Processing, Structure, and Properties of PAN/MWNT Composite Fibers

✍ Scribed by Rahul Jain; Marilyn L. Minus; Han Gi Chae; Satish Kumar

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 776 KB
• Volume: 295
• Category: Article
• ISSN: 1438-7492
• DOI: 10.1002/mame.201000083

✦ Synopsis

Abstract

Conventional dry‐jet wet fiber spinning techniques were used to fabricate continuous PAN/MWNT composite fibers with up to 20 wt.‐% nanotube loading. PAN at the MWNT interface exhibited lower solubility under thermodynamically favorable conditions than in bulk PAN, indicating good interfacial interaction. Due to the PAN/MWNT interaction at the interface, thermal shrinkage decreases with increasing MWNT loading (5 to 20 wt.‐%). For high MWNT loadings, PAN/MWNT composite fiber at 15 wt.‐% MWNT loading showed an axial electrical conductivity of 1.24 S · m^−1^. For all loadings, PAN/MWNT composite fibers exhibited higher tensile moduli than theoretically predicted by rule‐of‐mixture calculations, suggesting good reinforcement of the PAN by MWNT.

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