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Structured Polyethylene Nanocomposites: Effects of Crystal Orientation and Nanofiller Alignment on High Field Dielectric Properties

Published online by Cambridge University Press:  20 December 2016

Bo Li ,
C. I. Camilli ,
P. I. Xidas ,
K. S. Triantafyllidis  and
E. Manias
Bo Li
Affiliation:
Materials Science and Engineering, Penn State University, University Park, PA 16802, U.S.A
C. I. Camilli
Affiliation:
Materials Science and Engineering, Penn State University, University Park, PA 16802, U.S.A
P. I. Xidas
Affiliation:
Materials Science and Engineering, Penn State University, University Park, PA 16802, U.S.A Chemistry Department, Aristotle University of Thessaloniki, GR54006 Thessaloniki, GREECE
K. S. Triantafyllidis
Affiliation:
Chemistry Department, Aristotle University of Thessaloniki, GR54006 Thessaloniki, GREECE
E. Manias*
Affiliation:
Materials Science and Engineering, Penn State University, University Park, PA 16802, U.S.A
*
*address correspondence to manias@psu.edu;
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Abstract

In previous work we have shown that aligned high aspect-ratio (pseudo-2D) nanofillers can yield large dielectric breakdown strength (EBD) improvements for a nanocomposite with a low-crystallinity polyethylene matrix. Here, we report a systematic study which delineates the contributions of the aligned inorganic fillers and of the aligned polymer crystallites in the overall EBD improvement achieved in the nanocomposites. Specifically, extrusion blown-molded polyethylene/montmorillonite nanocomposite films were cold-stretched to various strains, to further align the nanoparticles parallel to the film surface; this filler alignment is accompanied by a commensurate alignment of the polymer crystallites, especially those heterogeneously nucleated by the fillers. A systematic series of films are studied, with increased extent of alignment of the fillers and of the crystalline lamellae (quantified through Hermans orientation order parameters from 2D X-ray diffraction studies) and the aligned structure is correlated to the electric field breakdown strength (quantified through Weibull failure studies). It is shown that aligned pseudo-2D inorganic nanofillers provide additional strong improvements in EBD, improvements that are beyond, and added in excess of, any EBD increases due to polymer-crystal orientation.

Keywords

dielectric propertiesmorphologycomposite
Type
Articles
Information
MRS Advances , Volume 2 , Issue 6: Biomaterials and Soft Materials , 2017 , pp. 363 - 368
Copyright
Copyright © Materials Research Society 2016 

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Footnotes

†

undergraduate student.

References

REFERENCES

Fothergill, J.C., Electrical degradation and breakdown in polymers. (IET, 1992).Google Scholar
Blythe, A.R., Electrical properties of polymers. (Cambridge University Press, 2005).Google Scholar
Hosier, I.L., Vaughan, A.S., Swingler, S.G., J Polym Sci B: Polym Phys 38, 2309 (2000).3.0.CO;2-7>CrossRefGoogle Scholar
4. Green, C.D., Ph.D. thesis, University of Southampton, 2008.Google Scholar
Tanaka, T., Okamoto, T., Hozumi, N., Suzuki, K., IEEE Trans Dielectr Electr Insul 3, 345 (1996)CrossRefGoogle Scholar
Hozumi, N., Ishida, M., Okamoto, T., et al., IEEE Trans Dielectr Electr Insul 25, 707 (1990).CrossRefGoogle Scholar
Vaia, R.A., Maguire, J.F., Chemistry of Materials, 19, 2736 (2007).CrossRefGoogle Scholar
Nelson, J.K., Hu, Y., J Phys. D-Appl. Phys. 38 (2), 213-222 (2005).CrossRefGoogle Scholar
Polizos, G., Tomer, V., Manias, E., Randall, C.A., J Appl. Phys. 108, 074117 (2010).CrossRefGoogle Scholar
Tomer, V., Polizos, G., Randall, C.A., Manias, E., J Appl. Phys. 109, 074113 (2011).CrossRefGoogle Scholar
Tomer, V., Randall, C.A., J Appl. Phys. 104, 074106 (2008).CrossRefGoogle Scholar
Che, J., Locker, C. R., Lee, S., Rutledge, G. C., et al., Macromolecules, 46(13), 5279 (2013).CrossRefGoogle Scholar
Wilchinsky, Z.W., J Polym. Sci. Part B: Polym. Phys. 6 (1), 281-288 (1968).Google Scholar
Huy, T. A., Luepke, T. and Radusch, H.-J., J Appl. Polym. Sci. 80, 148 (2001).3.0.CO;2-W>CrossRefGoogle Scholar
Sasaguri, K., Hoshino, S., Stein, R.S., J Appl. Phys. 35, 47–54 (1964).CrossRefGoogle Scholar
Weibull, W., Journal of applied mechanics 18, 293–297 (1951).CrossRefGoogle Scholar
Yahagi, K., IEEE Trans Electr Insul, EI-15, 241 (1980).CrossRefGoogle Scholar
Sung-Ik, S., Dae-Hee, C., Bok-Hee, Y., Takahashi, T., Okamoto, T., Proceedings of 2005 International Symposium on Electrical Insulating Materials (ISEIM 2005).Google Scholar