Preparation and Characterization of Mono- and Multilayer Films of Polymerizable 1,2-Polybutadiene Using the Langmuir-Blodgett Technique.

Citation:

Maria Hitrik, Gutkin, Vitaly , Lev, Ovadia , and Mandler, Daniel. . 2011. “Preparation And Characterization Of Mono- And Multilayer Films Of Polymerizable 1,2-Polybutadiene Using The Langmuir-Blodgett Technique.”. Langmuirlangmuir, 27, Pp. 11889 - 11898.

Abstract:

The essence of this study is to apply the Langmuir-Blodgett (LB) technique for assembling asym. membranes. Accordingly, Langmuir films of a (further) polymerizable polymer, 1,2-polybutadiene (1,2-pbd), were studied and transferred onto different solid supports, such as Au, In Sn oxide (ITO), and Si. The layers were characterized both at the air/H2O interface as well as on different substrates using numerous methods including cyclic voltammetry, impedance spectroscopy, spectroscopic ellipsometry, at. force microscopy, XPS, and reflection-absorption FTIR spectroscopy. The Langmuir films were stable at the air-H2O interface as long as they were not exposed to UV irradn. The LB films formed disorganized layers, which gradually blocked the permeation of different species with increasing the no. of deposited layers. The thickness was \~4-7 Å per layer. Irradiating the Langmuir films caused their crosslinking at the air-H2O interface. Also, the authors took advantage of the reactivity of the double bond of the LB films on the solid supports and graft polymd. acrylic acid on top of the 1,2-pbd layers. This approach is the basis of the formation of an asym. membrane that requires different porosity on both of its sides. [on SciFinder(R)]