Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Free-Radical Copolymerization Behavior of 5,6-Benzo-2-methylene-1,3-dioxepane and Methacrylic Acid via the in Situ Generation of 3-Methyl-1,5-dihydrobenzo[e] 1,3]dioxepin-3-yl Methacrylate and 2-(Acetoxymethyl)benzyl Methacrylate

Title data

Ren, Liqun ; Speyerer, Christian ; Agarwal, Seema:
Free-Radical Copolymerization Behavior of 5,6-Benzo-2-methylene-1,3-dioxepane and Methacrylic Acid via the in Situ Generation of 3-Methyl-1,5-dihydrobenzo[e] 1,3]dioxepin-3-yl Methacrylate and 2-(Acetoxymethyl)benzyl Methacrylate.
In: Macromolecules. Vol. 40 (30 October 2007) Issue 22 . - pp. 7834-7841.
ISSN 0024-9297
DOI: https://doi.org/10.1021/ma0711588

Official URL: Volltext

Abstract in another language

The copolymerization of 5,6-benzo-2-methylene-1,3-dioxepane (BMDO) with methacrylic acid (MAA) using free radical initiator like di-tert-butylperoxide resulted in different copolymer structures depending on the monomer feed ratio. The copolymerization proceeded in an unconventional way, i.e., by in situ formation of a new vinyl monomer on mixing BMDO and MAA. In this work, we found a new route to copolymerization by first adding MAA to the double bond of BMDO generating a new vinyl monomer (3-methyl-1,5-dihydrobenzoe1,3dioxepin-3-yl methacrylate) with a double bond and retaining the seven membered ring of BMDO intact. The new structure is stable at 25 °C but underwent ring-opening at higher temperatures like 120 °C, generating further a different vinyl monomer with ester linkages in the side chain (2-(acetoxymethyl)benzyl methacrylate). The resulting new monomer can copolymerize with both MAA and BMDO depending on the monomer feed ratio. The structure of the new monomers and copolymers were characterized using 1D and 2D NMR techniques.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: RING-OPENING POLYMERIZATION; CYCLIC KETENE ACETALS; 2D NMR; 2-METHYLENE-1,3-DIOXEPANE; 2-METHYLENE-4-PHENYL-1,3-DIOXOLANE; ACRYLATE; STYRENE;
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 11:28
Last Modified: 07 Apr 2015 11:28
URI: https://eref.uni-bayreuth.de/id/eprint/9896