Abstract
| Language | English |
|---|---|
| Article number | 124902 |
| Pages | 1-9 |
| Number of pages | 9 |
| Journal | Journal of Chemical Physics |
| Volume | 140 |
| DOIs | |
| State | Published - 2014 |
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Self-replenishing ability of cross-linked low surface energy polymer films investigated by a complementary experimental-simulation approach. / Esteves, A.C.C.; Lyakhova, K.; Riel, van, J.M.; Ven, van der, L.G.J.; Benthem, van, R.A.T.M.; With, de, G.
In: Journal of Chemical Physics, Vol. 140, 124902, 2014, p. 1-9.Research output: Contribution to journal › Article › Academic › peer-review
TY - JOUR
T1 - Self-replenishing ability of cross-linked low surface energy polymer films investigated by a complementary experimental-simulation approach
AU - Esteves,A.C.C.
AU - Lyakhova,K.
AU - Riel, van,J.M.
AU - Ven, van der,L.G.J.
AU - Benthem, van,R.A.T.M.
AU - With, de,G.
PY - 2014
Y1 - 2014
N2 - Nowadays, many self-healing strategies are available for recovering mechanical damage of bulk polymeric materials. The recovery of surface-dependent functionalities on polymer films is, however, equally important and has been less investigated. In this work we study the ability of low surface energy cross-linked poly(ester urethane) networks containing perfluorinated dangling chains to self-replenish their surface, after being submitted to repeated surface damage. For this purpose we used a combined experimental-simulation approach. Experimentally, the cross-linked films were intentionally damaged by cryo-microtoming to remove top layers and create new surfaces which were characterized by water Contact Angle measurements and X-Ray Photoelectron Spectroscopy. The same systems were simultaneously represented by a Dissipative Particles Dynamics simulation method, where the damage was modeled by removing the top film layers in the simulation box and replacing it by new "air" beads. The influence of different experimental parameters, such as the concentration of the low surface energy component and the molecular mobility span of the dangling chains, on the surface recovery is discussed. The combined approach reveals important details of the self-replenishing ability of damaged polymer films such as the occurrence of multiple-healing events, the self-replenishing efficiency, and the minimum "healing agent" concentration for a maximum recovery.
AB - Nowadays, many self-healing strategies are available for recovering mechanical damage of bulk polymeric materials. The recovery of surface-dependent functionalities on polymer films is, however, equally important and has been less investigated. In this work we study the ability of low surface energy cross-linked poly(ester urethane) networks containing perfluorinated dangling chains to self-replenish their surface, after being submitted to repeated surface damage. For this purpose we used a combined experimental-simulation approach. Experimentally, the cross-linked films were intentionally damaged by cryo-microtoming to remove top layers and create new surfaces which were characterized by water Contact Angle measurements and X-Ray Photoelectron Spectroscopy. The same systems were simultaneously represented by a Dissipative Particles Dynamics simulation method, where the damage was modeled by removing the top film layers in the simulation box and replacing it by new "air" beads. The influence of different experimental parameters, such as the concentration of the low surface energy component and the molecular mobility span of the dangling chains, on the surface recovery is discussed. The combined approach reveals important details of the self-replenishing ability of damaged polymer films such as the occurrence of multiple-healing events, the self-replenishing efficiency, and the minimum "healing agent" concentration for a maximum recovery.
U2 - 10.1063/1.4868989
DO - 10.1063/1.4868989
M3 - Article
VL - 140
SP - 1
EP - 9
JO - Journal of Chemical Physics
T2 - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
M1 - 124902
ER -