Article
  • Influence of Functional Groups on the Surface of Carbon Nanotube on Mechanical and Thermal Properties of Carbon Nanotube/Polymer Composites
  • Ham EK, Choi WK, Kim YK, Seo MK
  • 탄소나노튜브 표면 관능기가 탄소나노튜브/고분자 복합재료의 기계적 및 열적 특성에 미치는 영향
  • 함은광, 최웅기, 김영근, 서민강
Abstract
The influence of carbon nanotube (CNT) functional groups on mechanical and thermal properties of CNT/polymer composites was investigated. The functional groups of the CNT were quantitatively analyzed using X-ray photoelectron spectroscopy. The composites were prepared by adding the 0.7 wt% acid-treated CNT in the epoxy resins and vinyl ester resins, respectively. As a result, the CNT/epoxy composites showed the highest tensile and flexural properties upon adding the 8 M HNO3-treated CNT. Tensile and thermal properties of the CNT/vinyl ester composites were improved by adding H2SO4/HNO3-treated CNT. Thermal conductivities of CNT/epoxy composites and CNT/vinyl ester composites were improved in 8M HNO3-treated CNT. The introduction of carbonyl group (C=O) on CNT led to improvement of interfacial bonding in CNT/epoxy composites. The increase in the content of carboxyl group (O-C=O) on CNT contributed to increase in mechanical properties of CNT/vinyl ester composites. Also, the thermal conductivity of CNT/epoxy composites and CNT/vinyl ester composites were probably influenced by the structure and length of the CNT.

본 연구에서는 탄소나노튜브 관능기의 형태가 탄소나노튜브/고분자 복합재료의 기계적 및 열적 특성에 미치는 영향에 관하여 알아보았다. 탄소나노튜브의 관능기를 정량적으로 분석하기위해 X-선 광전자 분광법을 사용하였다. 복합재료는 에폭시 수지와 비닐 에스터 수지에 산처리된 탄소나노튜브를 0.7 wt%를 첨가하여 제작하였다. 실험결과, 탄소나노튜브/에폭시 복합재료는 8 M 질산으로 처리된 탄소나노튜브를 첨가하였을 때 가장 높은 기계적 특성을 나타내었으며, 탄소나노튜브/비닐 에스터 복합재료는 황산/질산 혼합액으로 처리된 탄소나노튜브를 첨가하였을때 기계적 특성이 향상됨을 알 수 있었다. 열전도도는 에폭시와 비닐 에스터에 8 M 질산으로 처리된 탄소나노튜브가 첨가되었을 때 향상되었다. 이는 탄소나노튜브에 카보닐기(C=O)의 도입으로 탄소나노튜브/에폭시 복합재료의 계면접착력이 개선되었으며, 카복시기(O-C=O)의 증가는 탄소나노튜브/비닐 에스터 복합재료의 기계적 물성 향상에 기여하였다. 또한 탄소나노튜브/에폭시 복합재료와 탄소나노튜브/비닐 에스터 복합재료의 열전도도는 탄소나노튜브의 표면구조와 길이에 영향을 받는다고 판단된다.

Keywords: carbon nanotubes; functional groups; mechanical properties; thermal properties; CNT/polymer composites.

