Article (Scientific journals)
Polycaprolactone-based block copolymers: 4. Interfacial activity in poly(vinyl chloride) containing polyblends
Heuschen, J.; Vion, J. M.; Jérôme, Robert et al.
1990In Polymer, 31 (8), p. 1473-1480
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Keywords :
Copolymers--Composition Effects; Polystyrenes--Blending; Polyvinyl Chlorides--Blending; Interfacial Activity; Poly(Vinyl Chloride) Containing Polyblends; Polycaprolactone-Based Block Copolymers; Block Copolymers
Abstract :
[en] The substantial difference in the Tg of poly(vinyl chloride) (PVC) and poly(ε-caprolactone) (PCL) offers a sensitive method of locating a polystyrene (PS)-PCL diblock in PVC or in PS/PVC polyblends. When mixed with PVC, these diblocks are dispersed as individual molecules in equilibrium with micelles. The equilibrium position depends on the composition of the diblock; when PCL is the major component, molecular dissolution in PVC is enhanced. A 50 50 PS-PCL diblock, each block of which is of a higher molecular weight than the related homopolymer, is located mainly at the PS/PVC interface, as shown by the essentially unchanged Tg of the PVC matrix and a sub-Tg assigned to the external layer of the PVC phases plasticized by the PCL blocks of the copolymer. Blocks longer than the associated homopolymer chain clearly enhance the mutual anchoring of the PS and PVC phases. Since PS and PVC are intrinsically brittle polymers, their melt blending in the presence of properly designed PS-PCL diblocks gives rise to fragile materials. © 1990.
Disciplines :
Chemistry
Author, co-author :
Heuschen, J.;  Laboratory of Macromolecular Chemistry and Organic Catalysis, University of Liège, Sart Tilman, B6, B-4000 Liège, Belgium
Vion, J. M.;  Laboratory of Macromolecular Chemistry and Organic Catalysis, University of Liège, Sart Tilman, B6, B-4000 Liège, Belgium
Jérôme, Robert ;  Université de Liège - ULiège > Département de chimie (sciences) > Département de chimie (sciences)
Teyssié, Philippe ;  Université de Liège - ULiège > Relations académiques et scientifiques (Sciences)
Language :
English
Title :
Polycaprolactone-based block copolymers: 4. Interfacial activity in poly(vinyl chloride) containing polyblends
Publication date :
1990
Journal title :
Polymer
ISSN :
0032-3861
eISSN :
1873-2291
Publisher :
Elsevier, Netherlands
Volume :
31
Issue :
8
Pages :
1473-1480
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 05 January 2020

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