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Monte Carlo simulation of two interpenetrating polymer networks: Structure, swelling, and mechanical properties

Edgecombe, Samuel LU and Linse, Per LU (2008) In Polymer 49(7). p.1981-1992
Abstract
The swelling and mechanical properties of various interpenetrating polymer networks (IPNs) were studied. Six networks made from permutations of a moderately crosslinked polyelectrolyte network (ref), a moderately crosslinked neutral polymer network (net1), and a highly crosslinked polyelectrolyte network (net2) were first swollen in water and structural properties such as end-to-end chain lengths and radial distribution functions were compared with the component networks' equilibrium properties. The swelling of composite IPNs was discussed in terms of a balance between the osmotic pressure due to mobile counterions and the restoring force of the network chains, which act in parallel to counteract the osmotic swelling. For the ref-net2... (More)
The swelling and mechanical properties of various interpenetrating polymer networks (IPNs) were studied. Six networks made from permutations of a moderately crosslinked polyelectrolyte network (ref), a moderately crosslinked neutral polymer network (net1), and a highly crosslinked polyelectrolyte network (net2) were first swollen in water and structural properties such as end-to-end chain lengths and radial distribution functions were compared with the component networks' equilibrium properties. The swelling of composite IPNs was discussed in terms of a balance between the osmotic pressure due to mobile counterions and the restoring force of the network chains, which act in parallel to counteract the osmotic swelling. For the ref-net2 system, the strong stretching of net2 chains increases the network restoring force and the further swelling due to the counterions is suppressed. The swollen networks were then uniaxially stretched, and equilibrium stress-strain plots were obtained up to high extension ratios. The equilibrium volume decreased upon uniaxial extension, and the elastic moduli of IPNs of the A-A type were slightly greater than that of their respective single networks. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
interpenetrating polymer networks, static properties, Monte Carlo, simulation
in
Polymer
volume
49
issue
7
pages
1981 - 1992
publisher
Elsevier
external identifiers
  • wos:000255130500030
  • scopus:40849107816
ISSN
0032-3861
DOI
10.1016/j.polymer.2008.02.018
language
English
LU publication?
yes
id
87ff5f37-24e8-450e-bf65-787b4b0064cb (old id 1205655)
date added to LUP
2008-09-19 11:41:35
date last changed
2017-04-30 10:13:38
@article{87ff5f37-24e8-450e-bf65-787b4b0064cb,
  abstract     = {The swelling and mechanical properties of various interpenetrating polymer networks (IPNs) were studied. Six networks made from permutations of a moderately crosslinked polyelectrolyte network (ref), a moderately crosslinked neutral polymer network (net1), and a highly crosslinked polyelectrolyte network (net2) were first swollen in water and structural properties such as end-to-end chain lengths and radial distribution functions were compared with the component networks' equilibrium properties. The swelling of composite IPNs was discussed in terms of a balance between the osmotic pressure due to mobile counterions and the restoring force of the network chains, which act in parallel to counteract the osmotic swelling. For the ref-net2 system, the strong stretching of net2 chains increases the network restoring force and the further swelling due to the counterions is suppressed. The swollen networks were then uniaxially stretched, and equilibrium stress-strain plots were obtained up to high extension ratios. The equilibrium volume decreased upon uniaxial extension, and the elastic moduli of IPNs of the A-A type were slightly greater than that of their respective single networks.},
  author       = {Edgecombe, Samuel and Linse, Per},
  issn         = {0032-3861},
  keyword      = {interpenetrating polymer networks,static properties,Monte Carlo,simulation},
  language     = {eng},
  number       = {7},
  pages        = {1981--1992},
  publisher    = {Elsevier},
  series       = {Polymer},
  title        = {Monte Carlo simulation of two interpenetrating polymer networks: Structure, swelling, and mechanical properties},
  url          = {http://dx.doi.org/10.1016/j.polymer.2008.02.018},
  volume       = {49},
  year         = {2008},
}