Journal of Applied Polymer Science, Vol.62, No.7, 1115-1128, 1996
Process Structure-Property Relationships in Electron-Beam Generated Cellular Materials
Cellular materials were generated from radiation curable compositions of acrylated monomers and oligomers utilizing electron beam irradiation techniques. The relationships between the processing variables, the chemical compositions, and the final properties of these materials were examined. Two methods of producing these materials were compared. One process consists of frothing the radiation curable mixture before irradiation by a mixing technique and then casting the unpolymerized froth onto a substrate where it can be sub sequently cured using electron beam radiation. Another process relies on a surfactant to stabilize the cellular structure before irradiation. It was found that the quality of the cellular structures produced by these techniques is highly dependent on the viscosity of the radiation curable mixture. A detailed outline of these processes with the resultant structures and properties of these cellular materials is presented along with comparison with other cellular material generation processes.