Microstructure and electrical conductivity of CNTs/PMMA nanocomposite foams foaming by supercritical carbon dioxide

详细信息    查看全文

• 作者：Huan Yuan 袁欢 ; Yuanlu Xiong 熊远礿/a>…
• 关键词：electrical conductivity ; CNTs ; supercritical foaming ; nanocomposite foams
• 刊名：Journal of Wuhan University of Technology--Materials Science Edition
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：31
• 期：2
• 页码：481-486
• 全文大小：1,436 KB
• 参考文献：[1]Lee LJ, Zeng CC, Cao X, et al. Polymer Nanocomposite Foams[J]. Composites Science and Technology, 2005, 65(15-16): 2344–2363CrossRef
  [2]Verdejo R, Saiz-Arroyo C, Carretero-Gonzalez C, et al. Physical Properties of Silicone Foams Filled with Carbon Nanotubes and Functionalized Graphene Sheets[J]. European Polymer Journal, 2008, 44(9): 2790–2797CrossRef
  [3]Verdejo R, Stampfli R, Alvarez-Lainez M, et al. Enhanced Acoustic Dam-ping in Flexible Polyurethane Foams Filled with Carbon Nanotubes[J]. Composites Science and Technology, 2009, 69(10): 1 564–1 569CrossRef
  [4]Bollen P, Quiévy N, Huynen I, et al. Multifunctional Architectured Materialsfor Electromagnetic Absorption[J]. Scripta Materialia, 2013, 68: 50–54CrossRef
  [5]Huang Y, Li N, Ma YF, et al. The Influence of Single-walled Carbon Nanotube Structure on the Electromagnetic Interference Shielding Efficiency of Its Epoxy Composites[J]. Carbon, 2007, 45: 1614–1621CrossRef
  [6]Thomassin JM, Vuluga D, Alexandre M, et al. A Convenient Route for the Dispersion of Carbon Nanotubes in Polymers: Application to the Preparation of Electromagnetic Interference (EMI) Absorbers[J]. Polymer, 2012, 53(1): 169–174CrossRef
  [7]Thomassin JM, Pagnoulle C, Bednarz L,et al. Foams of Polycaprolactone/MWNT Nanocomposites for Efficient EMI Reduction[J]. Journal of Materials Chemistry, 2008, 18: 792–796CrossRef
  [8]Yang Y, Gupta M, Dudley K. Novel Carbon Nanotube-polystyrene Foam Composites for Electromagnetic Interference Shielding[J]. Nano Letters, 2005, 5(11): 2131–2134CrossRef
  [9]Tran MP, Detrembleur C, Alexandre M, et al. The Influence of Foam Morphology of Multi-walled Carbon Nanotubes/poly(Methyl Methacrylate) Nanocomposites on Electrical Conductivity[J]. Polymer, 2013, 54(13): 3261–3270CrossRef
  [10]Ronald L. Poveda, Nikhil Gupta. Electrical Properties of Carbon Nanofiber Reinforced Multiscale Polymercomposites[J]. Materials and Design, 2014, 56: 416–422CrossRef
  [11]Logakisa E, Pandisa Ch, Peoglosa V, et al. Electrical/Dielectric Properties and Conduction Mechanism in Melt Processed Polyamide/Multi-walled Carbon Nanotubes Composites[J]. Polymer, 2009, 50(21): 5103–5111CrossRef
  [12]Pegel S, Poetschke P, Petzold G, et al. Dispersion, Agglomeration, and Network Formation of Multiwalled Carbon nanotubes in Polycarbonate Melts[J]. Polymer, 2008, 49(4): 974–984CrossRef
  [13]Clayton LM, Sikder AK, Kumar A, et al. Transparent poly(methyl Methacrylate)/Single-walled Carbon Nanotube (PMMA/SWNT) Composite Films with Increased Dielectric Constants[J]. Advanced Functional Materials, 2005, 15(1): 101–6CrossRef
  [14]Xiong YL, Luo GQ, Chen C, et al. In Situ Synthesis of Zerovalent Silver Nanoparticles in Polymethylmethacrylate under High Temperature[J]. Applied Surface Science, 2012, 258: 5822–5826CrossRef
  [15]Chen C, Li JG, Luo GQ, et al. Size-controlled in Situ Synthesis and Photo-responsive Properties of Silver/poly(Methyl Methacrylate) Nanocomposite Films with High Silver Content[J]. Applied Surface Science, 2012, 258: 10180–10184CrossRef
  [16]Du F, Scogna RC, Zhou W, et al. Nanotube Networks in Polymer Nanocomposites: Rheology and Electrical Conductivity[J]. Macromolecules, 2004, 37(24): 9048–9055CrossRef
  [17]Hu G, Zhao C, Zhang S, et al. Low Percolation Thresholds of Electrical Conductivity and Rheology in Poly(Ethylene Terephthalate) through the Networks of Multi-walled Carbon Nanotubes[J]. Polymer, 2006, 47(1): 480–488CrossRef
  [18]Zeng CC, Hossieny N, Zhang C, et al. Synthesis and Processing of PMMA Carbon Nanotube Nanocomposite foams[J]. Polymer, 2010, 51(3): 655–664CrossRef
