Photo-Thermal Electrical Resistance Response of Polyisoprene/Nanographite Composites

Polymer 2016
Māris Knite, Kaspars Ozols, Armin Fuith, Ilze Aulika, Raimonds Orlovs

Laser induced photo-thermal resistance response (PTRR) of polyisoprene/nanographite (PN) composites was studied. An inverse character of photoresistance in comparison to semiconductor-like materials was observed: electrical resistance of the PN composite increases when the intensity of the laser radiation is increased. The observed response can be explained by the photo-thermal effect: if the temperature of the PN composite rises because of optical radiation absorption then the electrical resistance increases due to positive temperature coefficient of the composite. Theoretical explanation of the positive temperature coefficient effect in PN composites based on tunneling-percolation model is given. © 2016 Elsevier Ltd. All rights reserved.

Keywords
Photo-thermal, electrical resistance response, polymer nanocomposite, nanographite, carbon black
DOI
10.1016/j.polymer.2016.01.031
Hyperlink
http://www.sciencedirect.com/science/article/pii/S0032386116300313

Knite, M., Ozols, K., Fuith, A., Aulika, I., Orlovs, R. Photo-Thermal Electrical Resistance Response of Polyisoprene/Nanographite Composites. Polymer, 2016, Vol.85, pp.55-60. ISSN 0032-3861. Available from: doi:10.1016/j.polymer.2016.01.031

Publication language
English (en)