Synthesis of multifunctional silica-poly(citrate)-based hybrid prepolymers and elastomers. a,b) Fabrication of Multifunctional silica-poly(citrate) (MSPC) and crosslinked MSPC (CMSPC) elastomers by polycondensation of citric acid (CA), 1,8-octylene glycol (OD), aminosilane (AS), as well as the chemical crosslinking with hexamethylene diisocyanate (HDI) and c) schematic diagram showing the formation of CMSPC hybrid elastomers matrix. Reproduced from Ref [30].