Synthesis, structure and morphology of poly(dimethylsiloxane) networks filled with in situ generated silica particles

L. Dewimille (1) , B. Bresson (2) , L. Bokobza (1)

1 PCSM - Laboratoire de Physico-Chimie Structurale et Macromoléculaire
2 SIMM - Sciences et Ingénierie de la Matière Molle (UMR 7615)

The morphology of silica particles generated in situ in PDMS networks in the presence of two types of catalysts is evaluated by using different techniques including solid-state 29Si MAS NMR, near-infrared spectroscopies and small-angle X-ray scattering. The interactions with the poly(dimethylsiloxane) chains are examined through the swelling properties and thermal characteristics (in particular crystallization process) of the composites. In addition, 1H NMR is used to investigate the adsorption layer of reduced mobility on the particle surface.

Mots clés: Sol-gel method; Poly(dimethylsiloxane); Silica; NMR - Nuclear magnetic resonance

Domaines: Polymères

L. Dewimille, B. Bresson, L. Bokobza. Synthesis, structure and morphology of poly(dimethylsiloxane) networks filled with in situ generated silica particles. Polymer, 2005, 46 (12, 26), pp.4135-4143. ⟨10.1016/j.polymer.2005.02.049⟩. ⟨hal-00166419⟩