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Elastic properties of adhesive polymers. I. Polymer films by means of electronic speckle pattern interferometry
Author(s) -
Konnerth Johannes,
Gindl Wolfgang,
Müller Ulrich
Publication year - 2006
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.24434
Subject(s) - materials science , composite material , extensometer , polymer , elastic modulus , adhesive , poisson's ratio , speckle pattern , deformation (meteorology) , ultimate tensile strength , poisson distribution , optics , mathematics , statistics , physics , layer (electronics)
The elastic modulus and Poisson's ratio of seven different polymers frequently used as wood adhesives and/or matrix polymers in wood‐ and natural‐fibre‐reinforced composites, respectively, were determined by means of tensile tests. Specimen deformation during testing was measured by means of a mechanical extensometer and an electronic speckle pattern interferometry system, respectively. The results from both methods show an excellent correlation for the elastic modulus. The elastic moduli of the studied polymers cover a wide range from 0.47 GPa for polyurethane to 6.3 GPa for melamine–urea–formaldehyde, whereas Poisson's ratios show less variability. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 103: 3936–3939, 2007