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Applicability of Wu's criterion for brittle–ductile transition of ethylene/1‐octene copolymer toughened polyamide 6
Author(s) -
Hu Yuexin,
Feng Yulin,
Jiang Yang,
Yin Jinghua,
Jiang Wei
Publication year - 2012
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.37935
Subject(s) - materials science , copolymer , brittleness , octene , composite material , natural rubber , polyamide , volume fraction , 1 octene , glass transition , particle (ecology) , particle size , elastomer , transition temperature , toughening , toughness , polymer chemistry , polymer , chemical engineering , oceanography , superconductivity , physics , quantum mechanics , engineering , geology
The brittle–ductile transition of ethylene/1‐octene copolymer (POE) toughened polyamide 6 (PA6) was studied at various temperatures. The experimental results show that the critical interparticle distance (ID c ) is independent of the POE content, and the POE particle size at lower temperatures, that is, the temperature is much lower than the brittle–ductile transition temperature ( T BD m ) of PA6. At higher temperatures, however, especially temperatures close to the T BD m , the ID c depends on the POE particle size. This indicates that Wu's criterion for rubber toughening, specifically that “the ID c is a material property of the matrix, independent of rubber volume fraction and particle size,” is inapplicable at higher temperatures for the brittle–ductile transition of the POE toughened PA6. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013