Experimental and multiscale modeling of thermal conductivity and elastic properties of PLA/expanded graphite polymer nanocomposites

被引：73

作者：

Mortazavi, Bohayra ^{[1
,2
]}

Hassouna, Fatima ^{[1
]}

Laachachi, Abdelghani ^{[1
]}

Rajabpour, Ali ^{[3
]}

Ahzi, Said ^{[2
]}

Chapron, David ^{[4
]}

Toniazzo, Valerie ^{[1
]}

Ruch, David ^{[1
]}

机构：

[1] Ctr Rech Publ Henri Tudor, Dept Adv Mat & Struct, L-4002 Esch Sur Alzette, Luxembourg

[2] Univ Strasbourg, IMFS, F-67000 Strasbourg, France

[3] Imam Khomeini Int Univ, Dept Mech Engn, Qazvin 3414916818, Iran

[4] Univ Paul Verlaine Metz, LMOPS, F-57070 Metz, France

来源：

THERMOCHIMICA ACTA | 2013年 / 552卷

关键词：

Expanded graphite; Nanocomposites; Thermal conductivity; Elastic modulus; Multiscale; FEW-LAYER GRAPHENE; MOLECULAR-DYNAMICS; EXPANDED GRAPHITE; ELECTRICAL-CONDUCTIVITY; PYROLYTIC-GRAPHITE; POLY(LACTIC ACID); COMPOSITES; INTERCALATION; ENERGY; EXFOLIATION;

D O I：

10.1016/j.tca.2012.11.017

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

We developed experimental as well as theoretically based hierarchical multiscale procedures for the evaluation of effective elastic modulus and thermal conductivity of poly-lactide (PLA)/expanded graphite (EG) nanocomposites. The incorporation of EG fillers into PLA was carried out by a twin-screw micro-extruder. The dispersion/delamination of EG in PLA was studied using Raman spectroscopy, SEM and TEM. In the multiscale modeling, the thermal conductivity constants and stiffness tensor of EG were first acquired by the means of molecular dynamics (MD) simulations. Using the fillers' properties obtained by the MD, we developed finite elements (FE) models to evaluate the effective thermal conductivity and elastic modulus of PLA/EG nanocomposites. Our results, for a wide range of temperatures revealed the efficiency in thermal and mechanical reinforcement of PLA by incorporation of EG nanoparticles. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：106 / 113

页数：8

共 46 条

[1] Three-dimensional reconstruction and homogenization of heterogeneous materials using statistical correlation functions and FEM
Baniassadi, M.
Mortazavi, B.
Hamedani, H. Amani
Garmestani, H.
Ahzi, S.
Fathi-Torbaghan, M.
Ruch, D.
Khaleel, M.
[J]. COMPUTATIONAL MATERIALS SCIENCE, 2012, 51 (01) : 372 - 379
[2] ELASTIC CONSTANTS OF COMPRESSION-ANNEALED PYROLYTIC GRAPHITE
BLAKSLEE, OL
[J]. JOURNAL OF APPLIED PHYSICS, 1970, 41 (08) : 3373 - +
[3] Elasticity of single-crystalline graphite: Inelastic x-ray scattering study
Bosak, Alexey
Krisch, Michael
Mohr, Marcel
Maultzsch, Janina
Thomsen, Christian
[J]. PHYSICAL REVIEW B, 2007, 75 (15)
[4] Dynamic Mechanical Properties of PMMA/Organoclay Nanocomposite: Experiments and Modeling
Boumbimba, Rodrigue Matadi
Ahzi, Said
Bahlouli, Nadia
Ruch, David
Gracio, Jose
[J]. JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME, 2011, 133 (03):
[5] A second-generation reactive empirical bond order (REBO) potential energy expression for hydrocarbons
Brenner, DW
Shenderova, OA
Harrison, JA
Stuart, SJ
Ni, B
Sinnott, SB
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2002, 14 (04) : 783 - 802
[6] INTERCALATION AND OXIDATION EFFECTS ON GRAPHITE OF A MIXTURE OF SULPHURIC AND NITRIC ACIDS
CARR, KE
[J]. CARBON, 1970, 8 (02) : 155 - &
[7] Exfoliation of graphite flake and its nanocomposites
Chen, GH
Wu, DJ
Weng, WU
Wu, CL
[J]. CARBON, 2003, 41 (03) : 619 - 621
[8] Influence of constituent properties and microstructural parameters on the tensile modulus of a polymer/clay nanocomposite
Fertig, RS
Garnich, MR
[J]. COMPOSITES SCIENCE AND TECHNOLOGY, 2004, 64 (16) : 2577 - 2588
[9] Fukushima H., 2003, Annual Technical Conference - Society o f Plastics Engineers, P2230
[10] A literature review of poly(lactic acid)
Garlotta, D
[J]. JOURNAL OF POLYMERS AND THE ENVIRONMENT, 2001, 9 (02) : 63 - 84

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