Article
  • Preparation of MWCNTs/Poly(methyl methacrylate) Composite Particles via the Emulsion Polymerization of Methyl Methacrylate Using MWCNTs Modified by Silanization Reaction and Their Morphological Characteristics
  • Kwon J, Park S, Kim S, Jo J, Han C, Ha KR
  • 실란화 반응으로 표면 개질된 다중벽 탄소나노튜브(MWCNTs)와 Methyl Methacrylate의 유화중합을 통한 MWCNTs/Poly(methyl methacrylate) 복합 입자 제조 및 그 형태학적 특성
  • 권재범, 박성환, 김성훈, 조지은, 한창우, 하기룡
Abstract
In this study, multi-walled carbon nanotubes (MWCNTs) were oxidized with a mixture of nitric acid and sulfuric acid. After oxidation, oxidized MWCNTs were treated with thionyl chloride (SOCl2) and 1,4-butanediol (BD) in sequence at room temperature to introduce hydroxyl groups on the surface of MWCNTs. The prepared MWCNT-OH was silanized with 3-methacryloxypropyltrimethoxylsilane (MPTMS) to make MWCNT-MPTMS. The MWCNT-MPTMS was used as fillers in emulsion polymerization to make MWCNT-MPTMS/PMMA composite particles with 3 kinds of emulsifiers, hexadecyltrimethylammoniumbromide (CTAB) as a cationic, sodium dodecylbenzene sulfonate (SDBS) as an anionic and polyethylene glycol tert-octylphenyl ether (Triton X-114) as a nonionic emulsifier. Morphologies of composite emulsions were confirmed by a particle size analyzer (PSA) and a scanning electron microscope (SEM). Morphologies of emulsion polymerized MWCNT-MPTMS/PMMA with SDBS showed more uniform particle size distribution compared to those of other two emulsifiers used emulsions. MWCNT-MPTMS/PMMA showed 3.4 oC higher Tg compared to pristine MWCNT/PMMA due to covalent bond formation at interface of MWCNT-MPTMS and PMMA.

본 연구에서는 다중벽 탄소나노튜브(MWCNTs)를 질산과 황산의 혼산으로 산화시켜 표면에 카르복시기를 도입 후, SOCl2와 1,4-butanediol을 사용하여 MWCNT-OH를 제조하였다. 제조된 MWCNT-OH는 3-methacryloxypropyltrimethoxylsilane(MPTMS)와 실란화 반응으로 methacrylate기가 도입된 MWCNT-MPTMS를 제조하였다. MWCNT-MPTMS와 methyl methacrylate(MMA)를 사용하여 유화중합법으로 MWCNT-MPTMS/PMMA 복합 입자를 제조하였다. 음이온 계면 활성제인 sodium dodecylbenzene sulfonate(SDBS)를 사용하여 유화중합한 MWCNTMPTMS/PMMA는 균일한 입도, 좁은 입도분포 및 계면에서의 화학결합으로 인하여 Tg가 순수 MWCNT를 사용하여 중합한 시료보다 3.4 oC 높아짐을 확인하였다.

Keywords: multi-walled carbon nanotubes; oxidation; hydroxyl group; silane coupling agent; emulsion polymerization.

References
  • 1. Hong SH, Kim MH, Hong CK, Jung DS, Shim SE, Synthetic Met., 158, 900 (2008)
  •  
  • 2. Yun CH, Lee HS, Polym. Sci. Technol., 18(1), 4 (2007)
  •  
  • 3. Park SJ, Cho MS, Lim ST, Choi HJ, Jhon MS, Macromol. Rapid Commun., 24(18), 1070 (2003)
  •  
  • 4. Xie X, Gao L, Carbon, 45, 2365 (2007)
  •  
  • 5. Mathur RB, Pande S, Singh BP, Dhami TL, Polym. Compos., 29, 717 (2008)
  •  
  • 6. Oliva-Aviles AI, Aviles F, Sosa V, Carbon, 49, 2989 (2011)
  •  
  • 7. Kim HJ, Lee HJ, Park JW, J. Adhesion and Interface, 12, 43 (2011)
  •  
  • 8. Ma PG, Kim JK, Tang BZ, Carbon, 44, 3232 (2006)
  •  
  • 9. Joo YT, Jung KH, Kim Y, Polym.(Korea), 35(5), 395 (2011)
  •  
  • 10. Jeong DS, Nam BU, Polym.(Korea), 35(1), 17 (2011)
  •  
  • 11. Lee HJ, Park JS, Lee SR, Kim JM, Chang SM, Korean Chem. Eng. Res., 47(4), 470 (2009)
  •  
  • 12. Datsyuk V, Kalyva M, Papagelis K, Parthenios J, Tasis D, Siokou A, Kallitsis I, Galiotis C, Carbon, 46, 833 (2008)
  •  
  • 13. Prado LASA, Kopyniecka A, Chandrasekaran S, Broza G, Roslaniec Z, Schulte K, Macromol. Mater. Eng., 298, 359 (2013)
  •  
  • 14. Aviles F, Cauich-Rodriguez JV, Rodriguez-Gonzalez JA, May-Pat A, eXPRESS Polym. Lett., 5, 766 (2011)
  •  
  • 15. Park IC, Park M, Kim JK, Lee HJ, Macromol. Res., 6, 498 (2007)
  •  
  • 16. Lee HJ, Jang SH, Chang SM, Kim JM, Korean Chem. Eng. Res., 48(5), 609 (2010)
  •  
  • 17. Lee S, Ha K, Polym.(Korea), 37(6), 777 (2013)
  •  
  • 18. Jang HS, Hong J, Lee J, Shim SE, Korean Chem. Eng. Res., 46(4), 669 (2008)
  •  
  • 19. Kumar P, Bohidar HB, Physicochem. Eng. Aspects, 361, 13 (2010)
  •  
  • 20. Chen Y, Gunasinghe N, Wang XQ, Pang Y, RSC Adv., 3, 25097 (2013)
  •  
  • 21. Choi SM, Doh CW, Kim TH, Korean Patent 10-0874219 (2006)
  •  
  • 22. Jin HJ, Myeong SJ, Kang MS, Korean Patent 10-0728642 (2006)
  •  
  • 23. Colilla M, Salinas AJ, Regi MV, Chem. Mater., 18, 5676 (2006)
  •  
  • 24. Doh SJ, Kim C, Hwang KS, Lee SG, Lee SJ, Kim HY, Korean Ind. Eng. Chem., 11, 574 (2007)
  •  
  • 25. Kim C, Doh SJ, Hwang KS, Lee SG, Lee SJ, Kim HY, Korean Ind. Eng. Chem., 11, 578 (2007)
  •  
  • 26. Jin MY, Park K, Chung HK, Polym. Sci. Technol., 13(2), 180 (2002)
  •  
  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2015; 39(2): 329-337

    Published online Mar 25, 2015

  • Received on Sep 15, 2014
  • Accepted on Oct 14, 2014