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dc.creatorPavlović, Miroslav
dc.creatorPantović Pavlović, Marijana
dc.creatorZarić, Milana
dc.creatorPanić, Vladimir
dc.creatorStevanović, Jasmina
dc.creatorPavlović, Miomir
dc.date.accessioned2023-09-26T07:55:50Z
dc.date.available2023-09-26T07:55:50Z
dc.date.issued2016
dc.identifier.isbn978-9989-760-13-6
dc.identifier.urihttps://cer.ihtm.bg.ac.rs/handle/123456789/6633
dc.description.abstractThe results of experimental studies of the properties of composite materials based on lignocellulosic (LC) and poly(methylmetacrylate) matrices filled with electrolytic copper powder are presented. Volume fractions of metal fillers in composite materials and tested samples were varied in the range of 0.5-29.8 % (v / v). Characterization included examination of the influence of particle size and morphology on the conductivity and percolation threshold of the composites using SEM and AFM. Presence of three dimensional conductive pathways was confirmed. EDS measurements (Figure 1) show the existence of copper conductive pathways throughout the composites volumes. Due to the packaging effect and more pronounced interparticle contact with smaller, highly porous, highly dendritic particles with high values of specific area lead to "movement" of percolation threshold towards lower filler content. This feature can be observed on both on Figure 1 and Figure 2. Figure 2 presents AFM image of the PMMA and LC composite surfaces after breaking. These pathways are formed in 3D in a pure random order. The results showed that the shape and morphology of the copper powder, and filler at all, play a significant role in the phenomenon of electrical conductivity of the prepared samples and the appearance percolation threshold. The particles with highly developed free surface and dendritic and highly branched structure, such as galvanostatically obtained copper powder particles can easier form interparticle contacts at lower filler volume fractions than particles with more regular surface. When two different matrices are compared, slight advantage can be given to PMMA since the percolation threshold is at lower value. However, lignocellulose is biodegradable, green matrix, and it comes from abundant, sustainable resource, and it can be used for green composite production.sr
dc.language.isoensr
dc.publisherSkopje : Society of chemists and technologists of Macedoniasr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172037/RS//sr
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172046/RS//sr
dc.rightsopenAccesssr
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceBook of abstracts - 24th Congress of Chemists and Technologists of Macedonia, September 11-14, Ohrid, Republic of Macedoniasr
dc.subjectlignocellulosic (LC) matrixsr
dc.subjectpoly(methylmetacrylate) matrixsr
dc.titleConductive pathways in electroconductive biodegradable polymer matrix compositessr
dc.typeconferenceObjectsr
dc.rights.licenseBYsr
dc.citation.spage240
dc.citation.epage240
dc.identifier.rcubhttps://hdl.handle.net/21.15107/rcub_cer_6633
dc.identifier.fulltexthttp://cer.ihtm.bg.ac.rs/bitstream/id/27048/M34-3.pdf
dc.type.versionpublishedVersionsr


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