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Immiscible ethylene vinyl acetate and nylon blends processed below nylon melting temperature
Author(s) -
Tzur A.,
Narkis M.,
Siegmann A.
Publication year - 2001
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1894
Subject(s) - compounding , materials science , copolymer , composite material , ethylene vinyl acetate , melting point , melting temperature , polymer chemistry , vinyl acetate , phase (matter) , nylon 6 , polymer , chemical engineering , chemistry , organic chemistry , engineering
This article focuses on unique compounding and processing conditions at a temperature slightly below the melting temperature of the dispersed phase and well above the melting peak temperature of the matrix. Compounding and processing were carried out at the same temperature. Fibrillar morphologies were obtained by blending ethylene vinyl acetate (EVA) copolymer with nylon 6 (N6) and compounding and processing them slightly below the N6 melting temperature. A hot, soft‐solid particle drawing mechanism that operates in such processing conditions caused fibrillation of the N6 particles and formation of highly oriented fibril‐filled composites throughout the entire volume. Morphological observations were made in the core region. Enhancement of some mechanical properties and interesting morphological structures were found in some of the blends. The melt elasticity, which was measured by the die swell of the filaments, was maximum at a temperature slightly below the N6 melting temperature, which supported the concept of fibrillation by processing it slightly below the melting temperature of the dispersed phase. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 661–671, 2001