PNIPAm/PVA thermo-sensitive fibers

X. Feng; L. Chen; L. L. Ju; Y. P. Zhao

doi:10.1117/12.779600

1 November 2007 PNIPAm/PVA thermo-sensitive fibers

X. Feng, L. Chen, L. L. Ju, Y. P. Zhao

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 64231J (2007) https://doi.org/10.1117/12.779600
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

Using ammonium per sulfate (APS) as initiator, PNIPAm was in situ polymerized in PVA aqueous so1ution and the transparent PNIPAm/PVA blending solution was obtained. PNIPAm/PVA fiber, showing polymer networks cross linked by the entanglement and hydrogen-bonding, was successfully prepared from the blending PNIPAm/PVA solution via wet spinning process with the saturated ammonium per sulfate aqueous solution as coagulation bath. In comparison with the PNIPAm/PVA blending solution, the single PNIPAm solution can not be prepared fibers. The best conditions for preparation of PNIPAm/PVA fiber such as PNIPAm mass ratio in the PNIPAm/PVA solution, PNIPAm polymerized time and reaction temperature in PVA aqueous so1ution was founded. The swelling performance and temperature-sensitive characters of the PNIPAm/PVA fiber were studied. The result showed that PNIPAm/PVA fibers maintain the temperature-sensitive characteristics associated with the roles of the component PNIPAm, the swelling rate of these fibers exhibited sharp change at about 32°C, and the temperature-sensitive property increased with the content of PNIPAm in the fiber increased.

Citation Download Citation

X. Feng, L. Chen, L. L. Ju, and Y. P. Zhao "PNIPAm/PVA thermo-sensitive fibers", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64231J (1 November 2007); https://doi.org/10.1117/12.779600

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