Polymer-bound hydroxamic dithiobenzoic anhydride: a new heterogeneous photoinitiator

✍ Scribed by Sophiamma, P. N.; Sreekumar, K.

• Book ID: 101229255
• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 270 KB
• Volume: 45
• Category: Article
• ISSN: 0959-8103
• DOI: 10.1002/(sici)1097-0126(199802)45:2<157::aid-pi858>3.0.co;2-c

✦ Synopsis

Poly(methylmethacrylate) resins crosslinked with divinyl benzene, ethyleneglycol dimethacrylate and N,N@-methylene-bis-acrylamide were functionalized to generate a photodissociable chromophore, S-benzoyl-odithiohydroxamate. These polymeric mixed anhydrides were found to be efficient heterogeneous initiators in the light-induced polymerization of acrylic and vinyl monomers. On UV irradiation, both homopolymers and graft polymers were obtained. Polymerization of MMA was followed at various time intervals and as a function of monomer and initiator concentrations. On varying the initiator concentration, the rate of polymerization passed through a maximum.

1998 SCI.