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Langmuir and Langmuir-Blodgett films of a maleic anhydride derivative: effect of subphase divalent cations.

Langmuir : the ACS journal of surfaces and colloids (2010-08-28)
B Martín-García, M Mercedes Velázquez, J A Pérez-Hernández, J Hernández-Toro
ABSTRACT

We report the study of the equilibrium and dynamic properties of Langmuir monolayers of poly(styrene-co-maleic anhydride) partial 2-buthoxyethyl ester cumene terminated polymer and the effect of the Mg(NO(3))(2) addition in the water subphase on the film properties. Results show that the polymer monolayer becomes more expanded when the electrolyte concentration in the subphase increases. Dense polymer films aggregate at the interface. The aggregates are transferred onto silicon wafers using the Langmuir-Blodgett methodology and the morphology is observed by AFM. The structure of aggregates depends on the subphase composition of the Langmuir film transferred onto the silicon wafer.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Cumene, 98%
Supelco
Cumene, Pharmaceutical Secondary Standard; Certified Reference Material
Supelco
Cumene, PESTANAL®
Supelco
Cumene solution, certified reference material, 5000 μg/mL in methanol