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Materiale Plastice
Cite as: Mater. Plast.
https://doi.org/10.37358/Mat.Plast.1964

OSIM Nr. R102356
ISSN Print 0025-5289
ISSN Online 2668-8220
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Materiale Plastice (Mater. Plast.), Year 2019, Volume 56, Issue 2, 330-336

https://doi.org/10.37358/MP.19.2.5181

Adriana-Mariana Bors, Marius-Eduard Lungulescu, Nicoleta Oana Nicula (Butoi), Alina-Ruxandra Caramitu, Iosif Lingvay

Ageing of Some Lacquers Due to Microbiological Stress


Abstract:
This paper shows the ageing study of some coatings and / or impregnation lacquers due to microbiological stress through fungal attack. Dielectric spectroscopy has shown that the dielectric losses of the investigated materials increase as result of microbiological ageing. The mean recorded increases are about 4 times for the alkyl-epoxy-melamine copolymer, 2 times for epoxy polymer and 1.5 times for urethane polymer in agreement with the mould coverage degree of about 20 %, 10 %, and 3 %, respectively. The fungal attack of the investigated polymers led to a decrease in volume resistivity of about 65 % for the alkyl-epoxy-melamine copolymer, 45 % for the epoxy polymer, and 14 % for polyurethane, in agreement with the increase of dielectric losses and degree of mold coverage of the samples. FTIR determinations have shown that fungal attack significantly increased the number of aliphatic -OH and C-H bonds and decreased the number of C-O bonds, respectively of C-O-C oxiran groups and C-C aromatic bonds. DSC thermograms recorded at different temperature ranges and the activation energies calculation for first major oxidation process indicate that after the fungal attack the thermooxidative reactivity of the investigated polymers increases.


Keywords:
coatings; lacquers; moulds; dielectric loss; resistivity; microbiological stress

Issue: 2019 Volume 56, Issue 2
Pages: 330-336
Publication date: 2019/6/30
https://doi.org/10.37358/MP.19.2.5181
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Creative Commons License
This article is published under the Creative Commons Attribution 4.0 International License
Citation Styles
Cite this article as:
BORS, A., LUNGULESCU, M., NICULA (BUTOI), N.O., CARAMITU, A., LINGVAY, I., Ageing of Some Lacquers Due to Microbiological Stress, Mater. Plast., 56(2), 2019, 330-336.

Vancouver
Bors A, Lungulescu M, Nicula (Butoi) NO, Caramitu A, Lingvay I. Ageing of Some Lacquers Due to Microbiological Stress. Mater. Plast.[internet]. 2019 Apr;56(2):330-336. Available from: https://doi.org/10.37358/MP.19.2.5181


APA 6th edition
Bors, A., Lungulescu, M., Nicula (Butoi), N.O., Caramitu, A. & Lingvay, I. (2019). Ageing of Some Lacquers Due to Microbiological Stress. Materiale Plastice, 56(2), 330-336. https://doi.org/10.37358/MP.19.2.5181


Harvard
Bors, A., Lungulescu, M., Nicula (Butoi), N.O., Caramitu, A., Lingvay, I. (2019). 'Ageing of Some Lacquers Due to Microbiological Stress', Materiale Plastice, 56(2), pp. 330-336. https://doi.org/10.37358/MP.19.2.5181


IEEE
A. Bors, M. Lungulescu, N.O. Nicula(Butoi), A. Caramitu, I. Lingvay, "Ageing of Some Lacquers Due to Microbiological Stress". Materiale Plastice, vol. 56, no. 2, pp. 330-336, 2019. [online]. https://doi.org/10.37358/MP.19.2.5181


Text
Adriana-Mariana Bors, Marius-Eduard Lungulescu, Nicoleta Oana Nicula (Butoi), Alina-Ruxandra Caramitu, Iosif Lingvay,
Ageing of Some Lacquers Due to Microbiological Stress,
Materiale Plastice,
Volume 56, Issue 2,
2019,
Pages 330-336,
ISSN 2668-8220,
https://doi.org/10.37358/MP.19.2.5181.
(https://revmaterialeplastice.ro/Articlegs.asp?ID=5181)
Keywords: coatings; lacquers; moulds; dielectric loss; resistivity; microbiological stress


RIS
TY - JOUR
T1 - Ageing of Some Lacquers Due to Microbiological Stress
A1 - Bors, Adriana-Mariana
A2 - Lungulescu, Marius-Eduard
A3 - Nicula (Butoi), Nicoleta Oana
A4 - Caramitu, Alina-Ruxandra
A5 - Lingvay, Iosif
JF - Materiale Plastice
JO - Mater. Plast.
PB - Materiale Plastice SRL
SN - 2668-8220
Y1 - 2019
VL - 56
IS - 2
SP - 330
EP - 336
UR - https://doi.org/10.37358/MP.19.2.5181
KW - coatings
KW - lacquers
KW - moulds
KW - dielectric loss
KW - resistivity
KW - microbiological stress
ER -


BibTex
@article{MatPlast2019P330,
author = {Bors Adriana-Mariana and Lungulescu Marius-Eduard and Nicula (Butoi) Nicoleta Oana and Caramitu Alina-Ruxandra and Lingvay Iosif},
title = {Ageing of Some Lacquers Due to Microbiological Stress},
journal = {Materiale Plastice},
volume = {56},
number = {2},
pages = {330-336},
year = {2019},
issn = {2668-8220},
doi = {https://doi.org/10.37358/MP.19.2.5181},
url = {https://revmaterialeplastice.ro/Articlegs.asp?ID=5181}
}
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