Photoinduced radical polymerization of styrene derivatives via their cation radicals
โ Scribed by Tetsuya Gotoh; Masahide Yamamoto; Yasunori Nishijima
- Book ID
- 104692625
- Publisher
- Springer
- Year
- 1980
- Tongue
- English
- Weight
- 261 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0170-0839
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โฆ Synopsis
It was found that radical polymerization occurs when the mixture of ~-methoxystyrene and styrene in the presence of electron acceptors is photoexcited in basic solvents.
Concomitantly, p_-methoxystyrenestyrene co-dimers: trans-l-(4'-methoxyphenyl)-2-phenylcyclobutane and l-(4-~-methoxyphenyl)-l,2,3,4-tetrahydronaphthalene are produced.
From the results of some polymerization runs and the co-dimer structure, it is considered that the linear co-dimer cation radical is the common precursor for both radical polymerization and cationic dimerization, and the radical polymerization is initiated by its radical end.
๐ SIMILAR VOLUMES
A styrene derivative (1) bearing kojic acid moieties was prepared by t h e base-catalyzed reaction of p-formylstyrene with kojic acid. Hydroxyl groups in 1 were subjected to acetylation. Although 1 did not undergo radical polymerization, the acetylated styrene derivative (2) showed good radical homo
Well-deยฎned polystyrenes with an a-C(CH 3 ) 2 (CN) and an v-chlorine atom end-groups, and narrow polydispersity (M n = 3000ยฑ4000 g mol ร1 , M w /M n = 1.3ยฑ1.4) have been synthesized by a radical polymerization process using 2,2'-azobisisobutyronitrile(AIBN)/FeCl 3 /PPh 3 initiation system. When the