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Anionic synthesis and characterization of poly(4‐vinylpyridine)‐poly(dimethylsiloxane) block copolymers
Author(s) -
Nugay N.,
Küçükyavuz Z.,
Küçükyavuz S.
Publication year - 1993
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990320115
Subject(s) - copolymer , polymer chemistry , differential scanning calorimetry , polymerization , materials science , anionic addition polymerization , siloxane , solvent , chemistry , polymer , organic chemistry , physics , composite material , thermodynamics
Poly(4‐vinylpyridine)‐b‐Poly(dimethylsiloxane) (P4VP‐b‐PDMS) copolymers have been synthesized by sequential anionic polymerization of 4VP and hexamethylcyclotrisiloxane at — 70°C. The initiator was sodium naphthenate. The solvent used during reactions has a very critical role in an homogeneous polymerization medium. A 1:1 pyridine/THF mixture was found to be the most suitable. The products were characterized by 1 H‐NMR spectroscopy, transmission electron microscopy (TEM) and differential scanning calorimetry (DSC) techniques. All the results indicated the formation of 4‐vinylpyridine‐siloxane block copolymers. Also, the P4VP blocks can be completely quaternized with methyl iodide as indicated by 1 H‐NMR and FTIR spectroscopies.