Binary frontal polymerization: A new method to produce simultaneous interpenetrating polymer networks (SINs)
We report a new method for the preparation of a simultaneous interpenetrating polymer network (SIN) using a thermal propagating front of two independent and noninterfering polymerization mechanisms. The system consists of the free radical crosslinking of triethylene glycol dimethacrylate (TGDMA) and the amine/BCl3·amine curing of diglycidyl ether of bisphenol A (DGEBA). The front velocity dependence on the percentage of each monomer shows a minimum at 45% TGDMA. Temperature profile measurements indicate that a single reaction front propagates. A colored opaque material is produced, but SEM and TEM analysis were inconclusive whether phase separation occurred. Samples as large as 5 cm in diameter were prepared with this method. We conclude that this method should be especially suited for preparing large samples of IPNs in which significant phase separation occurs. © 1997 John Wiley & Sons, Inc.
Publication Source (Journal or Book title)
Journal of Polymer Science, Part A: Polymer Chemistry
Pojman, J., Elcan, W., Khan, A., & Mathias, L. (1997). Binary frontal polymerization: A new method to produce simultaneous interpenetrating polymer networks (SINs). Journal of Polymer Science, Part A: Polymer Chemistry, 35 (2), 227-230. https://doi.org/10.1002/(SICI)1099-0518(19970130)35:2<227::AID-POLA4>3.0.CO;2-P