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Mechanical Properties and Structure of Melamine Formaldehyde/Poly(Vinyl Alcohol) Molecular Composites

Published online by Cambridge University Press:  21 February 2011

Kecheng Gong  and
Xinghua Zhang
Kecheng Gong
Affiliation:
Dept. of Polymer Science & Tech., South China Univ. of Tech., Guangzhou, P.R. China
Xinghua Zhang
Affiliation:
Dept. of Polymer Science & Tech., South China Univ. of Tech., Guangzhou, P.R. China
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Abstract

The mechanical properties and structure of melamine formaldehyde (MF)/poly(vinyl alcohol) (PVA) composites were studied in this paper. When PVA content was less than a certain value(about 20 weight %), both flexible strength and impact resistance were improved obviously. While the impact resistance improvement remained the previous trend the flexible strength didn't increase so rapidly as before when the PVA content was more than 20%. The morphology and reactivity of the prepolymer powder and the morphology of the finished specimens were investigated by means of microscope, infrared spectrum and transmission electron microscope(TEM). The results indicated that molecular composite structure was formed in this two-component system. The well-distributed PVA in this system was beneficial to the formation of the molecular composite structure. That could explain the effects of PVA on the mechanical properties and showed that the molecular composite structure are favourable for making full use of the macromolecular potentiality.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 171: Symposium O – Polymer Based Molecular Composites , 1989 , 267
Copyright
Copyright © Materials Research Society 1990

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References

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