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Effects of Glass and Carbon Fiber on Nylon 6,6Crystallization

Published online by Cambridge University Press:  15 February 2011

Krisda Siangchaew ,
Theodore Davidson  and
Matthew Libera
Krisda Siangchaew
Affiliation:
Stevens Institute of Technology, Castle Point on the Hudson, Hoboken, N.J. 07030 Department of Materials Science and Engineering
Theodore Davidson
Affiliation:
Stevens Institute of Technology, Castle Point on the Hudson, Hoboken, N.J. 07030 Polymer Processing Institute (PPI) and Design and Manufacturing Institute (DMI)
Matthew Libera
Affiliation:
Stevens Institute of Technology, Castle Point on the Hudson, Hoboken, N.J. 07030 Polymer Processing Institute (PPI) and Design and Manufacturing Institute (DMI)
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Abstract

The effects of addition of glass fiber and HMS4 carbon fiber on thecrystallization of nylon 6,6 has been investigated using DSC and polarizedoptical Microscopy (POM). DSC observations indicate that HMS4 fiber lowersthe supercooling required to initiate crystallization. A transcrystallinelayer is also observed in the near-fiber region of carbon fiber-reinforcedcomposites after DSC. The presence of transcrystallinity and the earlieronset of crystallization for this composite are due to heterogeneousnucleation on carbon fiber surfaces. DSC Measurements of nylon 6,6 withglass fibers show supercoolings similar to those of neat nylon 6,6.Transcrystallinity is also absent in the glass-reinforced composites. Theseglass fibers appear to be weak nucleation catalysts. Differenttranscrystalline layer thickness is found to be influenced by thermalprocessing condition. In addition to transcrystallinity, the HMS4 carbonfiber also influences the bulk morphology of the nylon 6,6.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 321: Symposium E – Crystallization and Related Phenomena in Amorphous Materials—Ceramics, Metals, Polymers, and Semiconductors , 1993 , 651
Copyright
Copyright © Materials Research Society 1994

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References

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