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

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)andDesign and Manufacturing Institute (DMI)
Matthew Libera
Affiliation:
Stevens Institute of Technology, Castle Point on the Hudson, Hoboken, N.J. 07030 Polymer Processing Institute (PPI)andDesign and Manufacturing Institute (DMI)
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Abstract

The effects of addition of glass fiber and HMS4 carbon fiber on the crystallization of nylon 6,6 has been investigated using DSC and polarized optical Microscopy (POM). DSC observations indicate that HMS4 fiber lowers the supercooling required to initiate crystallization. A transcrystalline layer is also observed in the near-fiber region of carbon fiber-reinforced composites after DSC. The presence of transcrystallinity and the earlier onset of crystallization for this composite are due to heterogeneous nucleation on carbon fiber surfaces. DSC Measurements of nylon 6,6 with glass fibers show supercoolings similar to those of neat nylon 6,6. Transcrystallinity is also absent in the glass-reinforced composites. These glass fibers appear to be weak nucleation catalysts. Different transcrystalline layer thickness is found to be influenced by thermal processing condition. In addition to transcrystallinity, the HMS4 carbon fiber 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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