Journal of Polymer Research

, 20:239 | Cite as

A comprehensive study on the kinetics of aqueous free-radical homo- and copolymerization of acrylamide and diallyldimethylammonium chloride by online 1H-NMR spectroscopy

  • Mahdi Abdollahi
  • Farshid Ziaee
  • Parisa Alamdari
  • Hadis Koolivand
Original Paper


Free-radical homo- and copolymerization of acrylamide (AAm) and diallyldimethylammonium chloride (DADMAC) initiated with potassium persulfate (KPS) were performed in the presence of 0.1 M NaCl solution in D2O at 50 °C. Online 1H-NMR kinetic experiments were used to study polymerization kinetics via determination of the individual and overall conversion of the comonomers and compositions of the comonomer mixture and produced copolymer as a function of the reaction time. Reactivity ratios of the AAm and DADMAC were calculated by Mao-Huglin (MH) and extended Kelen-Tudos (KT) methods to be 7.0855 ± 1.3963, 0.1216 ± 0.0301 and 6.9458 ± 2.0113, 0.1201 ± 0.0437 respectively. “Lumped” kinetic parameter (k p k t − 0.5 ) was estimated from experimental data. Results showed that k p k t − 0.5 value increases by increasing mole fraction of the AAm in the initial reaction mixture. Drift in the comonomer mixture and copolymer compositions with reaction progress was evaluated experimentally and theoretically. Theoretical values were calculated from Meyer-Lowry equation by using reactivity ratios obtained from MH method. A good fitting between the experimental and theoretical values was observed, indicating accuracy of the reactivity ratios estimated in the present work. It was found from following changes in the copolymer composition with the comonomer conversion that produced copolymer has a statistical structure.


Acrylamide Diallyldimethylammonium chloride Free-radical copolymerization Polymerization kinetics Reactivity ratio Composition drift 

Supplementary material

10965_2013_239_MOESM1_ESM.doc (232 kb)
ESM 1 (DOC 231 kb)


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Mahdi Abdollahi
    • 1
  • Farshid Ziaee
    • 2
  • Parisa Alamdari
    • 1
  • Hadis Koolivand
    • 1
  1. 1.Polymer Engineering Department, Faculty of Chemical EngineeringTarbiat Modares UniversityTehranIran
  2. 2.Iran Polymer and Petrochemical InstituteTehranIran

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