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Polymerization of methyl methacrylate in water and water–ethylene glycol mixtures
Author(s) -
Badran A. S.,
ElHakim A. A. Abd,
Ayoub M. M. H.,
Younan A. F.
Publication year - 1992
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.1992.070450215
Subject(s) - ethylene glycol , polymerization , methyl methacrylate , sodium bisulfite , polymer chemistry , monomer , bulk polymerization , solution polymerization , chemistry , polymer , methacrylate , radical polymerization , materials science , organic chemistry
The polymerization of methyl methacrylate (MMA) was carried out in water and in water‐ethylene glycol (EG) mixtures using sodium bisulfite as initiator. The rate of polymerization was found to be dependent on the initiator, the monomer, and ethylene glycol concentrations to the powers 0.68, 1.08, and 1.5, respectively. Addition of ethylene glycol increased both the rate of polymerization and the viscosity average molecular weights of the obtained polymers, while the rate of polymerization was found to decrease with temperature. The apparent activation activation energies were found to be 13.79 and 10.45 kJ/mol in water and in water‐ethylene glycol mixture (50/50) (v/v), respectively.