溶胶-凝胶工艺

AbstractSol–gel derived multi-component silica composites are widely accepted as smart materials in orthopedic surgery as bone fillers and bioactive skeleton drug delivery systems. This paper discusses the effect of hydroxy-terminated polydimethylsiloxane (PDMS) (10, 20, 30 and 40% (w/w)) on the physicochemical properties of low temperature sol–gel processed polydimethylsiloxane/calcium phosphate/silica (PDMS-modified CaP/SiO2) composites. The micromolding technique was employed to obtain PDMS-modified CaP/SiO2 composites–monolithic granule-type formulations.

Abstract\n\t\t\t\t\n\t\t\t\t\tPolyimide-polydimethylsiloxane (PI-PDMS) hybrids were synthesized by combining an in situ sol–gel reaction of diethoxydimethylsilane (DEDMS) and imidization of poly(amide acid) (PAA) prepared from pyromellitic dianhydride (PMDA) and 4,4′-oxydianiline (ODA). Transparent hybrid films were obtained with up to 3\n\t\t\t\t\t\twt.% PDMS content corresponding to the relatively small domain size of PDMS as confirmed by scanning electron microscopy.