Abstract
Abstract The mixed monolayers of polydimethylsiloxane (PDS), sodium alkylsylfonate (E30), styrene (St) and polystyrene (PSt) in various combinations have been studied. The results obtained for two and three-component systems give an evidence of the specific interaction (possible complex formation) of PDS and E30 (responsible for polymeric and surfactant stabiliser factors, respectively) at the interfaces. The four-component monolayers of PDS/PSt/St/E30 have only one liquid-expanded state that is similar to the three-component systems (PDS/St/E30 and PDS/PSt/E30) and in contrast to the two-component systems (PDS/St and PDS/PSt). Moreover, in the case of PDS/PSt/St/E30 (1.0 mass%) system the monolayer parameters are almost not depending on the concentration of PDS (in the range of 1–10 mass%) that suggested as the most adequate model of the interfacial layer of polystyrene latexes. The following optimal ratios of both stabilisers: PDS 1–2% and E30 about 1% (calculated to St) have been found.
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