COLL 181 |
| David J. Lestage and Marek W. Urban. School of Polymers and High Performance Materials, The University of Southern Mississippi, P.O. Box 10076, Hattiesburg, MS 39406 |
| These model studies focus on behavior of phospholipids in colloidal dispersions during synthesis and particle coalescence. Specifically, methyl methacrylate (MMA) and n-butyl acrylate (nBA) random copolymer and nBA homopolymer dispersions were prepared in the presence of hydrogenated soybean phosphatidylcholine (HSPC) and sodium dioctylsulfosuccinate (SDOSS). These studies show that it is possible to manipulate particle morphology and particle size, and these factors control mobility and stratification of individual components during film formation. For MMA/nBA copolymer and nBA homopolymer latexes without HSPC, one particle size was obtained, and annealing of coalesced latex films at elevated temperatures revealed a preferential migration of SDOSS to the F-A interface. In contrast, MMA/nBA copolymer and nBA homopolymer latexes containing HSPC revealed bimodal particle size and SDOSS migration to the F-A interface was inhibited regardless of temperature. |
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Adsorption of Macromolecules at Liquid-Solid Interfaces
Division of Colloid and Surface Chemistry |