ISSN:
1434-6036
Keywords:
PACS. 68.35.Ct Interface structure and roughness - 82.70.Gg Gels and sols
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: We have used neutron reflectometry to measure interfacial widths between two polystyrene films, where either one or both films are crosslinked. The observed interfacial width between two networks is larger than the size expected for “dangling ends”, which suggests motion of heterogeneous regions of the networks. In the case when one of the networks is replaced by a linear polymer, the interfacial profile can be asymmetric with a diffusion “front” of linear polymer penetrating the network to a length scale of up to 200 Å. In the case of a more densely crosslinked network and a high molecular weight linear polymer the interface is symmetric implying negligible penetration.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100510050286
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