Silicon dioxide amorphous hexamethyldisilazane treated particles sis6962.0

[14–16%(chloropropyl)methylsiloxane]-dimethylsiloxane, LMS-152 (M_n = 8,750 g·mol⁻¹, ∼14 chloropropyl groups per polymer) was obtained from Gelest Inc. Silanol-terminated polydimethylsiloxane, C2T (M_n = 22,000 g·mol⁻¹) was purchased from Wacker Chemie AG. Toluene, chloroform, ethyl acetate, and 1-ethylimidazole were acquired from Sigma-Aldrich. Trimethoxylsiloxane (crosslinker) and dibutyltin diacetate (Sn catalyst) were obtained from Sika Technology AG. Silicon dioxide amorphous hexamethyldisilazane-treated particles (SIS6962.0) were acquired from Fluorochem. All products were used as received.

Octamethylcyclotetrasiloxane (D4) was acquired from TCI, Belgium, and dried over molecular sieves prior to use. Octaphenylcyclotetrasiloxane (O4) was acquired from TCI and used as received. Tetramethyltetraphenylcyclotetrasiloxane (T4, mixture of isomers) and dimethylformamide (DMF) were acquired from Sigma-Aldrich and dried over molecular sieves prior to use.
Potassium hydroxide was purchased from Sigma-Aldrich as pellets. Prior to use, these were refluxed under cyclohexane at 110 °C for at least 48 h. The resulting suspension was filtered and the precipitate was dried in a vacuum oven.
Vinyl-terminated PDMS, DMS-V31 (M_n = 28 000 g mol⁻¹) and a hydride-functional cross-linker, HMS-301 (M_n = 1950 g mol⁻¹), were acquired from Gelest Inc, USA. The platinum cyclovinylmethyl siloxane complex catalyst (511) was purchased from Hanse Chemie, Germany, while silicon dioxide amorphous hexamethyldisilazane-treated particles (SIS6962.0) were purchased from Fluorochem, Belgium. The inhibitor Pt88 was acquired from Wacker Chemie AG, and all other chemicals were acquired from Sigma-Aldrich, Denmark, and used as received, unless otherwise stated.