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Polylactide/exfoliated graphite nanocomposites with enhanced thermal stability, mechanical modulus, and electrical conductivity
Abstract
We have prepared a series of polylactide/exfoliated graphite (PLA/EG) nanocomposites by melt‐compounding and investigated their morphology, structures, thermal stability, mechanical, and electrical properties. For PLA/EG nanocomposites, EG was prepared by the acid treatment and following rapid thermal expansion of micron‐sized crystalline natural graphite (NG), and it was characterized to be composed of disordered graphite nanoplatelets. It was revealed that graphite nanoplatelets of PLA/EG nanocomposites were dispersed homogeneously in the PLA matrix without forming the crystalline aggregates, unlike PLA/NG composites. Thermal degradation temperatures of PLA/EG nanocomposites increased substantially with the increment of EG content up to ∼3 wt %, whereas those of PLA/NG composites remained constant regardless of the NG content. For instance, thermal degradation temperature of PLA/EG nanocomposite with only 0.5 wt % EG was improved by ∼10 K over PLA homopolymer. Young's moduli of PLA/EG nanocomposites increased noticeably with the increment of EG content up to ∼3 wt %, compared with PLA/NG composites. The percolation threshold for electrical conduction of PLA/EG nanocomposites was found to be at 3–5 wt % EG, which is far lower graphite content than that (10–15 wt % NG) of PLA/NG composites. © 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 850–858, 2010
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Graphene-based composite materials
Stankovich, S., Dikin, D. A., Dommett, G. H. B., Kohlhaas, K. M., Zimney, E. J., Stach, E. A., Piner, R. D., Nguyen, S. T., & Ruoff, R. S. (2006) · Nature · doi:10.1038/nature04969 · Cited by 12,922
Large-scale production, properties and commercial applications of polylactic acid polymers
Lunt, J. (1998) · Polymer Degradation and Stability · doi:10.1016/s0141-3910(97)00148-1 · Cited by 1,366
Polylactones: 31. Sn(II)octoate-initiated polymerization of L-lactide: a mechanistic study
Kricheldorf, H. R., Kreiser-Saunders, I., & Boettcher, C. (1995) · Polymer · doi:10.1016/0032-3861(95)93928-f · Cited by 411
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Graphene-based polymer nanocomposites
Potts, J. R., Dreyer, D. R., Bielawski, C. W., & Ruoff, R. S. (2011) · Polymer · doi:10.1016/j.polymer.2010.11.042 · Cited by 3,123
The mechanics of graphene nanocomposites: A review
Young, R. J., Kinloch, I. A., Gong, L., & Novoselov, K. S. (2012) · Composites Science and Technology · doi:10.1016/j.compscitech.2012.05.005 · Cited by 1,294
Polylactide (PLA)-based nanocomposites
Raquez, J.-M., Habibi, Y., Murariu, M., & Dubois, P. (2013) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2013.05.014 · Cited by 1,209
Graphene-polymer nanocomposites for structural and functional applications
Hu, K., Kulkarni, D. D., Choi, I., & Tsukruk, V. V. (2014) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2014.03.001 · Cited by 1,085
Functional Composite Materials Based on Chemically Converted Graphene
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Metadata
- Authors
- Kim, I., & Jeong, Y. G.
- Venue
- Journal of Polymer Science Part B: Polymer Physics
- Publisher
- Wiley
- Published
- 2010-03-04
- Volume
- 48
- Issue
- 8
- Pages
- 850-858
- ISSN
- 0887-6266 (ISSN-L)
- 1099-0488
- OpenAlex
- W2100046972
- Cited by
- 331
- References
- 3
- FWCI
- 16.22
- Type
- journal article
- Language
- en
- Open access
- closed
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