POLY 431 |
| Previous studies showed methyl methacrylate (MMA) and n-butyl acrylate (nBA) were polymerized to form stable colloidal particles in the presence of sodium dioctyl sulfosuccinate (SDOSS) and 1,2-dilauroyl-sn-glycero-3-phosphocholine (DLPC) in aqueous phase. Stimuli-responsive behaviors of these colloidal dispersions were investigated and various stimuli drive molecular entities to designated areas of coalesced films. In this study, we focus on the synergistic stimuli-responsive characteristics of the phospholipid stabilized colloidal dispersions such as the combined effects of ionic strength, enzyme, and pH on the mobility of dispersion stabilizing agents within p-MMA/nBA copolymer matrixes during and after coalescence. Attenuated total reflectance Fourier transform infrared (ATR FT-IR) spectroscopy of p-MMA/nBA colloidal dispersions revealed the formation and the preferential orientation of surface localized ionic clusters (SLICs) at the film-air (F-A) or film-substrate (F-S) interfaces in response to the combined stimulus effects. Using this approach it is possible to control surface morphologies of coalesced films. |
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7th International Biorelated Polymers Symposium
6:00 PM-8:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster
Sci-Mix
Division of Polymer Chemistry |