Photochemical Reaction of Polymers Having Arylketone and Tertiary Amine as Pendant Groups

Autor:	Masahide Yamamoto, Kyoji Tsubakiyama, Kazuhide Yoshimura, Masahiko Kuzuba, Yasunori Nishijima
Rok vydání:	1991
Předmět:	chemistry.chemical_classification Polymers and Plastics Tertiary amine Radical polymerization Aromatic amine Photochemistry Methacrylate Styrene chemistry.chemical_compound Ketyl chemistry Polymer chemistry Materials Chemistry Copolymer Methyl methacrylate
Zdroj:	Polymer Journal. 23:781-788
ISSN:	1349-0540 0032-3896
DOI:	10.1295/polymj.23.781
Popis:	Binary (M1/M2) and ternary (M1/M2/M3) copolymer having aryl ketone and tertiary amine as pendant groups were prepared by radical polymerization, where M1 is 4-vinylbenzophenone (VBP) or 4-(2-naphthoyl)styrene (NSt), M2 is 2-N,N-dimethylaminoethyl methacrylate (DMAEMA) or 4-N,N-dimethylaminostyrene (DMASt), and M3 is methyl methacrylate. The polymer film was irradiated with a high-pressure mercury lamp (λ>300 nm), and photocrosslinking was followed by measuring the gel fraction. Crosslinking of the VBP(n,π*)-polymer was greatly accelerated by the amines, whereas that of the NSt(π,π*)-polymer could be induced only in their presence. The effects of the aliphatic amine (DMAEMA) were larger than those of the aromatic amine (DMASt). Absorption and emission spectra showed that the arylketones interact more strongly with aromatic amine than aliphatic amine. Laser photolysis experiments confirmed that the ketyl radicals were formed in the copolymers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::454448875f1f91fb374b91102d4e94d5 https://doi.org/10.1295/polymj.23.781 Zobrazit plný text záznamu