Freestanding Graphene Oxide-Polytetrafluoroethylene Membranes with Excellent Photothermic Performance for Laser Ignition

Abstract A new kind of laser energy convertor with highly improved photothemic performance was fabricated using a facile and versatile approach, which was composed of graphene oxide and polytetrafluoroethylene membranes. SEM, XRD and TG-DSC were performed to characterize and compare the morphology, composition and heat release of the different graphene oxide and polytetrafluoroethylene membranes. The optimized freestanding composite membrane exhibited highly improved photothermic temperature rise under the laser irradiation (from 132 °C to 236 °C), which was further used as the laser energy convertor for the laser ignition and largely reduced the threshold power for laser initiators (approximately 48%). These results can promote the development of superior laser energy convector and also laser initiators with low ignition energy.