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TY - JOUR
AU - Đorđević, Katarina Lj.
AU - Miličević, Dejan S.
AU - Galović, Slobodanka
AU - Suljovrujić, Edin H.
AU - Jaćimovski, Stevo K.
AU - Furundžić, Draško
AU - Popović, Marica N.
PY - 2022
UR - https://vinar.vin.bg.ac.rs/handle/123456789/10196
AB - The paper presents a generalized model of the photothermal response of a polymer sample. The model is based on a linear non-Fourier heat conduction equation that considers thermal memory and complex heat capacity. The physical meaning of imaginary heat capacity is discussed from the point of view of non-equilibrium thermodynamics. The derived heat conduction equation introduces two additional dynamic properties of a medium to time-varying heat conduction: inertial and kinetic relaxation time. The influence of these relaxation times on photothermal response is analyzed. It is shown that the derived model could explain the measured photoacoustic response of different semi-crystalline polyethylenes (PEs). The obtained results show that photothermal techniques can be employed to estimate relaxation phenomena in polymeric materials when the frequency scale of the experiment is greater than the inverse value of any relaxation time. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
T2 - International Journal of Thermophysics
T1 - Photothermal Response of Polymeric Materials Including Complex Heat Capacity
VL - 43
IS - 5
SP - 68
DO - 10.1007/s10765-022-02985-3
ER -
@article{
author = "Đorđević, Katarina Lj. and Miličević, Dejan S. and Galović, Slobodanka and Suljovrujić, Edin H. and Jaćimovski, Stevo K. and Furundžić, Draško and Popović, Marica N.",
year = "2022",
abstract = "The paper presents a generalized model of the photothermal response of a polymer sample. The model is based on a linear non-Fourier heat conduction equation that considers thermal memory and complex heat capacity. The physical meaning of imaginary heat capacity is discussed from the point of view of non-equilibrium thermodynamics. The derived heat conduction equation introduces two additional dynamic properties of a medium to time-varying heat conduction: inertial and kinetic relaxation time. The influence of these relaxation times on photothermal response is analyzed. It is shown that the derived model could explain the measured photoacoustic response of different semi-crystalline polyethylenes (PEs). The obtained results show that photothermal techniques can be employed to estimate relaxation phenomena in polymeric materials when the frequency scale of the experiment is greater than the inverse value of any relaxation time. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.",
journal = "International Journal of Thermophysics",
title = "Photothermal Response of Polymeric Materials Including Complex Heat Capacity",
volume = "43",
number = "5",
pages = "68",
doi = "10.1007/s10765-022-02985-3"
}
Đorđević, K. Lj., Miličević, D. S., Galović, S., Suljovrujić, E. H., Jaćimovski, S. K., Furundžić, D.,& Popović, M. N.. (2022). Photothermal Response of Polymeric Materials Including Complex Heat Capacity. in International Journal of Thermophysics, 43(5), 68.
https://doi.org/10.1007/s10765-022-02985-3
Đorđević KL, Miličević DS, Galović S, Suljovrujić EH, Jaćimovski SK, Furundžić D, Popović MN. Photothermal Response of Polymeric Materials Including Complex Heat Capacity. in International Journal of Thermophysics. 2022;43(5):68.
doi:10.1007/s10765-022-02985-3 .
Đorđević, Katarina Lj., Miličević, Dejan S., Galović, Slobodanka, Suljovrujić, Edin H., Jaćimovski, Stevo K., Furundžić, Draško, Popović, Marica N., "Photothermal Response of Polymeric Materials Including Complex Heat Capacity" in International Journal of Thermophysics, 43, no. 5 (2022):68,
https://doi.org/10.1007/s10765-022-02985-3 . .
,