Description
| Abstract: | Functionalization of block cooligomers of ethylene and poly(ethylene glycol) is described. Surface sensitive analytical tools confirm that the poly(ethylene glycol) units ended up primarily at the outermost layers of the entrapment functionalized cast film. The selectivity is highest at low loadings of the cooligomer. Enhanced selectivity is observed with high molecular weight poly(ethylene glycol). Studies of fluorescence effects in conjunction with exposure of the films to various solvents have shown that the end groups of these blocks can interact with solvent in much the same way as they do in solution. These fluorescence studies suggest that chemically labeled groups should be accessible to soluble reagents and should have a solution like environment in their chemical reactions. Trichloroacetate capped poly(ethylene glycol) groups were incorporated onto polyethylene surface. These functional groups were reactive as substrates in radical grafting chemistry. Halogen atom abstraction of a chlorine atom from a trichloroacetate group by a solution of a photochemically formed manganese pentacarbonyl reagent generated a surface bound macroinitiator for radical grafting. This method was suitable for introduction of polymethacrylonitrile grafts onto an otherwise unreactive polyethylene film. |
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| Item Description: | Vita.
"Major subject: Chemistry." |
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| Physical Description: | xi, 180 leaves : illustrations ; 28 cm |
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| Bibliography: | Includes bibliographical references. |
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