Reference : Single-step reactive extrusion of PLLA in a corotating twin-screw extruder promoted by 2...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/11841
Single-step reactive extrusion of PLLA in a corotating twin-screw extruder promoted by 2-ethylhexanoic acid tin(II) salt and triphenylphosphine
English
Jacobsen, S. [University of Stuttgart, Germany > > Institut für Kunststofftechnologie (IKT) > >]
Fritz, H. G. [University of Stuttgart, Germany > > Institut für Kunststofftechnologie (IKT) > >]
Degée, Philippe [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Dubois, Philippe [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Jérôme, Robert mailto [University of Liège (ULg) > Department of Chemistry > Center for Education and Research on Macromolecules (CERM) > >]
Apr-2000
Polymer
Elsevier Sci Ltd
41
9
3395-3403
Yes (verified by ORBi)
International
0032-3861
Oxford
[en] ring-opening polymerization (ROP) ; lactone
[en] The ring opening polymerisation of L,L-lactide using an equimolar complex of 2-ethylhexanoic acid tin(II) salt Sn(Oct)2 and triphenylphosphine P( )3 as catalyst shows for the first time a reactivity providing a polymerisation propagation rate fast enough to imagine a continuous single-step reactive extrusion process for bulk polymerisation. The ring opening polymerisation has been realised on a corotating closely intermeshing twin-screw extruder, using a specially designed screw concept to provide sufficient energy input and mixing for further enhancement of the propagation rate, without detrimentally enhancing depolymerisation or transesterification reactions. Using one chosen screw and processing concept on a twin-screw extruder with 25 mm diameter and a L/D-ratio of 48, the influence of different processing parameters on the resulting molecular parameters of the Polylactide (PLA) has been determined. Furthermore, the mechanical property profile of the generated PLA-polymers is discussed and related to the molecular parameters.
Center for Education and Research on Macromolecules (CERM)
The European Commission for the AIR-project "Development of innovative biodegradable polylactic acid-polymers, based on agricultural raw materials for new industrial applications"
Researchers
http://hdl.handle.net/2268/11841
10.1016/S0032-3861(99)00507-8
http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6TXW-3YBB8M7-15-X&_cdi=5601&_user=532038&_orig=browse&_coverDate=04%2F30%2F2000&_sk=999589990&view=c&wchp=dGLbVtz-zSkWz&md5=e1677940b13b1f829f50da55104d14ef&ie=/sdarticle.pdf
http://www.elsevier.com/wps/find/journaldescription.cws_home/30466/description#description
The authors acknowledge Polymer (Elsevier) for allowing them to archive this paper.

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