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Nanostructural characterization of carbon nanotubes in laser-sintered polyamide 12 by 3D-TEM

Published online by Cambridge University Press:  24 July 2014

Jiaming Bai ,
Ruth D. Goodridge ,
Richard J.M. Hague ,
Mo Song  and
Hideyuki Murakami
Jiaming Bai
Affiliation:
Additive Manufacturing and 3D-Printing Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom
Ruth D. Goodridge*
Affiliation:
Additive Manufacturing and 3D-Printing Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom
Richard J.M. Hague
Affiliation:
Additive Manufacturing and 3D-Printing Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, United Kingdom
Mo Song
Affiliation:
Department of Materials, Loughborough University, Loughborough, Leicestershire LE11 3TU, United Kingdom
Hideyuki Murakami
Affiliation:
Surface Kinetics Group, High Temperature Materials Unit National Institute for Materials Science, Tsukuba 305-0047, Japan
*
b) Address all correspondence to this author. e-mail: Ruth.Goodridge@nottingham.ac.uk
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Abstract

Three-dimensional transmission electron microscopy (3D-TEM) is a powerful technology that provides 3D characterization of the internal details of a material. In this work, for the first time, 3D-TEM was used to characterize a laser-sintered polymer nanocomposite. The dispersion of carbon nanotubes (CNTs) in the laser-sintered polyamide 12 (PA12)-CNT nanocomposite parts was evaluated. At first, to prepare 3D-TEM samples at specific locations, a focused ion beam technique was used. Then, high quality two-dimensional (2D)-TEM images were achieved at various scanning angles for the PA12-CNT laser-sintered sample. After that, 3D-TEM images were reconstructed by combining all the 2D-TEM images. Results revealed that the CNTs were agglomerate-free in the PA12-CNT parts after laser sintering, which helps to explain previously reported improvement in mechanical properties of laser-sintered PA12-CNT parts.

Keywords

carbon nanotubesnanocomposites3D-TEMlaser sintering

Information

Type
Review Article
Information
Journal of Materials Research , Volume 29 , Issue 17: Focus Issue: The Materials Science of Additive Manufacturing , 14 September 2014 , pp. 1817 - 1823
Copyright
Copyright © Materials Research Society 2014 

