Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Polyelectrolytic Behaviors of Carboxylated MWNT

산처리된 MWNT의 고분자 전해질 거동에 관한 연구

  • Eun, Hee-Chun (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Cho, A-Ra (Department of Organic Materials and Fiber Engineering, Soongsil University) ;
  • Kwark, Young-Je (Department of Organic Materials and Fiber Engineering, Soongsil University)
  • 은희천 (숭실대학교 유기신소재.파이버공학과) ;
  • 조아라 (숭실대학교 유기신소재.파이버공학과) ;
  • 곽영제 (숭실대학교 유기신소재.파이버공학과)
  • Received : 2011.09.04
  • Accepted : 2011.10.18
  • Published : 2011.10.28
⟨ Previous Next ⟩

Abstract

Anionically charged MWNT with anionic carboxylic acid groups were mixed with cationic organic polymers, such as poly(allyamine hydrochloride) (PAH) and, poly(diallyldimethyl-ammonium chloride) (PDDA) to form polyelectrolyte complexes by coulombic interaction. The complexation behavior of the MWNT was affected by pH when mixed with PAH containing weak basic amine groups. By increasing the content of cationic polymer, the zeta potential of MWNT was increased from a negative values to a positive ones. With higher pH, the isoelectric point of anionic MWNT and cationic PAH increased and the saturated zeta potential value with high PAH content due to the less ionized MWNT and more ionized PAH. On the other hand, strong basic PDDA was less affected by changing pH and showed a similar isoelectric point and saturated zeta potential value with high PAH content. The complexation changed the dispersibility of MWNT in water, with the result that the MWNT was precipitated around the isoelectric point but then re-dispersed with higher cationic polymer content. HR-TEM images confirmed that excess PAH completely covered the MWNT.

