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Fracture behavior of boehmite-filled polypropylene block copolymer nanocomposites as assessed by the essential work of fracture concept

Journal of applied polymer science, 2014-07, Vol.131 (13), p.np-n/a [Peer Reviewed Journal]

Copyright © 2014 Wiley Periodicals, Inc. ;2015 INIST-CNRS ;ISSN: 0021-8995 ;EISSN: 1097-4628 ;DOI: 10.1002/app.40447 ;CODEN: JAPNAB

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Title:
Fracture behavior of boehmite-filled polypropylene block copolymer nanocomposites as assessed by the essential work of fracture concept
Author: Turcsán, Tamás ; Mészáros, László ; Khumalo, Vincent Mandla ; Thomann, Ralf ; Karger-Kocsis, József
Subjects: Agglomeration ; Aluminum oxide ; Applied sciences ; Composites ; Dispersions ; Elongation ; Exact sciences and technology ; Forms of application and semi-finished materials ; Fracture mechanics ; Fracture toughness ; Nanocomposites ; Polymer industry, paints, wood ; Polypropylenes ; properties and characterization ; structure-property relations ; Technology of polymers ; thermoplastics
Is Part Of: Journal of applied polymer science, 2014-07, Vol.131 (13), p.np-n/a
Description: ABSTRACT The essential work of fracture (EWF) method was adapted to determine the fracture toughness of poly(propylene‐block‐ethylene) (EPBC) based nanocomposites with different amounts (from 0 up to 5 wt %) of synthetic boehmite alumina (BA). The dispersion of BA in the matrix was studied by transmission and scanning electron microscopies. Agglomerated micronscale along with well dispersed nanoscale BA particles were present in the EPBC matrix. By contrast to the neat EPBC, all nanocomposites failed by unstable necking. Therefore the energy partitioning concept of the EWF was adapted and attention paid to the yielding‐related term. Both specific yielding‐related essential and nonessential work of fracture parameters increased linearly with the product of the yield stress and elongation at yield derived from static tensile tests. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40447.
Publisher: Hoboken, NJ: Blackwell Publishing Ltd
Language: English
Identifier: ISSN: 0021-8995
EISSN: 1097-4628
DOI: 10.1002/app.40447
CODEN: JAPNAB
Source: Alma/SFX Local Collection

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Fracture behavior of boehmite-filled polypropylene block copolymer nanocomposites as assessed by the essential work of fracture concept

Copyright © 2014 Wiley Periodicals, Inc. ;2015 INIST-CNRS ;ISSN: 0021-8995 ;EISSN: 1097-4628 ;DOI: 10.1002/app.40447 ;CODEN: JAPNAB

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