Effect of microcellular foaming on the fracture behavior of ABS polymer. Issue 7 (30th October 2015)

• Record Type: Journal Article
• Authors: Gómez‐Monterde, Javier; Schulte, Manfred; Ilijevic, Stefan; Hain, Jörg; Sánchez‐Soto, Miguel; Santana, Orlando O.; Maspoch, Maria Lluisa
• Is Part Of: Journal of applied polymer science. Volume 133:Issue 7(2016)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2015-10-30
• Subjects: foams -- mechanical properties -- morphology; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.43010
• Languages: English
• ISSNs: 0021-8995

Abstract

ABSTRACT: In this work, the properties of microcellular ABS were studied. Foamed samples exhibited a solid skin/foamed core structure, with some elongated cells in the flow direction, while spherical cells were mostly observed in the transversal direction. The flexural modulus, flexural strength, and fracture toughness K Ic decreased with the density. However, the Crack Tip Opening Displacement ( CTOD ) was found to increase with the foaming ratio. The evolution of the mechanical properties and fracture toughness was well described by prediction models considering the skin/core morphology of these microcellular materials. Foaming increased the anisotropic behavior of the material, due to the cell elongation caused by the fountain flow during injection. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2016, 133, 43010. Abstract :