Energy of adhesion of polydimethylsiloxane networks / glass and polycarbonate assemblies
| Autor: | Jacques Schultz, A. Pouchelon, M.F. Vallat, I. Nebesarova |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
chemistry.chemical_classification
Materials science Polydimethylsiloxane Hydrosilylation technology industry and agriculture Substrate (chemistry) macromolecular substances Surfaces and Interfaces General Chemistry Polymer Adhesion Surface energy Surfaces Coatings and Films chemistry.chemical_compound symbols.namesake chemistry Mechanics of Materials visual_art Polymer chemistry Materials Chemistry visual_art.visual_art_medium symbols Polycarbonate van der Waals force |
| Zdroj: | Journal of Adhesion Science and Technology. 12:433-443 |
| ISSN: | 1568-5616 0169-4243 |
| DOI: | 10.1163/156856198x00137 |
| Popis: | The reversible energy of adhesion of polydimethylsiloxane (PDMS) networks/substrate assemblies evaluated from surface energy values obtained by wettability measurements is compared with that determined by Johnson, Kendall and Roberts' (JKR) approach. The role of the hydroxyl groups of the PDMS chains in the establishment of the interactions with the glass substrate is confirmed. Indeed, by using the hydrosilylation reaction between vinyl functional groups on PDMS chains on the one hand and silyl hydride functional groups carried by other PDMS chains on the other, polymer networks are obtained without any by-products. Moreover, no hydroxyl groups are present in the polymer network and only interactions of the van der Waals type should occur between the polymer and the glass substrate, even in the presence of ammonia vapor, which has a catalytic effect on the formation of the polymer-substrate interactions involving the hydroxyl groups, as already shown. The JKR approach indicates that the interactions are ... |
| Databáze: | OpenAIRE |
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