Keywords

Acknowledgement

Supported by : 한국학술진흥재단

References

  1. S. Iijima, "Helical Microtubules of Graphitic Carbon", Nature, 1991, 354, 56-58. https://doi.org/10.1038/354056a0
  2. A. Thess, R. Lee, P. Nikolaev, H. J. Dai, P. Petit, J. Robert, C. H. Xu, Y. H. Lee, S. G. Kim, A. G. Rinzler, D. T. Colbert, G. E. Scuseria, D. Tomanek, J. E. Fischer, and R. E. Smalley, "Crystalline Ropes of Metallic Carbon Nanotubes", Science, 1996, 273, 483-487. https://doi.org/10.1126/science.273.5274.483
  3. R. H. Baughman, A. A. Zakhidov, and W. A. de Heer, "Carbon Nanotubes - the Route Toward Applications", Science, 2002, 297, 787-792. https://doi.org/10.1126/science.1060928
  4. L. S. Schadler, S. C. Giannaris, and P. M. Ajayan, "Load Transfer in Carbon Nanotube Epoxy Composites", Appl Phys Lett, 1998, 73, 3842-3844. https://doi.org/10.1063/1.122911
  5. B. C. Satishkumar, A. Govindaraj, J. Mofokeng, G. N. Subbanna, and C. N. R. Rao, "Novel Experiments with Carbon Nanotubes: Opening, Filling, Closing and Functionalizing Nanotubes", J Phys D Appl Phys, 1996, 29, 4925-4934.
  6. A. F. Thunemann1, M. Muller, H. Dautzenberg, J.-F. Joanny, and H. Lowen, "Polyelectrolyte Complexes", Adv Polym Sci, 2004, 166, 113-171.
  7. S. A. Sukhishvili, E. Kharlampieva, and V. Izumrudov, "Where Polyelectrolyte Multilayers and Polyelectrolyte Complexes Meet", Macromolecules, 2006, 39, 8873-8881. https://doi.org/10.1021/ma061617p
  8. N. V. Pogodina and N. V. Tsvetkov, "Structure and Dynamics of the Polyelectrolyte Complex Formation", Macromolecules, 1997, 30, 4897-4904. https://doi.org/10.1021/ma9617983
  9. W. Chen and T. J. McCarthy, "Layer-by-Layer Deposition: A Tool for Polymer Surface Modification", Macromolecules, 1997, 30, 78-86. https://doi.org/10.1021/ma961096d
  10. G. Decher, M. Eckle, J. Schmitt, and B. Struth, "Layer-bylayer Assembled Multicomposite Films", Curr Opin Coll Int Sci, 1998, 3, 32-39. https://doi.org/10.1016/S1359-0294(98)80039-3
  11. C. Jiang and V.V. Tsukruk, "Freestanding Nanostructures via Layer-by-Layer Assembly", Adv Mater, 2006, 18, 829-840. https://doi.org/10.1002/adma.200502444
  12. A. P. R. Johnston, C. Cortez, A. S. Angelatos, and F. Caruso, "Layer-by-layer Engineered Capsules and Their Applications", Curr Opin Coll Int Sci, 2006, 11, 203-209. https://doi.org/10.1016/j.cocis.2006.05.001
  13. Y.-L. Liu, W.-H. Chen, and Y.-H. Chang, "Preparation and Properties of Chitosan/Carbon Nanotube Nanocomposites Using Poly (styrene sulfonic acid)-modified CNTs", Carbohyd Polym, 2009, 76, 232-238. https://doi.org/10.1016/j.carbpol.2008.10.021
  14. F. Cheng, P. Imin, S. Lazar, G. A. Botton, G. de Silveira, O. Marinov, J. Deen, and A. Adronov, "Supramolecular Functionalization of Single-Walled Carbon Nanotubes with Conjugated Polyelectrolytes and Their Patterning on Surfaces", Macromolecules, 2008, 41, 9869-9874. https://doi.org/10.1021/ma802147s
  15. B. Pan, D. Cui, C. S. Ozkan, M. Ozkan, P. Xu, T. Huang, F. Liu, H. Chen, Q. Li, R. He, and F. Gao, "Effects of Carbon Nanotubes on Photoluminescence Properties of Quantum Dots", J Phys Chem C, 2008, 112, 939-944. https://doi.org/10.1021/jp068920c
  16. K. J. Loh, J. Kim, J. P. Lynch, N. W. S. Kam, and N. A. Kotov, "Multifunctional Layer-by-layer Carbon Nanotube- Polyelectrolyte Thin Films for Strain and Corrosion Sensing", Smart Mater Struct, 2007, 16, 429-438. https://doi.org/10.1088/0964-1726/16/2/022
  17. E. Jan, J. L. Hendricks, V. Husaini, S. M. Richardson-Burns, A. Sereno, D. C. Martin, and N. A. Kotov, "Layered Carbon Nanotube-Polyelectrolyte Electrodes Outperform Traditional Neural Interface Materials", Nano Lett, 2009, 9, 4012-4018. https://doi.org/10.1021/nl902187z
  18. J. Shen, Y. Hu, C. Qin, and M. Ye, "Layer-by-Layer Self- Assembly of Multiwalled Carbon Nanotube Polyelectrolytes Prepared by in situ Radical Polymerization", Langmuir, 2008, 24, 3993-3997. https://doi.org/10.1021/la703957t
  19. A. Zykwinska, S. Radji-Taleb, and S. Cuenot, "Layer-by- Layer Functionalization of Carbon Nanotubes with Synthetic and Natural Polyelectrolytes", Langmuir, 2010, 26, 2779- 2784. https://doi.org/10.1021/la902818h
  20. S. W. Lee, B.-S. Kim, S. Chen, Y. Shao-Horn, and P. T. Hammond, "Layer-by-Layer Assembly of All Carbon Nanotube Ultrathin Films for Electrochemical Applications", J Am Chem Soc, 2009, 131, 671-679. https://doi.org/10.1021/ja807059k
  21. W. S. Hummers, Jr. and R. E. Offeman, "Preparation of Graphitic Oxide", J Am Chem Soc, 1958, 80, 1339-1339. https://doi.org/10.1021/ja01539a017