Investigation of Decomposition of Photoinitiators

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F08%3A00007823" target="_blank" >RIV/00216275:25310/08:00007823 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Investigation of Decomposition of Photoinitiators

Original language description

In this paper were investigated properties of four photoinitiators. Two of them are commercially available initiators (Irgacure 2959 and Irgacure 261) and the other two are new photoinitiators that were prepared (CB and HP1). CB is cationic organometallic photoinitiators and HP1 is hybrid photoinitiator with higher molecular weight containing chemical groups suitable for starting free radical and cationic polymerization simultaneously. The absorption properties and comparison of the rate of photodecomposition of tested photoinitiators were measured based on UV-VIS spectrometry. The photochemical mechanism and the estimated number of decomposition products after UV photolysis of initiators were proposed based on the results of mass spectrometry and factor analysis of UV-VIS spectra. The results from mass spectrometry and factor analysis have shown very good correlation. CB and HP1 decompose upon UV light exposure and can be used as photoinitiators for cationic (CB and HP1) or free radic

Czech name

Studium fotorozpadu iniciátorů

Czech description

Byly sledovány vlastnosti 4 fotoiniciátorů, dva z nich byly komerčně dostupné (radikálový Irgacure 2959 a kationtový Irgacure 261) a dzbylé dva byly hově připraveny (CB and HP1). CB je katintový iniciátor typu orhanokovové soli, HP1 je hybridní iniciátors vyšší molekulovou hmotností obsahující strukturní jednotky pro iniciaci současné radikálové i kationtové polymerace. Absorpční vlastnosti a stupeň fiotorozkladu byly sledovány pomocí UV-VIS spektrometrie. Mechanismus rozpadu a počet produktů rozkladubyl sledován hmotnostní spektroskopií a faktorovoui analýzou UV-VIS spekter.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JJ - Other materials

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2008

Confidentiality

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

Name of the periodical

Chemicke listy

ISSN

1803-2389

e-ISSN

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Volume of the periodical

102

Issue of the periodical within the volume

Neuveden

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

4

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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