Photopolymerization/ Photografting
4
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
-
Upload
eagan-best -
Category
Documents
-
view
36 -
download
2
description
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. - PowerPoint PPT Presentation
Transcript of Photopolymerization/ Photografting
Photopolymerization/Photografting
AdvantagesRapidEnergy EfficientSolvent FreeControl of Initiation
•Spatial/TemporalInitiation Independent of TemperatureHigh Grafting Efficiency for Surface Modification
DisadvantagesThin Films Oxygen Inhibition
Photografting Process
Pan, B.; Viswanthan, K.; Hoyle, C. E.; Moore, R. B. J. Polym Sci. Polym. Chem. 2004, 42, 1953.
O O1 . h v
2 . IS C
T1*
O T1*
O O O
+
C
OH
+
+
H
OO
O
.
.
.
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
SS
hv
NN
N
O
O
O
O
OHS
OO
HS
O
O SH
+
S SS
SS
S
S
S S
SSS S
Compatibilization of Immiscible Blends using LLC templates
O
O
O
O
OO
O
O
10
PEGDA
HDDA
~ 2 nm
Hexagonal LLC
Lamellar LLC
OH
O
10
3
Brij 56
Photopolymerization & Surfactant Removal
J. D. Clapper and C. A. Guymon, Adv. Mat. 2006, 18, 1575.
