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Kinetic study of the polymerization of dimethyldiallylammonium chloride and acrylamide
Author(s) -
Bi Kezhen,
Zhang Yuejun
Publication year - 2012
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.35638
Subject(s) - polymerization , monomer , acrylamide , ammonium persulfate , aqueous solution , reactivity (psychology) , chemistry , nuclear chemistry , ammonium chloride , chloride , kinetics , persulfate , polymer chemistry , polymer , organic chemistry , catalysis , medicine , physics , alternative medicine , pathology , quantum mechanics
The kinetics of the polymerization of dimethyldiallylammonium chloride (DMDAAC) and acrylamide (AM) with different monomer molar ratios initiated by an ammonium persulfate–sodium bisulfate redox complex in an aqueous solution were studied. The polymerization rate ( R p ) equation, the activation energy ( E a ), and the reactivity ratio were measured. The results show that when the n DMDAAC : n AM values were 1 : 9, 2 : 8, 3 : 7, 4 : 6, and 5 : 5, the copolymerization rate equation were R p 1 = k [M] 2.61 [I O ] 0.51 [I R ] 0.52 , R p 2 = k [M] 2.70 [I O ] 0.50 [I R ] 0.53 , R p 3 = k [M] 2.73 [I O ] 0.50 [I R ] 0.56 , R p 4 = k [M] 2.77 [I O ] 0.51 [I R ] 0.59 , and R p 5 = k [M] 2.84 [I O ] 0.51 [I R ] 0.61 (where [M] is the total monomer concentration, [I O ] is the oxidant concentration, and [I R ] is the reductant concentration), respectively when the temperature was 45°C. The E a values were E a 1 = 79.10 kJ/mol, E a 2 = 81.39 kJ/mol, E a 3 = 85.15 kJ/mol, E a 4 = 88.88 kJ/mol, and E a 5 = 90.61 kJ/mol in the temperature range 35–55°C, respectively. The reactivity ratios of DMDAAC and AM were r DMDAAC = 0.14 and r AM = 6.11 when the temperature was 45°C. The structure of PDA was characterized by Fourier transform infrared spectroscopy and 1 H‐NMR. The results of the kinetic parameters explained the differences in the copolymerization rate and intrinsic viscosity of PDA with different cationicities. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012