Melt spinning of PVDF fibers with enhanced β phase structure

Hagström, Bengt (author): RISE,IVF,Chalmers University of Technology, Sweden

(creator_code:org_t)

2013-05-29
2013
English.
In: Journal of Applied Polymer Science. - : Wiley. - 0021-8995 .- 1097-4628. ; 130:4, s. 2603-2609

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Abstract Subject headings

Polyvinylidene fluoride (PVDF) fibers with a high amount of β phase crystal structure were prepared by melt spinning. With this technique, the cold drawing process is critical and efficient when aiming for a high amount of β phase. During the cold drawing process, more than 80% of the originally formed α phase crystal structure was converted into the β phase structure. In addition, the incorporation of 0.01 wt % of amino-modified double wall carbon nanotube (NH2-DWCNT) could further enhance the β phase content in the PVDF fibers. FTIR and DSC studies showed that the addition of NH2-DWCNT to PVDF fibers could increase both the total crystallinity and β phase fraction in PVDF. The addition of nanoclay was found to be less efficient in this respect.

By the author/editor: Guo, Zengwei; Nilsson, Erik; Rigdahl, Mikael; Hagström, Bengt

About the subject

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