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AssigneeKorea Research Institute of Chemical Technology
InventorsJae Rock Lee, Seung Yong Jee, Hyo Joong Kim, Young Taik Hong, Seok Kim, Soo Jin Park
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A filament type nano-sized lone fiber and a method of producing the same are disclosed. In the method, a spinning solution or a spinning melt is electro-spun in drops using a spinneret to which a critical voltage is applied, and the spun drops are continuously collected on a multi-collector. The spinning solution is produced dissolving a blend or copolymer consisting of two or more kinds of polymers in a solvent. The spinning melt is produced by melting the polymers. The multi-collector is selected from the group consisting of a plate type collector, a roll type collector, and a combination thereof. The filament type nano-sized long fiber is processed into a yarn through one step during the electrospinning process, and thus, mechanical properties are better than those of conventional nanofiber non-woven fabric. Consequently, the filament type nano-sized long fiber can be utilized for the extended application.
A filament bundle type nano-sized fiber produced through a process comprising electrospinning a spinning solution or a spinning melt in drops using a spinneret to which a critical voltage is applied, and continuously collecting the spun drops on a multi-collector, the spinning solution having been produced by dissolving a copolymer consisting of two or more kinds of polymers in a solvent, the spinning melt being produced by melting the polymers, and the multi-collector is selected from the group consisting of a plate type collector, a roll type collector, and a combination thereof wherein each of the polymers is a polyamide-polyimide copolymer including a compound expressed by Formula 1, in which m is 1-99 mol %, and the other compound expressed by Formula 2, in which n is 1-99 mol %:
Dependencies are inferred from the claim text.