(Diacetoxyiodo)benzene and [bis(trifluoro-acetoxy)iodo]benzene as photoinitiators for radical and cationic polymerization

✍ Scribed by G. Georgiev; E. Kamenska; L. Christov; I. Sideridou-Karayannidou; G. Karayannidis; A. Varvoglis

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 423 KB
• Volume: 28
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(92)90177-4

✦ Synopsis

The photodecomposition products of (diacetoxyiodo)benzene (DAI) and [bis(trifluoroacetoxy)iodo]benzene (BTI) were found to be efficient initiators for the homopolymerizations of 2-(dimethylaminoethyl)methacrylate (DMAEM) and methyl methacrylate (MMA) and also the copolymerizations of DMAEM with MMA or styrene (St). A free radical mechanism was confirmed. Copolymerization constants for DMAEM-MMA and DMAEM St were determined (rDMAE M =0.35 +0.08, rMMA~---0.57 + 0.08; rDMAE M = 0.14 + 0.01, rst = 0.20 + 0.01) and are discussed. DAI and BTI are also cationic photoinitiators for i-butyl vinyl ether (BVE). The etficiencies of DAI and BTI as photoinitiators for radical or cationic polymerization depend on the properties of the solvents and monomers.