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Abnormalities in electrical and acoustic properties of thermoplastic polyurethane
Author(s) -
Volkova A. V.,
Domkin A. N.,
Strachov V. V.
Publication year - 1993
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990300102
Subject(s) - thermoplastic polyurethane , materials science , composite material , thermoplastic , polyurethane , volume (thermodynamics) , polymer , electron , thermodynamics , physics , quantum mechanics , elastomer
The temperature dependence of ultrasonic pulse velocity C and specific volume resistance ρ v of crystallizing thermoplastic polyurethane (TPUR) was investigated. It was revealed that under certain conditions TPUR acquired abnormally low ρ v values and C values uncharacteristic of polymers. An explanation for the observed abnormalities could be based on the assumption of the presence of ‘hot’ electrons in TPUR.