Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways
Authors
Pavlović, Miroslav M.Pavlović, Miomir
Ćosović, Vladan
Bojanić, Vaso
Nikolić, Nebojša D.
Aleksić, Radoslav
Article (Published version)
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Composites based on polymers with conductive fillers have been gaining more significant roles in a variety of technological domains and they are getting in the research focus of numerous studies as a part of growing research trend. Galvanostatically produced copper powder with high values of specific area was used as filler for synthesis of electroconductive composite materials prepared by the compression molding of mixtures of lignocellulose and electrochemically deposited copper powder. This article is concerned with characterization of these composites. Analysis of the most significant properties of prepared composites and its components included measurements of electrical conductivity, impedance spectroscopy (IS) behavior and structural and morphological analysis. Volume fraction of the copper powder was varied from 2.0-29.8% (v/v). The significant increase of the electrical conductivity can be observed as the copper powder content reaches the percolation threshold (PT). It was sho...wn that PT depends on both particle shape and type of spatial distribution. IS measurements have shown that particle morphology having pronounced grain boundaries has great effect on appearance of electric conductive layers. The packaging effect and more pronounced interpartical contact with copper powder particles lead to "movement" of PT, which for the particles LT 45 mu m and highest processing pressure of 27 MPa was 7.2% (v/v). IS response of the composites showed existence of electrical conductive layers, each having different resistivity which increases towards interior of the composite.
Keywords:
impedance spectroscopy / electrolytic copper powder / lignocellulose / compositeSource:
International Journal of Electrochemical Science, 2014, 9, 12, 8355-8366Publisher:
- Electrochemical Science Group
Funding / projects:
- Advanced multicomponent metal systems and nanostructured materials with diverse functional properties (RS-MESTD-Basic Research (BR or ON)-172037)
- Electrochemical synthesis and characterization of nanostructured functional materials for application in new technologies (RS-MESTD-Basic Research (BR or ON)-172046)
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Pavlović, Miroslav M. AU - Pavlović, Miomir AU - Ćosović, Vladan AU - Bojanić, Vaso AU - Nikolić, Nebojša D. AU - Aleksić, Radoslav PY - 2014 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5778 AB - Composites based on polymers with conductive fillers have been gaining more significant roles in a variety of technological domains and they are getting in the research focus of numerous studies as a part of growing research trend. Galvanostatically produced copper powder with high values of specific area was used as filler for synthesis of electroconductive composite materials prepared by the compression molding of mixtures of lignocellulose and electrochemically deposited copper powder. This article is concerned with characterization of these composites. Analysis of the most significant properties of prepared composites and its components included measurements of electrical conductivity, impedance spectroscopy (IS) behavior and structural and morphological analysis. Volume fraction of the copper powder was varied from 2.0-29.8% (v/v). The significant increase of the electrical conductivity can be observed as the copper powder content reaches the percolation threshold (PT). It was shown that PT depends on both particle shape and type of spatial distribution. IS measurements have shown that particle morphology having pronounced grain boundaries has great effect on appearance of electric conductive layers. The packaging effect and more pronounced interpartical contact with copper powder particles lead to "movement" of PT, which for the particles LT 45 mu m and highest processing pressure of 27 MPa was 7.2% (v/v). IS response of the composites showed existence of electrical conductive layers, each having different resistivity which increases towards interior of the composite. PB - Electrochemical Science Group T2 - International Journal of Electrochemical Science T1 - Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways EP - 8366 IS - 12 SP - 8355 VL - 9 UR - https://hdl.handle.net/21.15107/rcub_cer_1415 ER -
@article{ author = "Pavlović, Miroslav M. and Pavlović, Miomir and Ćosović, Vladan and Bojanić, Vaso and Nikolić, Nebojša D. and Aleksić, Radoslav", year = "2014", abstract = "Composites based on polymers with conductive fillers have been gaining more significant roles in a variety of technological domains and they are getting in the research focus of numerous studies as a part of growing research trend. Galvanostatically produced copper powder with high values of specific area was used as filler for synthesis of electroconductive composite materials prepared by the compression molding of mixtures of lignocellulose and electrochemically deposited copper powder. This article is concerned with characterization of these composites. Analysis of the most significant properties of prepared composites and its components included measurements of electrical conductivity, impedance spectroscopy (IS) behavior and structural and morphological analysis. Volume fraction of the copper powder was varied from 2.0-29.8% (v/v). The significant increase of the electrical conductivity can be observed as the copper powder content reaches the percolation threshold (PT). It was shown that PT depends on both particle shape and type of spatial distribution. IS measurements have shown that particle morphology having pronounced grain boundaries has great effect on appearance of electric conductive layers. The packaging effect and more pronounced interpartical contact with copper powder particles lead to "movement" of PT, which for the particles LT 45 mu m and highest processing pressure of 27 MPa was 7.2% (v/v). IS response of the composites showed existence of electrical conductive layers, each having different resistivity which increases towards interior of the composite.", publisher = "Electrochemical Science Group", journal = "International Journal of Electrochemical Science", title = "Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways", pages = "8366-8355", number = "12", volume = "9", url = "https://hdl.handle.net/21.15107/rcub_cer_1415" }
Pavlović, M. M., Pavlović, M., Ćosović, V., Bojanić, V., Nikolić, N. D.,& Aleksić, R.. (2014). Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways. in International Journal of Electrochemical Science Electrochemical Science Group., 9(12), 8355-8366. https://hdl.handle.net/21.15107/rcub_cer_1415
Pavlović MM, Pavlović M, Ćosović V, Bojanić V, Nikolić ND, Aleksić R. Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways. in International Journal of Electrochemical Science. 2014;9(12):8355-8366. https://hdl.handle.net/21.15107/rcub_cer_1415 .
Pavlović, Miroslav M., Pavlović, Miomir, Ćosović, Vladan, Bojanić, Vaso, Nikolić, Nebojša D., Aleksić, Radoslav, "Influence of Electrolytic Copper Powder Particle Morphology on Electrical Conductivity of Lignocellulose Composites and Formation of Conductive Pathways" in International Journal of Electrochemical Science, 9, no. 12 (2014):8355-8366, https://hdl.handle.net/21.15107/rcub_cer_1415 .