Synthesis of novel macromonomeric peroxy initiators of styrene with the cationic copolymerization and the quantum chemically investigation of the initiation system effects     
Yazarlar (5)
Dilek Kul
Karadeniz Technical University, Türkiye
Sevil Savaşkan Yılmaz
Karadeniz Technical University, Türkiye
Temel Öztürk
Karadeniz Technical University, Türkiye
Asu Usta
Karadeniz Technical University, Türkiye
Doç. Dr. Murat MISIR Karadeniz Technical University, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Journal of Applied Polymer Science
Dergi ISSN 0021-8995 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q2
Makale Dili İngilizce
Basım Tarihi 07-2006
Cilt No 102
Sayı 1
Sayfalar 348 / 357
DOI Numarası 10.1002/app.23880
Makale Linki https://doi.org/10.1002/app.23880
Özet
Cationic polymerization of styrene (S) was performed with peroxy initiators synthesized from bis(4,4′bromomethyl benzoyl peroxide) (BBP) or bromomethyl benzoyl t-butyl peroxy ester (t-BuBP) and AgSbF6 or ZnCl2 system at 0 and -10°C to obtain macromonomeric peroxy initiators (poly-S initiators). Kinetic studies were accomplished for poly-S initiators. Poly(sryrene-block-methyl methacrylate) block copolymers [poly(S-b-MMA)] were synthesized by bulk polymerization of methyl methacrylate (MMA) with poly-S initiators. The quantum chemical calculations for the initiating systems of the cationic polymerization of S and poly(S-b-MMA) block copolymers were achieved using Hyperchem 7.5 program. The optimized geometries of the polymers were investigated with the quantum chemical calculations. Poly(S-b-MMA) block copolymers containing undecomposed peroxide groups were used to initiate thermal copolymerization of acrylic acid (AA) to obtain crosslinked poly(S-b-MMA-b-AA) multicomponent copolymers. The crosslinked multicomponent copolymers were investigated by sol-gel analysis. Swelling ratio values of the crosslinked multicomponent copolymers in CHC13 were calculated. Poly-S initiators having undecomposed peroxygen groups were used for graft copolymerization of polybutadien (PBd) to obtain crosslinked poly(S-graft-polybutadien) graft copolymers [poly(S-g-PBd)]. The characterizations of the polymers were achieved by FTIR, 1H-NMR, GPC, SEM, and DSC techniques. © 2006 Wiley Periodicals, Inc.
Anahtar Kelimeler
Block and graft copolymers | Cationic polymerization | Macroperoxy initiators | Multicomponent copolymers | Quantum chemical calculations (MM2)