K. M. Borisov, E. S. Bokova, A. A. Kalinina, E. A. Svidchenko, A. V. Bystrova, A. M. Sumina, M. Moeller, A. M. Muzafarov, “Formation of hollow silica spheres from molecular silica sols”, Mendeleev Commun., 2020, Volume 30, Issue 6,Pages <nobr>809

This article is cited in 4 papers

Communications

Formation of hollow silica spheres from molecular silica sols

K. M. Borisov^abc, E. S. Bokova^c, A. A. Kalinina^ab, E. A. Svidchenko^a, A. V. Bystrova^ab, A. M. Sumina^d, M. Moeller^b, A. M. Muzafarov^ab

^a N.S. Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, Moscow, Russian Federation
^b A.N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Moscow, Russian Federation
^c A.N. Kosygin Russian State University, Moscow, Russian Federation
^d M.M. Shemyakin–Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation

Abstract: Hollow silica microspheres have been obtained in a surfactantfree templating process at neutral pH from silica sol of 2–10nm globular organic–inorganic silica particles with exposed hydrophobic siloxane part as well as hydrophilic reactive silanol groups. Due to small diffusion coefficient and amphiphilic nature, the sol particles stabilize an oil–water interface quickly. Initially they assemble via noncovalent interaction into a stable shell and then condense covalently, with fast initial stabilization/dispersion of oil–water emulsion improving the control and simplifying the microsphere formation process.

Keywords: silica microcapsules, molecular silica sol, Pickering emulsion, encapsulation, microspheres.

Language: English

DOI: 10.1016/j.mencom.2020.11.040