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“In-Situ Network” Composite Fibers of Pbzt/Nylon

Published online by Cambridge University Press:  26 February 2011

C. Robin Hwang ,
Michael F. Malone ,
Richard J. Farris ,
David C. Martin  and
Edwin L. Thomas
C. Robin Hwang
Affiliation:
Univ. of Massachusetts, Chem. Eng. Dept., Amherst, MA 01003
Michael F. Malone
Affiliation:
Univ. of Massachusetts, Chem. Eng. Dept., Amherst, MA 01003
Richard J. Farris
Affiliation:
Polym. Sci. & Eng. Dept., Amherst, MA 01003
David C. Martin
Affiliation:
Polym. Sci. & Eng. Dept., Amherst, MA 01003
Edwin L. Thomas
Affiliation:
Polym. Sci. & Eng. Dept., Amherst, MA 01003
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Abstract

A novel method of preparing PBZT/nylon composite fibers by infiltrating nylon into pure PBZT fiber is described. The pure PBZT fiber formed a microfibrillar network structure during coagulation, which is effective in reinforcing the matrix in the “in-situ network” composite fibers (designated IC). These new composite fibers exhibit nearly indistinguishable mechanical properties as those of “molecular” composite fibers (MC) prepared from isotropic solutions before and after tension heat-treatment (E = 44 GPa, σ = 430 MPa, ε = 1.2 %, σc = 250 MPa, G = 1.75 GPa) for PBZT/nylon weight ratios equal to unity.

The fine structure of pure PBZT and its composite fibers spun from isotropic solutions was characterized using techniques based on nitrogen adsorption, small-angle X-ray scattering, scanning and transmission electron microscopies. The structure of both type of composites was found to be a microfibrillar network of PBZT in a matrix of amorphous nylon. The average diameters of the PBZT microfibrils were in the range of 10 to 20 nm for the IC and 4 nm for the MC.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 134: Symposium J – Materials Science and Engineering of Rigid-Rod Polymers , 1988 , 547
Copyright
Copyright © Materials Research Society 1989

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References

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