Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Study of Polycarbonate/MWNT Electrospun Nanofiber and Its Multi-Filament Application

전기방사에 의한 카본나노튜브/폴리카보네이트 나노섬유와 복합필라멘트 특성에 관한 연구

  • Choi, Jae-Won (Department of Chemical & Environmental Engineering, Soongsil University) ;
  • Lee, Kwang-Hoon (Department of Chemical & Environmental Engineering, Soongsil University) ;
  • Hwang, Seok-Ho (Korea Institute of Industrial Technology) ;
  • Kim, Jeong-Yeol (Korea Institute of Industrial Technology) ;
  • Lee, Sang-Won (Department of Chemical & Environmental Engineering, Soongsil University) ;
  • Huh, Wansoo (Department of Chemical & Environmental Engineering, Soongsil University)
  • 최재원 (숭실대학교 환경화학공학과) ;
  • 이광훈 (숭실대학교 환경화학공학과) ;
  • 황석호 (한국생산기술연구원) ;
  • 김정렬 (한국생산기술연구원) ;
  • 이상원 (숭실대학교 환경화학공학과) ;
  • 허완수 (숭실대학교 환경화학공학과)
  • Received : 2008.05.21
  • Accepted : 2008.05.30
  • Published : 2008.08.10
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Abstract

Over the past decade, there have been significant advancement in the field of electrospinning area. This study has focused on preparing yarn using polycarbonate (PC) nanofibers including modified multi-walled carbon nanotube (mMWNT) by solution electrospinning process using the mixture of solvents consisting of tretrahydronfuran (THF) and N,N-dimethylformamide (DMF). In order to enhance the dispersion, MWNT was chemically modified. TEM analysis for the prepared PC/mMWNT nanofibers reveals that mMWNT was well-dispersed into the PC nanofiber matrix. Also with increasing contents of mMWNT, thermal stability of PC/mMWNT nanofibers was improved than that of PC nanofibers. Moreover when 3 to 5 wt% of mMWNT was added, the nanofibers showed good electrical properties expecting antistatic effect, ranging 109.1~109.5 ${\Omega}$. It was confirmed that the multi-filament fibers using PC/mMWNT had $60{\sim}100{\mu}m$ in diameter and 4~5 cm in length.

전기방사에 대한 연구는 지난 10여 년간 의료, 산업용에 적합한 적용 기술 연구로 많은 발전을 하고 있다. 본 연구에서는 용액전기방사법으로 다중벽탄소나노튜브(MWNT)를 함유하는 폴리카보네이트(PC) 나노섬유와 복합필라멘트 섬유를 제조하였다. 폴리카보네이트 나노섬유 내에서의 분산성을 향상시키기 위하여 다중벽탄소나노튜브를 in-situ 방법으로 개질하였다. THF와 DMF의 혼합용매를 사용하여 다중벽 탄소나노튜브가 함유된 폴리카보네이트(PC/mMWNT) 나노섬유를 제조하였다. 제조된 PC/mMWNT 나노섬유의 TEM 사진 분석결과 다중벽 탄소나노튜브가 폴리카보네이트 나노섬유 내에 잘 분산되어 있음을 확인하였다. 또한, 다중벽탄소나노튜브의 함량이 증가할수록 순수 폴리카보네이트 섬유에 비해 열안정성이 우수하였으며, 표면저항기 측정결과 3 wt%와 5 wt%에서 109.1~109.5 ${\Omega}$의 대전방지효과를 기대할 수 있는 전기적 특성을 확인하였다. 또한 PC/mMWNT를 이용하여 제조된 멀티필라멘트 섬유는 SEM을 분석결과 직경 $60{\sim}100{\mu}m$, 길이 4~5 cm의 멀티필라멘트(Multi-Filament yarn)가 제조되었음을 확인하였다.

Keywords

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