Hull synthesis
Microcapsules having a thermal release. A new approach to the fabrication of core shell capsules

The rigid silica shell is synthesized in situ using a sol-gel process . Simple chemical reactions (hydrolysis and condensation) carried out at room temperature result in an inorganic polymer. The synthesis is carried out by the addition of a monomer, or silica precursor: tetraethylorthosilicate Si(OC₂H₅)₄ denoted TEOS. TEOS is first hydrolyzed with the formation of silicic acid Si(OH)₄ and alcohol (ROH). In a second step, a condensation reaction [polymerization through...