One-step solution casting method for preparing polyvinylidene fluoride-based pyroelectric polymer film
A one-step solution casting method for preparing a PVDF-based pyroelectric polymer film is provided, which belongs to the technical field of functional material preparation. The method comprises steps of: treating a substrate with a hydrophilic reagent to obtain a hydrophilically-modified substrate, and then casting the organic solution of polyvinylidene fluoride (PVDF) or its copolymer on the hydrophilically-modified substrate. After cured, the as-casted PVDF-based film shows pyroelectricity without undergoing any stretching or poling post-treatment, indicates that the dipoles of the one-step prepared film are aligned. The self-polarization of the prepared film is attributed to a hydrogen bond induced layer-by-layer electrostatic self-assembly growth mechanism. The method is simple, low cost, high efficient, high capability to produce thick and large-area film with smooth morphology and ease to be scalized.
University of Electronic Science and Technology of China
B B B B B
B29C B29L B29C B29K B29C
inventional additional inventional additional inventional
Guangzhong Xiaosong Yuming Weizhi Jimeng Huiling
Xie Du Wu Li Li Tai