Premium
Free radical kinetics of N ‐methyl N ‐vinyl acetamide polymerization at low conversions in aqueous media
Author(s) -
Cizravi J. C.
Publication year - 2000
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 - 10.1002/1097-4628(20010110)79:2<337::aid-app170>3.0.co;2-w
Subject(s) - polymer chemistry , monomer , polymerization , aqueous solution , acetamide , chemistry , radical polymerization , kinetics , bulk polymerization , cationic polymerization , propane , solution polymerization , polymer , organic chemistry , physics , quantum mechanics
N ‐methyl N ‐vinyl acetamide (NMNVA) monomer was polymerized at low conversions and its free radical kinetics were detailed using capillary dilatometry. The polymerizations were conducted isothermally, at 40°C using 2,2′‐azobis[2‐(2‐imidazolin‐2‐yl) propane dihydrochloride] (ABDH) as initiator. Monomer concentration and initiator concentration ranges were 1.10–1.70 mol · L −1 and 1–4 mmol · L −1 , respectively. The aqueous polymerization media were kept at neutral pH. The rates of polymerization ( R p ) and orders of reaction with respect to NMNVA and ABDH concentrations were evaluated and the kinetic expression was found to be ideal, with R p ∝ [NMNVA] 1.07 [ABDH] 0.61 . The polymers obtained were characterized by their viscosity numbers and correlation of viscosity average molecular weights was made with the amount of ABDH initiator. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 79: 337–341, 2001