Graphene Oxide Polymer Composite Synthesis

Example 1

Graphene oxide (GO) was suspended in dimethylformamide (DMF) and thoroughly dispersed using a VWR Scientific Model 75T Aquasonic (sonic power ˜90 W, frequency ˜40 kHz) for 24 hours. The concentration of GO in the reaction mixture was held at 1 wt %. To the dispersed GO, a range of weight percentages 1-12 wt % Bisphenol F ethoxylate (2 EO/phenol) diacrylate (BisF) with average molar mass (Mn)˜484 (Sigma) and 4-11.5 wt % PEGDA of various Mn, 700 and 575, were added so that the total amount of polymer added equaled 12 wt %. To this mixture 0.02 g of the photo-initiator lithium phenyl(2,4,6-trimethylbenzoyl)phosphinate) (TPO-Li, Colorado Photopolymer Solutions) was dissolved.