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Kopylov V.M.,RAS Institute of Chemistry | Ivanova V.L.,RAS Institute of Chemistry | Raigorodskii I.M.,OOO Penta 91 Penta 91 LLC | Kovyazin V.A.,RAS Institute of Chemistry | Kireev V.V.,Di Mendeleeva Russian Chemico Technological University
International Polymer Science and Technology | Year: 2011

Crosslinked block polycarbonate siloxanes (B-PCSs) with a gel fraction yield of up to 92 wt% were obtained by hydrosilylation and photopolymerisation, respectively, by the vinyl and methacrylate groups in B-PCSs. In the process of photocrosslinking, the strength properties of films of B-PCSs increase by 15-20% by comparison with non-crosslinked specimens. B-PCSs with chemically bound phenyl- and amine-type dyes were synthesised by a two-stage method: by reactions of hydroxy and amine groups of the dye with chloroformate groups of diphenylolpropane with subsequent polycondensation of the reaction mixture with bis-phenolsiloxanes. Investigation by electron spectroscopy in the visible region of the spectrum of crosslinked structurally coloured B-PCSs showed that, during crosslinking, there is no change in their spectral characteristics by comparison with the initial linear coloured copolymers. © 2011 Smithers Rapra Technology. Source

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