TiO2/PVP 나노섬유의 제조
Fabrication of axially aligned TiO2/PVP nanofibers
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초록
TiO2/PVP 나노섬유의 배열을 증진시키기 위하여 콜렉터 접지방법을 변화시키면서 전기방사하였다. 한축방향의 배열을 가진 섬유를 만들기 위하여 두개의 전도성 기판을 콜렉터로 사용하여 전기방사하였다. 또한, 두축방향의 섬유배열 을 하기위하여 90 o 각도로 배치된 콜렉터를 타이머로 조절하면서 방사하였다. 전기방사 시 나노섬유는 콜렉터 전극사이에 서 전기장 효과에 의해 퍼지는 현상이 관찰되었다. 실험결과, 후자의 TiO2/PVP 나노섬유 경우 콜렉터에 정체된 전하의 해 소로 인하여 방향성에 더 효과적이었다.
Abstract
TiO2/PVP nanofibers were electrospun by varying the collector grounding design to improve the axial alignment offibers. The collectors are composed of two pieces of conductive substrates separated by a gap for the uniaxial alignment offibers (X design). The collectors consisting of two sets of substrates placed by 90o (XY design) equipped with a timer arealso prepared for biaxial alignment of fibers. Both collectors show that the charged nanofibers are stretched to span across thegap between the electrodes. Experimental results reveal that the latter collector is more effective on the directionality of2/PVP nanofibers due to the dissipation of accumulated electric charge between the collectors.Key words Nanofiber, Electrospinning, TiO2, PVP, Alignment, CollectorTiO2/PVP ..... .....†..... ...... , .. , 608-736(2007. 1. 12. .. )(2007. 1. 25. .... ). . TiO2/PVP ..... ... ..... ... ... ..... ...... ....... . .....
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