  [19]Lee WH, Lee SW, Kang TJ, et al. Processing of Polyurethane/Polystyrene Hybrid Foam and Numerical Simulation[J]. Fibers and Polymers, 2002, 3(4): 159–168CrossRef
  [20]Kim C and Youn JR. Environmentally Friendly Processing of Polyurethane Foam for Thermal Insulation[J]. Polymer-Plastics Technology and Engineering, 2000, 39(1): 163–185CrossRef
  [21]Koo MS, Chung K, Youn JR. Reaction Injection Molding of Polyurethane Foam for Improved Thermal Insulation[J]. Polymer Engineering and Science, 2001, 41(7): 1177–1186CrossRef
  [22]Zeng CC, Hossieny N, Zhang C, et al. Morphology and Tensile Properties of PMMA Carbon Nanotubesnanocomposites and Nanocomposites Foams[J]. Composites Science and Technology, 2013, 82: 29–37CrossRef
  [23]Chen LM, Schadler LS, Ozisik R. An Experimental and Theoretical Investigation of the Compressive Properties of Multi-walled Carbon Nanotube/poly(Methyl Methacrylate) Nanocomposite Foams[J]. Polymer, 2011, 52(13): 2899–2909CrossRef
  [24]Wee D, Seong DG, Youn JR. Processing of Microcellular Nanocomposite Foams by Using a Supercritical Fluid[J]. Fibers and Polymers, 2004, 5(2), 160–169CrossRef
  [25]Shaojun Sun, Dongdong Hu, Jie Chen, et al. Effects of Carbon Nanofiber on the Dissolution and Diffusion of CO2 inpolypropylene Nanocomposites[J]. The Journal of Supercritical Fluids, 2014, 94: 252–260CrossRef
  [26]Wang CB, Ying SJ. Batch Foaming of Short Carbon Fiber Reinforced Polypropylene Composites[J]. Fibers and Polymers, 2013, 14(5): 815–821CrossRef
  [27]Gedler G, Antunes M, Velasco JI. Effects of Graphene Nanoplatelets on the Morphology of polycarbonate-graphene Composite Foams Prepared by Supercritical Carbon Dioxide Two-step Foaming[J]. The Journal of Supercritical Fluids, 2015, 100: 167–174CrossRef
  [28]Xiong YL, Shen Q, Yuan H, et al. Foaming of CNTs/PMMA Nanocomposite with Supercritical Carbon Dioxide[J]. Key Engineering Materials, 2012, 508: 61–64CrossRef
  [29]Tsai P-C, Jeng Y-R. Effects of Nanotube Size and Roof-layer Coating on Viscoelastic Properties of Hybrid Diamond-likecarbon and Carbon Nanotube Composites[J]. Carbon, 2015, 86: 163–173CrossRef
  [30]He ZP, Zhang XH, Chen MH, et al. Effect of the Filler Structure of Carbon Nanomaterials on the Electrical, Thermal, and Rheological Properties of Epoxy Ccomposites[J]. Journal of Applied Polymer Science, 2013, 129(6): 3366–3372CrossRef
  [31]Sangram K Rath, Sachin Dubey, Sudheer Kumar G, et al. Multi-Walled CNT-induced Phase Behaviour of Poly(Vinylidene Fluoride) and Its Electro-mechanical Properties[J]. Journal of Materials Science, 2014, 49: 103–113CrossRef
  [32]Barrau S, Demont P, Peigney A, et al. DC and AC Conductivity of Carbon Nanotubes-polyepoxy Composites[J]. Macromolecule, 2003, 36(14): 5187–5194CrossRef
  [33]Huymen I, Quievy N, Bailly C, et al. Multifunctional Hybrids for Electromagnetic Absorption[J]. Acta Materialia, 2011, 59: 3255–3266CrossRef
  [34]Linares A, Canalda JC, Cagiao ME, et al. Broad-band Electrical Conductivity of High Density Oolyethylene Nanocomposites with Carbon Nanoadditives: Multiwall Carbon Nanotubes and Carbon Nanofibers[J]. Macromolecules, 2008, 41(19): 7090–7097CrossRef
  [35]Athanasopoulos N, Baltopoulos A, Matzakou M, et al. Electrical Conductivity of Polyurethane/MWCNT Nanocomposite Foams[J]. Polymer Composites, 2012, 33(8): 1302–1312CrossRef
  [36]Ameli A, Nofar M, Park CB, et al. Polypropylene/Carbon Nanotube Nano/Microcellularstructures with High Dielectric Permittivity, Lowdielectric Loss, and Low Percolationthreshold[J]. Carbon, 2014, 71: 206–217CrossRef
  [37]Xu XB, Li ZM, Shi L, et al. Ultralight Conductive Carbon-Nanotube-Polymer Composite[J]. Small, 2007, 3(3): 408–411CrossRef
  [38]Yang Y, Gupta M, Dudley K, et al. Lawrence, Conductive Carbon Nanofiber-polymer Foam Structures[J]. Advanced Materials, 2005, 17(16): 1999–2003CrossRef
  [39]Antunes M, Mudarra M, Velasco JI. Broad-band Electrical Conductivity of Carbon Nanofibre-reinforced Polypropylene Foams[J]. Carbon, 2011, 49: 708–717CrossRef
  
