UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2024-11-22 2:32
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Conference: Bucharest University Faculty of Physics 2013 Meeting


Section: Solid State Physics and Materials Science


Title:
Polymeric nanocomposites materials for applications in tactile sensors


Authors:
Leila Zevri (1), Iulian Iordache (2) and Zorica Bacinschi (1)


Affiliation:
1. Valahia University from Târgovişte, Bd. Carol I, Nr. 2, 130024, Târgovişte, Dâmboviţa, Romania

2. National Institute for Research in Electrical Engineering (INCDIE ICPE-CA), Splaiul Unirii, No. 313, Sector 3, 030138, Bucharest, Romania


E-mail
leila_zevri@yahoo.com


Keywords:
polymeric nanocomposites, electrical resistivity of polymeric nanocomposites, thermal behavior.


Abstract:
In the present research we have developed some new materials with applications in the field of tactile sensors. The materials were made by adding nanometer-sized conductive particles from carbon blacks like CHEZACARB B and KETJENBLACK EC 300 J in various mass concentrations in a silicone polymer matrix. There were studied electrical properties by means of static and dynamic methods. The results obtained show an electrical resistivity for samples with CHEZACARB B, SE-CHB -5(volume electrical resistivity, ρ≈107 Ω•cm), SE-CHB-6 (volume electrical resistivity, ρ ≈106 Ω•cm), and with KETJENBLACK EC 300 J ,SE-KTJ-4 volume electrical resistivity, ρ≈ 106 Ω•cm, SE- KTJ -5 volume electrical resistivity,ρ≈ 106 Ω•cm and SE-KTJ-6, volume electrical resistivity, ρ≈ 104 Ω•cm ) with two orders of magnitude differences. These differences in resistivity account for the tensile sensitivity of the nanocomposites materials and are explained by close examination of the structure by scanning electron microscopy and X-ray diffractrometry. To conduct the research was necessary some specific characterizations involving the determination of thermal behavior by differential thermal analysis (TG, DTG, DSC). In thermo grams (TG, DTA and DSC) obtained for the polymer matrix composite materials (polydimethylsiloxane) and single carbon-based filler Thermo gravimetric analysis of polymer nanocomposites samples indicate their good behavior at ordinary temperatures.