Reference : Synthesis and characterization of random copolyesters of epsilon-caprolactone and 2-oxep...
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/1071
Synthesis and characterization of random copolyesters of epsilon-caprolactone and 2-oxepane-1,5-dione
English
Latere Dwan'Isa, Jean-Pierre [Université de Liège - ULg > > Centre d'études et de rech. sur les macromolécules (CERM) > >]
Lecomte, Philippe mailto [Université de Liège - ULg > > Centre d'études et de rech. sur les macromolécules (CERM) >]
Dubois, Philippe [Université de Mons-Hainaut - UMH > > Laboratory of Polymeric and Composite Materials (SMPC) > >]
Jérôme, Robert mailto [Université de Liège - ULg > > Centre d'études et de rech. sur les macromolécules (CERM) >]
22-Apr-2003
Macromolecules
Amer Chemical Soc
36
8
2609-2615
Yes (verified by ORBi)
International
0024-9297
Washington
[en] ring-opening polymerization ; lactone
[en] 2-Oxepane-1,5-dione (OPD) has been synthesized by the Baeyer-Villiger oxidation of 1,4-cyclohexanedione and copolymerized with epsilon-caprolactone. This random copolymerization has been initiated by different metal derivatives, i.e., tin octanoate, dibutyltin dimethoxide, and aluminum isopropoxide. Dibutyltin dimethoxide is the preferred initiator, and the course of polymerization is controlled by the competition of the ketone of OPD and the ester of the lactones for coordination to the initiator. Semicrystalline copolymers are formed, whose the randomness has been confirmed by DSC, H-1 NMR, and C-13 NMR analysis. A single melting temperature (Tm) has been observed, which varies regularly and monotonically with the OPD content as result of a cocrystallization phenomenom. The single glass transition temperature (Tg) obeys the Fox equation.
Center for Education and Research on Macromolecules (CERM)
Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy ; Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Solvay
Researchers
http://hdl.handle.net/2268/1071
10.1021/ma025973t
http://pubs.acs.org/doi/pdf/10.1021/ma025973t

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