The effect of stoichiometry on the fracture toughness of a polyurethane-urea elastomer

Beck, R. A. and Truss, R. W. (1999) The effect of stoichiometry on the fracture toughness of a polyurethane-urea elastomer. Polymer, 40 2: 307-313. doi:10.1016/S0032-3861(98)00245-6


Author Beck, R. A.
Truss, R. W.
Title The effect of stoichiometry on the fracture toughness of a polyurethane-urea elastomer
Journal name Polymer   Check publisher's open access policy
ISSN 0032-3861
Publication date 1999-01-01
Sub-type Article (original research)
DOI 10.1016/S0032-3861(98)00245-6
Volume 40
Issue 2
Start page 307
End page 313
Total pages 7
Place of publication Oxford
Publisher Elsevier
Language eng
Subject C1
291407 Plastics
670705 Plastic products (incl. construction materials)
Abstract The fracture toughness of a series of polyurethane elastomers based on polytetramethylene glycol (PTMEG) soft segment, a toluene diisocyanate (TDI) and a dimethyl-thio-toluenediamine (Ethacure E300) curative with different ratios of isocyanate to amine groups has been studied. The fracture toughness required to initiate crack growth was found to be invariant with stoichiometry but the degree of stable crack growth was found to vary with stoichiometry. This behaviour has been discussed in terms of the molecular and physical structure of the polymers, particularly the extent of cross-linking which varied with the isocyanate/amine ratio. (C) 1998 Elsevier Science Ltd. All rights reserved.
Keyword Polymer Science
Polyurethanes
Fracture Toughness
Crack Growth
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mechanical & Mining Engineering Publications
 
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Created: Tue, 10 Jun 2008, 23:42:09 EST