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Shear Behavior of Flexible Polyurethane Foams Under Uniaxial Compression

Andersson, Anna LU ; Lundmark, Stefan LU ; Magnusson, Anders and Maurer, Frans LU (2009) In Journal of Applied Polymer Science 111(5). p.2290-2298
Abstract
The mechanisms behind the load building capabilities of a hyperbranched polymer (HBP) in polyurethane (PU) foams have been investigated, using microscopy techniques and mechanical analyses. By broadening the traditional uniaxial compression characterization of PU foams to include combined shear deformations and compression behavior, an apparent Poisson ratio of the foam could be obtained in situ. The Poisson ratio as function of uniaxial compression ratio of the foam was thus studied for foams filled with Styrene Acrylonitrile (SAN) and foams containing HBP. Generally a window of deformation ratios could be defined in which the Poisson ratio was negative. The width of this window varied systematically with the SAN loading, where an... (More)
The mechanisms behind the load building capabilities of a hyperbranched polymer (HBP) in polyurethane (PU) foams have been investigated, using microscopy techniques and mechanical analyses. By broadening the traditional uniaxial compression characterization of PU foams to include combined shear deformations and compression behavior, an apparent Poisson ratio of the foam could be obtained in situ. The Poisson ratio as function of uniaxial compression ratio of the foam was thus studied for foams filled with Styrene Acrylonitrile (SAN) and foams containing HBP. Generally a window of deformation ratios could be defined in which the Poisson ratio was negative. The width of this window varied systematically with the SAN loading, where an increase in SAN particle loading resulted in a broadening of the negative Poisson ratio window. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 2290-2298, 2009 (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
shear, poly-urethanes, modulus, compression, microstructure
in
Journal of Applied Polymer Science
volume
111
issue
5
pages
2290 - 2298
publisher
John Wiley & Sons
external identifiers
  • wos:000262322900016
  • scopus:62349116598
ISSN
1097-4628
DOI
10.1002/app.29244
language
English
LU publication?
yes
id
ad9d5363-00e0-4836-9fd3-bd3f68635076 (old id 1312777)
date added to LUP
2009-03-13 12:28:07
date last changed
2017-07-30 03:49:54
@article{ad9d5363-00e0-4836-9fd3-bd3f68635076,
  abstract     = {The mechanisms behind the load building capabilities of a hyperbranched polymer (HBP) in polyurethane (PU) foams have been investigated, using microscopy techniques and mechanical analyses. By broadening the traditional uniaxial compression characterization of PU foams to include combined shear deformations and compression behavior, an apparent Poisson ratio of the foam could be obtained in situ. The Poisson ratio as function of uniaxial compression ratio of the foam was thus studied for foams filled with Styrene Acrylonitrile (SAN) and foams containing HBP. Generally a window of deformation ratios could be defined in which the Poisson ratio was negative. The width of this window varied systematically with the SAN loading, where an increase in SAN particle loading resulted in a broadening of the negative Poisson ratio window. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 2290-2298, 2009},
  author       = {Andersson, Anna and Lundmark, Stefan and Magnusson, Anders and Maurer, Frans},
  issn         = {1097-4628},
  keyword      = {shear,poly-urethanes,modulus,compression,microstructure},
  language     = {eng},
  number       = {5},
  pages        = {2290--2298},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Applied Polymer Science},
  title        = {Shear Behavior of Flexible Polyurethane Foams Under Uniaxial Compression},
  url          = {http://dx.doi.org/10.1002/app.29244},
  volume       = {111},
  year         = {2009},
}