Abstract:
The present invention relates to a biodegradable gel polymer electrolyte composition and a manufacturing method thereof and, more particularly, to a biodegradable gel polymer electrolyte composition comprising: a polymer matrix composed of a poly(ethylene oxide)-based monomer and a biodegradable polymer, a photoinitiator, and an electrolyte composed of lithium salt and an organic solvent; and a manufacturing method thereof. The electrolyte composition according to the present invention can be manufactured rapidly by only ultraviolet irradiation without using a separate chemical while having excellent mechanical properties and electrochemical properties, and is an eco-friendly electrolyte that can be decomposed naturally upon disuse.
Abstract:
PURPOSE: An ultraviolet light sensor based on an optical fiber lattice where an azobenzene polymer is coated and ultraviolet light detecting device using the same are provided to easily manufacture an ultraviolet detecting sensor by coating an azobenzene polymer on optical fiber where a fiber brag grating is formed and easily measure strength of ultraviolet lights. CONSTITUTION: An ultraviolet light sensor based on an optical fiber lattice where an azobenzene polymer is coated comprises optical fibers(10) and azobenzene polymer(20). The optical fibers comprise an optical fiber brag lattice. The azobenzene polymer is coated on the optical fibers. When the azobenzene polymer is exposed to the ultraviolet lights, the azobenzene polymer increases an optical fiber core lattice period by inducing a tension in the optical fibers, thereby moving center wavelength of the optical fiber brag lattice to a long wavelength.
Abstract:
PURPOSE: A gel polymer electrolyte composition has excellent ion conductivity, workability, and mechanical strength, so that the composition is suitable for an electrolyte for the lithium polymer secondary battery. CONSTITUTION: A gel polymer electrolyte composition comprises: as (A) vinylidene fluoride/ hexafluorinated propylene polymer soluble in 5-35% by weight of an electrolyte; (B) as nitrile sucrose and nitrile cellulose for improving ion conduction of gel electrolyte and hygroscopic property of 3-20% by weight of an electrolyte; (C) monomers, having affinity with 5-30% by weight of electrolyte, forming polymers after terminating film curing; and (D) an electrolyte wherein lithium salt is dissolved in 55-85% by weight of an aprotic solvent.
Abstract:
PURPOSE: A self-photo-initiating azobenzene acrylate is provided to able to self photo-initiate without adding separate photo-initiators, and to impart optical properties of a polymer liquid crystal resin film by only on-off switching of light when applied to a polymer dispersed liquid crystal film composition. CONSTITUTION: A self-photo-initiating azobenzene acrylate is in chemical formula 1. In chemical formula 1, R is -(CH2)n-, and n is an integer from 1-18. A manufacturing method of the self-photo-initiating azobenzene acrylate comprises a step of Michael addition of multifunctional azobenzene acrylate which is a Michael acceptor, and β-ketoester, β-diketone, β-ketone amide or β-ketoanilid as a β-dicarbonyl Michael donor under the presence of organic solvent.