Heterogeneity of accelerated photooxidation in stabilized bulk commodity polymers studied by X-band ESRI

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F18%3A00495543" target="_blank" >RIV/61389013:_____/18:00495543 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00723-018-1042-x" target="_blank" >http://dx.doi.org/10.1007/s00723-018-1042-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00723-018-1042-x" target="_blank" >10.1007/s00723-018-1042-x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Heterogeneity of accelerated photooxidation in stabilized bulk commodity polymers studied by X-band ESRI

Popis výsledku v původním jazyce

Heterogeneity of photooxidation processes in plaques made of commodity polymers, high-density polyethylene, and cyclic olefin copolymer poly(ethylene-co-norbornene) (Topas® 8007) stabilized with various hindered amine stabilizers. Some of them in combination with UV stabilizers exposed to accelerated weathering were studied using electron spin resonance imaging (ESRI) and three independent microscopic-scale methods: scanning electron microscopy, infrared microscopy, and microhardness testing. Concentration profiles of nitroxides mapping photooxidation process inside polymer plaques along the direction of incident radiation (perpendicular to the irradiated surface of the plaques) were determined by ESRI technique in dependence on the duration of the accelerated photooxidation. ESRI data were complemented with profiles of oxidation products, crystallinity, and microhardness measured inside the plaques along the same direction. Selection of stabilizers in the study was completed with α-tocopherol that is considered as the most active component of excellent processing stabilizer vitamin E.

Název v anglickém jazyce

Heterogeneity of accelerated photooxidation in stabilized bulk commodity polymers studied by X-band ESRI

Popis výsledku anglicky

Heterogeneity of photooxidation processes in plaques made of commodity polymers, high-density polyethylene, and cyclic olefin copolymer poly(ethylene-co-norbornene) (Topas® 8007) stabilized with various hindered amine stabilizers. Some of them in combination with UV stabilizers exposed to accelerated weathering were studied using electron spin resonance imaging (ESRI) and three independent microscopic-scale methods: scanning electron microscopy, infrared microscopy, and microhardness testing. Concentration profiles of nitroxides mapping photooxidation process inside polymer plaques along the direction of incident radiation (perpendicular to the irradiated surface of the plaques) were determined by ESRI technique in dependence on the duration of the accelerated photooxidation. ESRI data were complemented with profiles of oxidation products, crystallinity, and microhardness measured inside the plaques along the same direction. Selection of stabilizers in the study was completed with α-tocopherol that is considered as the most active component of excellent processing stabilizer vitamin E.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/LM2015064" target="_blank" >LM2015064: Český národní uzel Evropské infrastruktury pro translační medicínu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Magnetic Resonance

ISSN

0937-9347

e-ISSN

—

Svazek periodika

49

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

18

Strana od-do

1217-1234

Kód UT WoS článku

000448720400005

EID výsledku v databázi Scopus

2-s2.0-85050638743