Interdigitation between surface-anchored polymer chains and an elastomer : consequences for adhesion promotion
نویسندگان
چکیده
We study the adhesion between a cross-linked elastomer and a flat solid surface where polymer chains have been end-grafted. To understand the adhesive feature of such a system, one has to study both the origin of the grafted layer interdigitation with the network, and the endgrafted chains extraction out of the elastomer when it comes unstuck from the solid surface. We shall tackle here the first aspect for which we develop a partial interdigitation model that lets us analytically predict a critical surface grafting density σ∗ ≃ P 1 10N− 3 5 beyond which the layer no longer interdigitates with the elastomer. We then relate this result with recent adhesion measurements.
منابع مشابه
Role of Surface-Anchored Polymer Chains on the Adhesion of an Elastomer
We study the adhesion between an elastomer of cross-link index, P, and a flat solid surface where polymer chains of polymerisation index, N, have been end-grafted. To understand the adhesive feature of such a system, one has to study both the origin of the grafted layer interdigitation with the network and the end-grafted chain extraction out of the elastomer when it separates from the solid su...
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