Open AccessFUNCTIONAL ORGANOSILICON SUBSTANCES AS STABILIZERS OF POLYMERIC SUSPENSIONS
Author(s) -
И. А. Грицкова,
Д. И. Шрагин,
С. М. Левачев,
А. А. Ежова,
Е. В. Милушкова,
В. М. Копылов,
С. А. Гусев,
Н. И. Прокопов,
Н. А. Лобанова
Publication year - 2016
Publication title -
tonkie himičeskie tehnologii
Language(s) - English
Resource type - Journals
eISSN - 2686-7575
pISSN - 2410-6593
DOI - 10.32362/2410-6593-2016-11-2-5-16
Subject(s) - organosilicon , siloxane , polymerization , polymer , monomer , pulmonary surfactant , polymer chemistry , adsorption , chemical engineering , styrene , materials science , silicone , chemistry , organic chemistry , copolymer , engineering
The review presents schemes for obtaining homologous series of the linear α,ω-carbofunctional oligodimethylsiloxanes with the silicone chain length from 6 to 60 siloxane units containing carboxydecyl, aminopropyl and glycidoxypropyl groups at the chain ends allowing to obtain organosilicon surfactants with reproducible structure and properties. Data on the surfactant colloidchemical properties and kinetic regularities of styrene polymerization in their presence are provided. Systematic research of heterophase styrene polymerization kinetic regularities in the presence of water-insoluble α,ω-carbofunctional oligodimethylsiloxane allowed to formulate the fundamental differences of polymerization kinetic regularities from those observed in the presence of water-soluble surfactants. The mechanism of interfacial adsorption layers formation with water-insoluble α,ω-carbofunctional oligodimethylsiloxanes on the surface of monomer drops and polymer-monomeric particles was considered. This mechanism consists in the forced surfactant replacement by the formed polymer (because of their incompatibility) to the interfacial adsorption layer and in the formation of the surfactant supermolecular structures. The latter in total with the polymer provide its high durability.