under high-speed shear flow. The formation of the composite fibrous precipitates at high shear rate is largely facilitated by the SWNTs in the dispersions and slight flow resistance. Interestingly, the obtained s-PVA/SWNTs composite precipitates possess a three-level hierarchical structure, that is, a single fiber is assembled by fibrils which are composed of microfibrils of s-PVA-coated SWNTs. And the s-PVA fibrous precipitates containing high amounts of SWNTs could be obtained by shearing the dispersion with relatively low SWNTs loadings, as a result, the composite fiber containing 20.7 wt% SWNTs was prepared from the dispersion with 10.0 wt% SWNTs. In addition, with the increase of SWNTs loadings, the amount of the precipitates increases, but crystallinity of the precipitates decreases instead.

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  Cite this article

[IEEE Style]

X. Wang, C. Wu, J. Sun, C. Qin, J. Wang, Q. Zhuo, L. Dai, "Formation of Poly(vinyl alcohol)/SWNTs Fibers with Hierarchical Structure under High-Speed Shear Flow," Fibers and Polymers, vol. 21, no. 5, pp. 1078-1085, 2020. DOI: 10.1007/s12221-020-9708-z.

[ACM Style]

Xia Wang, Changcun Wu, Jun Sun, Chuanxiang Qin, Jianjun Wang, Qiqi Zhuo, and Lixing Dai. 2020. Formation of Poly(vinyl alcohol)/SWNTs Fibers with Hierarchical Structure under High-Speed Shear Flow. Fibers and Polymers, 21, 5, (2020), 1078-1085. DOI: 10.1007/s12221-020-9708-z.

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