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Microstructural Characterisation and Properties Evaluation of Poly (methyl methacrylate-co-ester)s

Title data

Agarwal, Seema:
Microstructural Characterisation and Properties Evaluation of Poly (methyl methacrylate-co-ester)s.
In: Polymer Journal. Vol. 39 (21 December 2007) Issue 2 . - pp. 163-174.
ISSN 1349-0540
DOI: https://doi.org/10.1295/polymj.PJ2006137

Official URL: Volltext

Abstract in another language

The present work provides detailed copolymerization behavior of methyl methacrylate (MMA) with 2-methylene- 1,3-dioxepane (MDP), a cyclic ketene acetal under conventional free radical polymerization conditions at 120 degrees C. An in-sight to the microstructure of the homo- and co-polymers is also made available using I D and 2D NMR spectroscopic techniques. For the first time we showed the formation of crystalline degradable aliphatic polyester, homo poly (2-methylene-1,3-dioxepane) (PMDP) with reduced branches using radical-ring-opening-polymerisation. The copolymerization brought degradability and many other new properties to the poly (methyl methacrylate) (PMMA) vinyl polymer. Various degradable materials based on MMA and 2-methylene-1,3-dioxepane (poly (MMA-co-ester)s) containing varied amounts of ester linkages ranging from amorphous to crystalline and with different glass transition temperatures are generated. The presence of very low fraction of the ester linkages (about 10 mol %) could led to a significant increase in the thermal stability of PMMA. These materials are shown to have beat-shrinkable-shape-memory properties also.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: degradable vinyl polymers; poly (methyl methacrylate); cyclic ketene acetals; microstructure; thermal properties; heat-shrinkable
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: 08 Apr 2015 08:54
Last Modified: 08 Apr 2015 08:54
URI: https://eref.uni-bayreuth.de/id/eprint/9899