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Radical Ring Opening and Vinyl Copolymerization of 2,3,4,5,6-pentafluorostyrene with 5,6-Benzo-2-methylene-1,3-dioxepane: Synthesis and Structural Characterization Using 1D and 2D NMR Techniques

Title data

Agarwal, Seema:
Radical Ring Opening and Vinyl Copolymerization of 2,3,4,5,6-pentafluorostyrene with 5,6-Benzo-2-methylene-1,3-dioxepane: Synthesis and Structural Characterization Using 1D and 2D NMR Techniques.
In: Journal of Polymer Research. Vol. 13 (2006) Issue 5 . - pp. 403-412.
ISSN 1572-8935
DOI: https://doi.org/10.1007/s10965-006-9058-6

Official URL: Volltext

Abstract in another language

Radical ring opening polymerisation behaviour of 5,6-Benzo-2-methylene-1,3-dioxepane (BMDO) during its copolymerisation with 2,3,4,5,6-pentafluorostyrene (PFS) is reported using t-butyl peroxide (TBPO) conventional radical initiator. The reactivity behaviour of PFS for its copolymerisation is compared with that of the corresponding non-fluorinated monomer styrene. The presence of five fluorine atoms affected the course of polymerisation and led to the synthesis of well defined copolymers as compared to the formation of only homo poly styrene. Structural characterisation of the copolymers was done using 1D and 2D NMR spectroscopic techniques. The microstructural characterisation showed the formation of gradient copolymers with increased reaction time and/or increased amount of BMDO in the feed. The reactivity ratios for the copolymerisation of BMDO and PFS were determined using Kelen-Tudos method and was found to be r(BMDO) = 0.35 and r(PFS) = 9.9. Thermal stabilities of copolymers are also compared with that of the homopolymers.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: radical ring opening polymerisation; degradation; pentafluorostyrene; copolymers; microstructure
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Profile Fields > Advanced Fields > Polymer and Colloid Science
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Profile Fields
Profile Fields > Advanced Fields
Result of work at the UBT: No
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 07 Apr 2015 12:20
Last Modified: 07 Apr 2015 12:20
URI: https://eref.uni-bayreuth.de/id/eprint/9900