References
  • 1. Choe CR, Compos. Res., 26, 147 (2013)
  •  
  • 2. Kim JA, Seong DG, Kang TJ, Youn JR, Carbon, 44, 1898 (2006)
  •  
  • 3. Seo MK, Park SJ, Korean Chem. Eng. Res., 43, 401 (2006)
  •  
  • 4. Vilatela JJ, Eder D, Chem. Sus. Chem., 5, 2 (2012)
  •  
  • 5. Theodore M, Hosur M, Thomas J, Jeelani S, Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process., 528, 1192 (2011)
  •  
  • 6. Nadler M, Werner J, Mahrholz T, Riedel U, Hufenbach W, Compos. Pt. A-Appl. Sci. Manuf., 40, 932 (2009)
  •  
  • 7. Kim J, Im H, Kim J, Appl. Chem. Eng., 22(3), 266 (2011)
  •  
  • 8. Wepasnick KA, Smith BA, Schrote KE, Wilson HK, Diegelmann SR, Fairbrother DH, Carbon, 49, 24 (2011)
  •  
  • 9. Shin YR, Jeon IY, Baek JB, Carbon, 50, 1465 (2012)
  •  
  • 10. Rosca ID, Watari F, Uo M, Akasaka T, Carbon, 43, 3124 (2005)
  •  
  • 11. Shirazi Y, Tofighy MA, Mohammadi T, Pak A, Appl. Surf. Sci., 257(16), 7359 (2011)
  •  
  • 12. Zhao B, Zhang L, Wang X, Yang J, Carbon, 50, 2710 (2012)
  •  
  • 13. Nasiri A, Shariaty-Niasar M, Rashidi AM, Khodafarin R, Int. J. Heat Mass Transf., 55(5-6), 1529 (2012)
  •  
  • 14. Aviles F, Rodriguez JVC, Tah LM, Pat AM, Coronado RV, Carbon, 47, 2970 (2009)
  •  
  • 15. Ling XL, Wei YZ, Zou LM, Xu S, Appl. Surf. Sci., 276(-), 159 (2013)
  •  
  • 16. Pirlot C, Willems I, Fonseca A, Nagy JB, Delhalle J, Adv. Eng. Mater., 4, 109 (2002)
  •  
  • 17. Lee WH, Kim SJ, Lee WJ, Lee JG, Haddon RC, Reucroft PJ, Appl. Surf. Sci., 181(1-2), 121 (2001)
  •  
  • 18. Datsyuk V, Kalyva M, Papagelis K, Parthenios J, Tasis D, Siokou A, Kallitsis I, Galiotis C, Carbon, 46, 833 (2008)
  •  
  • 19. Vigolo B, Herold C, Mareche JF, Ghanbaja J, Gulas M, Normand FL, Almairac R, Alvarez L, Bantignies JL, Carbon, 48, 949 (2010)
  •  
  • 20. Boehm HP, Carbon, 40, 145 (2002)
  •  
  • 21. Szczypta AF, Dlugon E, Birczynska AW, Nocun M, Blazewicz M, J. Mol. Struct., 1040, 238 (2013)
  •  
  • 22. Terzyk AP, Colloids Surf. A: Physicochem. Eng. Asp., 177, 23 (2001)
  •  
  • 23. Geng Y, Liu MY, Li J, Shi XM, Kim JK, Compos. Pt. A-Appl. Sci. Manuf., 39, 1876 (2008)
  •  
  • 24. Tsuda T, Ogasawara T, Moon SY, Nakamoto K, Takeda N, Shimamura Y, Inoue Y, Compos. Pt. A-Appl. Sci. Manuf., 65, 1 (2014)
  •  
  • 25. Liao SH, Hsiao MC, Yen CY, Ma CCM, Lee SJ, Su A, Tsai MC, Yen MY, Liu PL, J. Power Sources, 195(23), 7808 (2010)
  •  
  • 26. Thostenson ET, Ziaee S, Chou TW, Compos. Sci. Technol., 69, 801 (2009)
  •  
  • 27. Zakaria MR, Akil HM, Kudus MHA, Saleh SSM, Compos. Pt. A-Appl. Sci. Manuf., 66, 109 (2014)
  •  
  • 28. Ma PC, Siddiqui NA, Marom G, Kim JK, Compos. Pt. A-Appl. Sci. Manuf., 41, 1345 (2010)
  •  
  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2015; 39(6): 909-916

    Published online Nov 25, 2015

  • 10.7317/pk.2015.39.6.909
  • Received on May 29, 2015
  • Accepted on Jul 22, 2015