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Article | REF: IN121 V1

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

Authors: Véronique SCHMITT, Mathieu DESTRIBATS, Rénal BACKOV

Publication date: March 10, 2011

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4. Hull synthesis

4.1 Chemical reactions

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(OC 2 H 5 ) 4 denoted TEOS. TEOS is first hydrolyzed with the formation of silicic acid Si(OH) 4 ...

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