• 作者单位：Huan Yuan 袁欢 (1)
  Yuanlu Xiong 熊远禄 (1)
  Guoqiang Luo 罗国强 (1)
  Meijuan Li (2)
  Qiang Shen (1)
  Lianmeng Zhang (1)
  
  1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
  2. School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan, 430070, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Materials Science
  Chinese Library of Science
  
• 出版者：Wuhan University, co-published with Springer
• ISSN：1993-0437

文摘

The carbon nanotubes (CNTs)/ polymethylmethacrylate (PMMA) nanocomposite foams were prepared by the anti-solvent precipitation and supercritical foaming method. The morphology and the electrical conductivity of the foams with different kinds of CNTs were investigated. The experimental results showed that all the foams had uniform cell structure, and the cell size changed from 1.9 to 10 μm when the foaming temperature ranged from 50 °C to 95 °C. With small cell size (1.9–4.0 μm), the conductivities of the foams were 3.34×10−6–4.16×10−6 S/cm compared with the solid matrix since the introduction of micro cells did not destroy the conductive network. However, when the cell size was biger (4.5–10 μm), the aspect ratio of the CNTs played the dominant role of the conductivity. The foams with short CNTs had higher conductivity, since the short CNTs were hard to stretch and snap by the cells and can well-dispersed in the cell wall and cell edges. The results of this work provided a novel material design method for conductive foams based on the rule of both microstructure and aspect ratio of the CNTs.