Article
  • Fabrication of Hybrid Nanocomposites of PAA-grafted Graphene and Pd Nanoparticles having POSS (Pd-POSS)
  • Lim JH, Ko YW, Kim KY, Kim KM
  • 그래핀과 실세스키옥세인을 포함한 팔라듐 나노입자와의 나노복합체 제조
  • 임정혁, 고일웅, 김기영, 김경민
Abstract
The palladium nanoparticles were self-assembled to make Pd-POSS using POSS-NH3+ (polyhedral oligomeric silsesquioxane) as a crosslinker. Graphene oxide (GO) was produced by the reaction of graphite under a strong acid and oxidizer and poly(acrylic acid) (PAA) was covalently grafted on the surface of graphene to make PAA-grafted graphene through the radical polymerization of acrylic acid and GO along with a reduction process under NaBH4. The nanocomposites of Pd-POSS and PAA-grafted graphene were fabricated via ionic interactions between positively charged Pd-POSS and negatively charged PAA-grafted graphene. Pd-POSS nanoparticles were attached to the surface of PAA-grafted graphene through ionic interactions. The thermal stability of Pd-POSS/PAA-grafted graphene was higher than that of PAA and PAA-grafted graphene. The composition, structure, surface morphology, and thermal stability of the Pd-POSS/PAA-grafted graphene were studied by FE-SEM, AFM, TEM, FTIR, and TGA.

케이지 구조의 POSS-NH3+를 이용하여 팔라듐 입자들의 자기 조직화로 인한 구조가 제어된 Pd-POSS 나노입자를 제조하였다. 또한 흑연을 강산과 산화제를 이용하여 산화된 그래핀 옥사이드(GO)를 합성한 후 얻어진 GO와 NaBH4와의 반응을 통하여 그래핀을 제조하였다. 합성된 그래핀과 acrylic acid와 라디칼 중합 반응을 통하여 그래핀표면에 poly(acrylic acid)(PAA)가 결합된 PAA-grafted graphene을 얻었다. Pd-POSS와 PAA-grafted graphene을 이용한 나노복합체는 POSS-NH3+로 인하여 양전하를 띠는 Pd-POSS 나노입자와 PAA로 인하여 음전하를 띠는 PAAgrafted graphene와의 정전기적 인력을 이용하여 제조하였다. Pd-POSS 나노입자가 PAA로 치환된 그래핀 표면에 정전기적 인력으로 결합되어 있고, 나노복합체의 열적 안정성은 PAA와 PAA-grafted graphene 보다 우수한 것을 확인할 수 있었다. 제조된 Pd-POSS/PAA-grafted graphene 나노복합체의 구조 및 형태와 열적 안정성은 FE-SEM, AFM, TEM, EDX, FTIR과 TGA를 통하여 분석하였다.

Keywords: graphene oxide; polyhedral oligomeric silsesquioxane (POSS); ionic interactions; hybrid nanocomposites.

References
  • 1. Novoselov KS, Science., 306, 666 (2004)
  •  
  • 2. Zhu YW, Murali S, Cai WW, Li XS, Suk JW, Potts JR, Ruoff RS, Adv. Mater., 22(35), 3906 (2010)
  •  
  • 3. Park S, Ruoff RS, Nat. Nanotechnol., 4, 217 (2009)
  •  
  • 4. Dreyer DR, Park S, Bielawski CW, Ruoff RS, Chem.Soc. Rev., 39, 228 (2010)
  •  
  • 5. He H, Klinowski J, Foster M, Lert A, Chem. Phys. Lett., 287, 53
  •  
  • 6. Stankovich S, J. Mater. Chem., 16, 155 (2006)
  •  
  • 7. Stankovich S, Carbon., 45, 1558 (2007)
  •  
  • 8. Moon IK, LEE JH, Ruoff RS, Lee HY, Nat.Commun., 1, 73 (2010)
  •  
  • 9. Dan L, Nat. Nanotechnol., 3, 101 (2008)
  •  
  • 10. Park S, Chem. Mater., 20, 6592 (2008)
  •  
  • 11. Park S, An J, Jung I, Nano Lett., 9, 1593 (2009)
  •  
  • 12. Muszynski R, Seger B, Kamat PV, J. Phys. Chem. C., 112, 5263 (2008)
  •  
  • 13. Kim KM, Keum DK, Chujo Y, Macromolecules, 36(3), 867 (2003)
  •  
  • 14. Kim KM, Chujo Y, J. Mater. Chem., 13, 1384 (2003)
  •  
  • 15. Kim KM, Chujo Y, J. Polym. Sci. A: Polym. Chem., 41(9), 1306 (2003)
  •  
  • 16. Kim KM, Adachi K, Chujo Y, Polymer, 43(4), 1171 (2002)
  •  
  • 17. Kim KM, Chujo Y, J. Polym. Sci. A: Polym. Chem., 39(22), 4035 (2001)
  •  
  • 18. Naka K, Itoh H, Chujo Y, Nano Lett., 2, 1183 (2002)
  •  
  • 19. Luecke S, Stoppek-Langner K, Appl. Aurf. Sci., 144, 713 (1999)
  •  
  • 20. Li G, Wang L, Ni H, Pittman CU, J. Inorg. Organomet.Polym., 11, 123 (2001)
  •  
  • 21. Fu BX, Yang L, Somani RH, Zong SX, Hsiao BS, Phillips S, Blanski R, Ruth P, J. Polym. Sci. B: Polym. Phys., 39(22), 2727 (2001)
  •  
  • 22. Fu BX, Gelfer MY, Hsiao BS, Phillips S, Viers B, Blanski R, Ruth P, Polymer, 44(5), 1499 (2003)
  •  
  • 23. Joshi A, Butola BS, Polymer, 45(14), 4953 (2004)
  •  
  • 24. Shen JF, Hu YZ, Li C, Qin C, Shi M, Ye MX, Langmuir, 25(11), 6122 (2009)
  •  
  • 25. Jeon JH, Lim JH, Chujo Y, Kim KM, Polym.(Korea), 33(6), 615 (2009)
  •  
  • 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

  • 2012; 36(5): 656-661

    Published online Sep 25, 2012

  • Received on Apr 11, 2012
  • Accepted on Apr 18, 2012