PAN/MWNT 나노섬유의 제조와 특성 분석 = Preparation and Characterization of PAN/MWNT Nanofibers

다국어 초록 (Multilingual Abstract)

We have synthesized three different PAN copolymers with methyl acrylate (MA) and/or itaconic acid (IA) comonomers and carried out their chemical and compositional analyses. In addition, PAN and PAN/MWNT nanofibers were prepared by electrospinning PAN copolymer solutions with various MWNT contents and characterized their morphology and thermal behavior by using FE-SEM and DSC. It was found from SEM images that the PAN nanofiber with IA (2 mol%) comonomer has much smaller fiber diameter and narrower diameter distribution compared to PAN nanofibers with MA/IA (1/1 mol%) and MA (2 mol%) comonomers. For PAN/MWNT nanofibers, the fiber diameters were decreased with increasing the MWNT content. From DSC heating thermograms, it was revealed that the exothermic cyclization reactions started at lower temperatures for the PAN nanofiber with IA comonomer as well as for the PAN/MWNT nanofibers with higher MWNT contents. Overall, it was valid to conclude that the IA comonomer and the MWNT content contribute to the smaller fiber diameters and the lower temperature-initiated cyclization reactions of PAN/MWNT nanofibers which can be used as precursors for manufacturing activated carbon nanofibers.

참고문헌 (Reference)

1 백두현, "전기방사 코폴리에테르에스터 나노복합체 섬유의 특성분석" 한국섬유공학회 43 (43): 298-304, 2006

2 신익기, "이타콘산을 함유한 폴리아크릴로니트릴 공중합체의 섬유제조 및 그 물성에 관한 연구" 한국염색가공학회 14 (14): 33-39, 2002

3 지민호, "동시 중합법으로 제조된 폴리에틸렌나프탈레이트/MWNT 나노복합체의 제조와 물성(I)-합성과 특성 분석-" 한국섬유공학회 45 (45): 26-32, 2008

4 S.-H. Tan, "Systematic Parameter Study for Ultra-fine Fiber Fabrication via Electrospinning Process" 46 : 6128-6134, 2005

5 M. M. Coleman, "Studies of the Degradation of Acrylonitrile/Acrylamide Copolymers as a Fuction of Composition and Temperature" 21 : 255-267, 1983

6 M. M. Coleman, "Studies of the Degradation of Acrylonitrile/ Acrylamide Copolymers as a Function of Composition and Temperature" (21) : 255-267, 1983

7 C. H. Gi, "Stabilization and Carbonization of Gel Spun Polyacrylonitrile/Singlewall Carbon Nanotube Composite Fibers" 48 : 3781-3789, 2007

8 H. G. Chae, "Stabilization and Carbonization of Gel Spun Polyacrylonitrile/ Single Wall Carbon Nanotube Composite Fibers" 48 : 3781-3789, 2007

9 T. Uchida, "Single Wall Carbon Nanotube Dispersion and Exfoliation in Polymers" 98 : 985-989, 2005

10 T. V. Sreekumar, "Polyacrylonitrile Single- Walled Carbon Nanotube Composite Fibers" 16 : 58-61, 2004

11 H. G. Chae, "Oriented and Exfoliated Single Wall Carbon Nanotubes in Polyacrylonitrile" 47 : 3494-3504, 2006

12 D. H. Reneker, "Nanofiber Garlands of Polycaprolactone by Electrospinning" 42 : 6785-6794, 2002

13 Q. Ouyang, "Mechanism and Kinetics of the Stabilization Reactions of Itaconic Acidmodified Polyacrylonitrile" 93 : 1415-1421, 2008

14 M. M. Coleman, "Fourier Transform IR Studies of the Degradation of Polyacrylonitrile Copolymers" 19 : 559-570, 1981

15 K. Frank, "Electrospinning of Continuous Carbon Nanotube-filled Nanofiber Yarns" 15 : 1161-1165, 2003

16 P. Bajaj, "Effect of Reaction Medium on Radical Copolymerization Acrylonitrile with Vinyl Acids" 9 : 1640-1652, 2000

17 S . H. L ee, "Effect o f Polyvinylpyrrolidone on the Copolymerization of Acrylonitrile and Methylacrylate Initiated by Azobisisobutyronitrile in Dimethylformamide Solution System" 34 : 591-597, 1997

18 R. J. Devasia, "Copolymerization of Acrylonitrile with Itaconic Acid in Dimethylformamide: Effect of Triethylamine" 39 : 537-544, 2003

19 K. Esumi, "Chemical Treatment of Carbon Nanotubes" 34 : 279-281, 1996

20 W. Y. Qin, "Carbon Nanotube- Reinforced Polyacrylonitrile Nanofibers by Vibration- Electrospinning" 56 : 1367-1370, 2007

21 J. J. Ge, "Assembly of Well-Aligned Multiwalled Carbon Nanotubes in Confined Polyacrylonitrile Environments: Electrospun Composite Nanofiber Sheets" 48 : 15754-15761, 2004

22 I. G. Shin, "A Study on the Synthesis and Characterization of Poly(Acrylonitrile-Methyl acrylate-Itaconic acid) Initiated by Redox System in Zinc Chloride Solution(II)" 38 : 265-271, 2001

23 I. G. Shin, "A Study on the Synthesis and Characterization of Poly(Acrylonitrile-Methyl acrylate-Itaconic acid) Initiated by Redox System in Zinc Chloride Solution" 37 : 493-499, 2000

24 H. G. Chae, "A Comparison of Reinforcement Efficiency of Various Types of Carbon Nanotubes in Polyacrylonitrile Fiber" 46 : 10925-10935, 2005