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Novel photoinitiated cationic copolymerizations of 4-methylene-2-phenyl-1,3-dioxolane

✍ Scribed by Kevin D. Belfield; Feras B. Abdelrazzaq

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 170 KB
Volume: 35
Category: Article
ISSN: 0887-624X
DOI: 10.1002/(sici)1099-0518(199708)35:11<2207::aid-pola11>3.0.co;2-i

No coin nor oath required. For personal study only.

✦ Synopsis

Photoinitiated polymerization of 4-methylene-2-phenyl-1,3-dioxolane ( 1) was carried out using either tris(4-methylphenyl)sulfonium hexafluoroantimonate or 4-decyloxyphenyl phenyliodonium hexafluoroantimonate as initiators. 1 H-NMR analyses confirmed exclusive ring-opening while DSC and SEC were used to determine the glass transition temperatures ( T g s) and molecular weights, respectively. Photoinitiated cationic copolymerizations of 1 were investigated with several acyclic and cyclic monomers. Copolymerization of 1 with vinyl ethers and a spiroorthoester resulted in copolymers whose thermal properties were dependent on comonomer ratios. Copolymers of 1 and dihydrofuran or dihydropyran afforded soluble polymers with T g s significantly higher than the homopolymer of 1.

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