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Photopolymerization/ Photografting

Photopolymerization/ Photografting. Advantages Rapid Energy Efficient Solvent Free Control of Initiation Spatial/Temporal Initiation Independent of Temperature High Grafting Efficiency for Surface Modification Disadvantages Thin Films Oxygen Inhibition. Photografting Process.

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Photopolymerization/ Photografting

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  1. Photopolymerization/Photografting • Advantages • Rapid • Energy Efficient • Solvent Free • Control of Initiation • Spatial/Temporal • Initiation Independent of Temperature • High Grafting Efficiency for Surface Modification • Disadvantages • Thin Films • Oxygen Inhibition

  2. Photografting Process Pan, B.; Viswanthan, K.; Hoyle, C. E.; Moore, R. B. J. Polym Sci. Polym. Chem. 2004, 42, 1953.

  3. Photografting/polymerization Opportunities • Large Range of Vinylic Monomers Can Be Incorporated – Acrylate, Methacrylate, Vinyl Esters, Acrylonitrile, Styrene • Increase Polarity/Adhesion for Polymeric Olefins (PP, HDPE, etc.) • Add Functionality to Surface • Why Photo? (expense, ease of use, safety) • Nanotechnology • Thiol-ene ‘Click’ Chemistry S S S hv S S S S S S + S S S S S S

  4. Compatibilization of Immiscible Blends using LLC templates ~ 2 nm PEGDA Brij 56 HDDA Photopolymerization & Surfactant Removal Hexagonal LLC Lamellar LLC J. D. Clapper and C. A. Guymon, Adv. Mat. 2006, 18, 1575.

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