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References

REFERENCES

Goodridge, R.D., Tuck, C.J., and Hague, R.J.M.: Laser sintering of polyamides and other polymers. Prog. Mater. Sci. 57(2), 229–267 (2012).Google Scholar
Hopkinson, N., Hague, R.J.M., and Dickens, P.M.: Rapid Manufacturing: An Industrial Revolution for the Digital Age (John Wiley, England, 2006).Google Scholar
Kruth, J.P., Levy, G., Klocke, F., and Childs, T.H.C.: Consolidation phenomena in laser and powder-bed based layered manufacturing. CIRP Ann. Manuf. Technol. 56(2), 730–759 (2007).Google Scholar
Wohlers, T.T.: Wohlers Associates Inc. Wohlers Report 2009: State of the Industry: Annual Worldwide Progress Report (Wohlers Associates, Fort Collins, CO, 2009).Google Scholar
Gibson, I., Rosen, D.W., and Stucker, B.: Additive Manufacturing Technologies: Rapid Prototyping to Direct Digital Manufacturing (Springer, London, 2009).Google Scholar
Goodridge, R.D., Shofner, M.L., Hague, R.J.M., McClelland, M., Schlea, M.R., and Johnson, R.B. et al. : Processing of a polyamide-12/carbon nanofibre composite by laser sintering. Polym. Test. 30(1), 94–100 (2011).Google Scholar
Salmoria, G.V., Paggi, R.A., Lago, A., and Beal, V.E.: Microstructural and mechanical characterization of PA12/MWCNTs nanocomposite manufactured by selective laser sintering. Polym. Test. 30(6), 611–615 (2011).Google Scholar
Lao, S.C., Kan, M.F., Lam, C.K., Chen, D.Z., Koo, J.H., Moon, T. et al. : Polyamide 11-carbon nanotubes nanocomposites: Processing, morphological, and property characterisation. Proceedings of the International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference (Austin, TX, 2010); pp. 98–107.Google Scholar
Athreya, S.R., Kalaitzidou, K., and Das, S.: Mechanical and microstructural properties of nylon-12/carbon black composites: Selective laser sintering versus melt compounding and injection molding. Compos. Sci. Technol. 71(4), 506–510 (2011).Google Scholar
Athreya, S.R., Kalaitzidou, K., and Das, S.: Processing and characterization of a carbon black-filled electrically conductive nylon-12 nanocomposite produced by selective laser sintering. Mater. Sci. Eng., A 527(10–11), 2637–2642 (2010).Google Scholar
Jain, P.K., Pandey, P.M., and Rao, P.V.M.: Selective laser sintering of clay-reinforced polyamide. Polym. Compos. 31(4), 732–743 (2010).Google Scholar
Kim, J. and Creasy, T.S.: Selective laser sintering characteristics of nylon 6/clay-reinforced nanocomposite. Polym. Test. 23(6), 629–636 (2004).Google Scholar
Chung, H. and Das, S.: Functionally graded nylon-11/silica nanocomposites produced by selective laser sintering. Mater. Sci. Eng., A 487(1–2), 251–257 (2008).Google Scholar
Yan, C.Z., Shi, Y.S., Yang, J.S., and Liu, J.H.: A nanosilica/nylon-12 composite powder for selective laser sintering. J. Reinf. Plast. Compos. 28(23), 2889–2902 (2009).Google Scholar
Mittal, V.: Optimization of Polymer Nanocomposite Properties (John Wiley & Sons, Weinheim, 2010).Google Scholar
Bai, J., Goodridge, R.D., Hague, R.J.M., and Song, M.: Improving the mechanical properties of laser-sintered polyamide 12 through incorporation of carbon nanotubes. Polym. Eng. Sci. 53(9), 1937–1946 (2013).Google Scholar
Bai, J., Goodridge, R.D., Hague, R.J.M., Song, M., and Okamoto, M.: Influence of carbon nanotubes on the rheology and dynamic mechanical properties of polyamide-12 for laser sintering. Polym. Test. 36, 95–100 (2014).Google Scholar
Yan, C.Z., Shi, Y.S., Yang, J.S., and Liu, J.H.: An organically modified montmorillonite/nylon-12 composite powder for selective laser sintering. Rapid Prototyping J. 17(1), 28–36 (2011).Google Scholar
Ajayan, P.M., Schadler, L.S., Giannaris, C., and Rubio, A.: Single-walled carbon nanotube–polymer composites: Strength and weakness. Adv. Mater. 12(10), 750–753 (2000).3.0.CO;2-6>CrossRefGoogle Scholar
Xie, X.L., Mai, Y.W., and Zhou, X.P.: Dispersion and alignment of carbon nanotubes in polymer matrix: A review. Mater. Sci. Eng., R 49(4), 89–112 (2005).Google Scholar
Frank, J.A.: Electron Tomography: Three-Dimensional Imaging with the Transmission Electron Microscope (Plenum Press, New York, 1992).Google Scholar
Kohjiya, S., Katoh, A., Shimanuki, J., Hasegawa, T., and Ikeda, Y.: Three-dimensional nano-structure of in situ silica in natural rubber as revealed by 3D-TEM/electron tomography. Polymer 46(12), 4440–4446 (2005).Google Scholar
Midgley, P.A. and Weyland, M.: 3D electron microscopy in the physical sciences: The development of Z-contrast and EFTEM tomography. Ultramicroscopy 96(3–4), 413–431 (2003).CrossRefGoogle ScholarPubMed
de Jong, K.P. and Koster, A.J.: Three-dimensional electron microscopy of mesoporous materials—Recent strides towards spatial imaging at the nanometer scale. ChemPhysChem 3(9), 776–780 (2002).Google Scholar
Cai, D., Jin, J., and Song, M.: UK Patent WO/2009/034361, 2009.Google Scholar
Koster, A.J., Chen, H., Sedat, J.W., and Agard, D.A.: Automated microscopy for electron tomography. Ultramicroscopy 46(1–4), 207–227 (1992).Google Scholar
Mayer, J., Giannuzzi, L.A., Kamino, T., and Michael, J.: TEM sample preparation and FIB-induced damage. MRS Bull. 32(5), 400–407 (2007).Google Scholar
Zarringhalam, H., Majewski, C., and Hopkinson, N.: Degree of particle melt in nylon-12 selective laser-sintered parts. Rapid Prototyping J. 15(2), 126–132 (2009).Google Scholar