Applicability of Wu's criterion for brittle–ductile transition of ethylene/1‐octene copolymer toughened polyamide 6. Issue 2 (11th May 2012)

• Record Type: Journal Article
• Authors: Hu, Yuexin; Feng, Yulin; Jiang, Yang; Yin, Jinghua; Jiang, Wei
• Is Part Of: Journal of applied polymer science. Volume 127:Issue 2(2013:Jan. 15)
• Page Start: 1069
• Page End: 1076
• Publication Date: 2012-05-11
• Subjects: Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.37935
• Languages: English
• ISSNs: 0021-8995

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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<sub><italic>c</italic></sub>) 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 (<italic>T</italic><inline-formula><alternatives><mml:math overflow="scroll" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mtext> </mml:mtext><mml:mrow><mml:mtext>BD</mml:mtext></mml:mrow><mml:mrow><mml:mtext fontstyle="italic">m</mml:mtext></mml:mrow></mml:msubsup></mml:math></alternatives></inline-formula>) of PA6. At higher temperatures, however, especially temperatures close to the <italic>T</italic><inline-formula><alternatives><mml:math overflow="scroll" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mtext> </mml:mtext><mml:mrow><mml:mtext>BD</mml:mtext></mml:mrow><mml:mrow><mml:mtext fontstyle="italic">m</mml:mtext></mml:mrow></mml:msubsup></mml:math></alternatives></inline-formula>, the ID<sub><italic>c</italic></sub> depends on the POE particle size. This indicates that Wu's criterion for rubber toughening, specifically that "the ID<sub><italic>c</italic></sub> 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</p> </abstract>