Polymer weathering in Antarctica

J 2019

Polymer weathering in Antarctica

TOCHÁČEK, Jiří; Kamil LÁSKA; Radka BÁLKOVÁ; Lukáš KRMÍČEK; Jan MERNA et al.

Základní údaje

Originální název

Polymer weathering in Antarctica

Autoři

TOCHÁČEK, Jiří; Kamil LÁSKA; Radka BÁLKOVÁ; Lukáš KRMÍČEK; Jan MERNA; Michael TUPÝ; Pavel KAPLER; Petr POLÁČEK; Klára ČÍŽKOVÁ a Zdeněk BURÁŇ

Vydání

Polymer Testing, OXFORD, ELSEVIER SCI LTD, 2019, 0142-9418

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10509 Meteorology and atmospheric sciences

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.275

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/19:00111569

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Weathering; Photo-oxidation; Stabilization; Polypropylene; Antarctica; HALS

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 14. 5. 2020 14:30, prof. RNDr. Lukáš Krmíček, Ph.D.

Anotace

V originále

Antarctica is definitely not a typical locality for polymer testing, and yet, polymers are used there. Antarctic climate is typical with a higher portion of solar ultraviolet (UV) part in the global radiation and extremely low temperatures. Overall effect of Antarctic climatic conditions on polymer environmental degradation was investigated. Weathering experiments were carried out on 0.5 mm isotactic polypropylene homopolymer (h-PP) extruded films - non-UV-stabilized and stabilized with 1000 ppm HALS-1 (low-molecular) and 1000 ppm HALS-2 (oligomeric), respectively. The materials were exposed on James Ross Island in Antarctica for 3 years. A parallel reference series representing weathering in Central Europe (CE) was exposed in Brno, Czech Republic. Climatic data such as incident UV-A, UV-B and global radiation, outdoor air temperatures and total ozone content (TOC) were recorded during the experiment at both exposure sites. Degradation changes in polymer matrix were determined using GPC, FTIR, DSC, TGA, LTHS, SEM techniques and tensile tests. The measurements provided valuable data on h-PP photo-oxidation in Antarctica, on its possible UV stabilization and showed that despite extremes in environmental conditions h-PP degradation rate in Antarctica was still slower compared to CE. Beside UV radiation, higher ambient temperatures accelerating the secondary propagation reactions of alkylperoxy radicals are mainly responsible for the faster photo-degradation in CE.

Návaznosti

EF16_013/0001708, projekt VaV

Název: ECOPOLARIS - Změny ve struktuře a funkci součástí terestrických polárních ekosystémů (CzechPolar2)

LM2015078, projekt VaV

Název: Česká polární výzkumná infrastruktura (Akronym: CzechPolar2)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Czech Polar Research Infrastructure

LQ1601, projekt VaV

Název: CEITEC 2020 (Akronym: CEITEC2020)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CEITEC 2020

Citovat

TOCHÁČEK, Jiří; Kamil LÁSKA; Radka BÁLKOVÁ; Lukáš KRMÍČEK; Jan MERNA; Michael TUPÝ; Pavel KAPLER; Petr POLÁČEK; Klára ČÍŽKOVÁ a Zdeněk BURÁŇ. Polymer weathering in Antarctica. Polymer Testing. OXFORD: ELSEVIER SCI LTD, 2019, roč. 77, AUG 2019, s. 1-15. ISSN 0142-9418. Dostupné z: https://doi.org/10.1016/j.polymertesting.2019.105898.

@article{1587157,
   author = {Tocháček, Jiří and Láska, Kamil and Bálková, Radka and Krmíček, Lukáš and Merna, Jan and Tupý, Michael and Kapler, Pavel and Poláček, Petr and Čížková, Klára and Buráň, Zdeněk},
   article_location = {OXFORD},
   article_number = {AUG 2019},
   doi = {https://doi.org/10.1016/j.polymertesting.2019.105898},
   keywords = {Weathering; Photo-oxidation; Stabilization; Polypropylene; Antarctica; HALS},
   language = {eng},
   issn = {0142-9418},
   journal = {Polymer Testing},
   title = {Polymer weathering in Antarctica},
   url = {https://www.sciencedirect.com/science/article/pii/S0142941819303721},
   volume = {77},
   year = {2019}
}

TY  - JOUR
ID  - 1587157
AU  - Tocháček, Jiří - Láska, Kamil - Bálková, Radka - Krmíček, Lukáš - Merna, Jan - Tupý, Michael - Kapler, Pavel - Poláček, Petr - Čížková, Klára - Buráň, Zdeněk
PY  - 2019
TI  - Polymer weathering in Antarctica
JF  - Polymer Testing
VL  - 77
IS  - AUG 2019
SP  - 1-15
EP  - 1-15
PB  - ELSEVIER SCI LTD
SN  - 01429418
KW  - Weathering
KW  - Photo-oxidation
KW  - Stabilization
KW  - Polypropylene
KW  - Antarctica
KW  - HALS
UR  - https://www.sciencedirect.com/science/article/pii/S0142941819303721
L2  - https://www.sciencedirect.com/science/article/pii/S0142941819303721
N2  - Antarctica is definitely not a typical locality for polymer testing, and yet, polymers are used there. Antarctic climate is typical with a higher portion of solar ultraviolet (UV) part in the global radiation and extremely low temperatures. Overall effect of Antarctic climatic conditions on polymer environmental degradation was investigated. Weathering experiments were carried out on 0.5 mm isotactic polypropylene homopolymer (h-PP) extruded films - non-UV-stabilized and stabilized with 1000 ppm HALS-1 (low-molecular) and 1000 ppm HALS-2 (oligomeric), respectively. The materials were exposed on James Ross Island in Antarctica for 3 years. A parallel reference series representing weathering in Central Europe (CE) was exposed in Brno, Czech Republic. Climatic data such as incident UV-A, UV-B and global radiation, outdoor air temperatures and total ozone content (TOC) were recorded during the experiment at both exposure sites. Degradation changes in polymer matrix were determined using GPC, FTIR, DSC, TGA, LTHS, SEM techniques and tensile tests. The measurements provided valuable data on h-PP photo-oxidation in Antarctica, on its possible UV stabilization and showed that despite extremes in environmental conditions h-PP degradation rate in Antarctica was still slower compared to CE. Beside UV radiation, higher ambient temperatures accelerating the secondary propagation reactions of alkylperoxy radicals are mainly responsible for the faster photo-degradation in CE.
ER  -

TOCHÁČEK, Jiří; Kamil LÁSKA; Radka BÁLKOVÁ; Lukáš KRMÍČEK; Jan MERNA; Michael TUPÝ; Pavel KAPLER; Petr POLÁČEK; Klára ČÍŽKOVÁ a Zdeněk BURÁŇ. Polymer weathering in Antarctica. \textit{Polymer Testing}. OXFORD: ELSEVIER SCI LTD, 2019, roč.~77, AUG 2019, s.~1-15. ISSN~0142-9418. Dostupné z: https://doi.org/10.1016/j.polymertesting.2019.105898.

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