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Electroinitiated copolymerization of N ‐vinylcarbazole and α‐methylstyrene in a mixed biphasic medium
Author(s) -
Sanyal Swati,
Nayak Bimbadhar
Publication year - 1987
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1987.070340407
Subject(s) - comonomer , copolymer , polymer chemistry , monomer , gel permeation chromatography , formamide , polymerization , electrolyte , solvent , materials science , electrolysis , chemistry , organic chemistry , polymer , electrode
The electroinitiated copolymerization of N ‐vinylcarbazole and α‐methylstyrene has been studied using a mixed biphasic system in which formamide together with some added electrolyte has been used as the polar phase and the monomer in bulk form or its solution in a nonpolar solvent as the nonpolar phase. The copolymer has been characterized by elemental analysis, and infrared and nuclear magnetic resonance spectroscopy. Molecular weights obtained from gel permeation chromatography were in the range of 20–25 × 10 3 . Generally the copolymer yield increased with increased applied current density. The effect of various other parameters such as dependence of copolymer yield on concentration of electrolyte and comonomer, temperature, and time of electrolysis have also been examined. The locus of polymerization is the anode compartment and a plausible mechanism based on the electrochemical formation of a radical‐cation and a dication has been suggested.