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Morphology and Formation of Fibrillar Structure in Pbo Fiber

Published online by Cambridge University Press:  21 February 2011

C.C. Chau ,
J.H. Blackson ,
H.E. Klassen  and
W.-F. Hwang
C.C. Chau
Affiliation:
The Dow Chemical Company, Midland, MI 48674
J.H. Blackson
Affiliation:
The Dow Chemical Company, Midland, MI 48674
H.E. Klassen
Affiliation:
The Dow Chemical Company, Midland, MI 48674
W.-F. Hwang
Affiliation:
The Dow Chemical Company, Midland, MI 48674
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Abstract

Electron microscopy studies showed that the porous structure of PBO fiber may contain fractal geometries; i.e., the void spaces are self-similar with variations in magnification. At the fiber surface, a dense skin which consists of fibrils was observed. In the matrix, the fibril size is about 5 to 50 nm with the voids distributed randomly among the fibrils. The fractal dimension of voids in PBO fiber as determined by microscopy and image analysis was found to be 2.44. The fibrillated fiber showed a continuous fibril size distribution with no evidence of fibril size hierarchy. These observations suggest a nucleation and growth mechanism for the formation of the fibrillar structure in PBO fiber.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 171: Symposium O – Polymer Based Molecular Composites , 1989 , 159
Copyright
Copyright © Materials Research Society 1990

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References

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