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Processability and characterization of poly(vinyl chloride)‐ b ‐poly( n ‐butyl acrylate)‐ b ‐poly(vinyl chloride) prepared by living radical polymerization of vinyl chloride. Comparison with a flexible commercial resin formulation prepared with PVC and dioctyl phthalate
Author(s) -
Coelho Jorge F.J.,
Carreira Mafalda,
Gonçalves Pedro M.O.F.,
Popov Anatoliy V.,
Gil Maria H.
Publication year - 2006
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.20088
Subject(s) - vinyl chloride , copolymer , polymer chemistry , materials science , miscibility , acrylate , vinyl polymer , polymerization , catalytic chain transfer , radical polymerization , polyvinyl chloride , butyl acrylate , anionic addition polymerization , polymer , composite material
This work reports the synthesis and processing of a new flexible material based on PVC produced by living radical polymerization. The synthesis was carried out in a two‐step process. In the first step the macroinitiator α, ω‐di(iodo)poly(butyl acrylate) [α, ω‐di(iodo)PBA] was synthesized in water by single electron transfer/degenerative chain transfer mediated living radical polymerization (SET‐DTLRP) catalyzed by Na 2 S 2 O 4 . In the second step this macroinitiator was reinitiated by SET‐DTLRP of vinyl chloride (VC), thereby leading to the formation of the block copolymer poly(vinyl chloride)‐ b ‐poly(butyl acrylate)‐ b ‐poly(vinyl chloride) [PVC‐ b ‐PBA‐ b ‐PVC]. This new material was processed on a laboratory scale. The DMTA traces showed only a single glass transition temperature, thus indicating that no phase segregation was present. The copolymers were studied with regard to their processing, miscibility, and mechanical properties. The first comparison with commercial formulations made with PVC and dioctyl phthalate (DOP) is presented. J. VINYL ADDIT. TECHNOL., 12:156–165, 2006. © 2006 Society of Plastics Engineers