ABSTRACT

VII. Modification of the Silica Surface in Order to Form End-Grafted PDMS Layers 616

VIII. Conclusions 617

References 619

I. INTRODUCTION

Silica surfaces are naturally highly active with respect to polydimethylsiloxane (PDMS) polymer chains, which spontaneously form hydrogen bonds between the silanol sites of the surface and the oxygen atoms of the backbone of the polymer

Legeretal.

chains.Anumberofpracticalapplicationsofsilicon-basedpolymersrelyonsuch interactions.Thisisthecaseforsiliconesealsroutinelyusedtopreventwater flowingaroundkitchensinks,forexample,inwhichsmallsilicabeadsactas cross-linkersbetweenthechains.Thisisalsothecaseformoresophisticatedand technicalapplicationssuchasthebondingwithsiliconeadhesivesoftheglass windowsinthe"pyramidduLouvre,"bondingwhichhadtobeinvisible,but neverthelessstrong.