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Preparation and properties of amphoteric polyacrylamide by seeded dispersion polymerization in ammonium sulfate solution
Author(s) -
Wang Chuanxing,
Wang Xiaoxiang,
Miao Chunbao,
Wu Yumin
Publication year - 2011
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21959
Subject(s) - dispersion polymerization , polyacrylamide , polymerization , materials science , dispersion (optics) , monomer , viscometer , polyelectrolyte , polymer chemistry , intrinsic viscosity , viscosity , polymer , particle size , ammonium chloride , chemical engineering , particle (ecology) , analytical chemistry (journal) , chemistry , chromatography , composite material , organic chemistry , physics , oceanography , geology , optics , engineering
Amphoteric polyacrylamide (AmPAM) was prepared successfully through seeded dispersion polymerization with acrylamide, methacrylatoethyl trimethyl ammonium chloride and acrylic acid as comonomers in ammonium sulfate solution. It was characterized by 1 H nuclear magnetic resonance ( 1 H NMR) and elemental analysis. The particle morphology and apparent viscosity of polymer dispersion were obtained by optical microscope and rotary viscometer, respectively. AmPAM dispersion was obtained with low apparent viscosity. The process was smooth without high viscosity stage. The data of 1 H NMR spectrum and elemental analysis indicated that all monomers had participated in the polymerization. The seeded reaction time and the mass ratio of two parts of monomers had significant effects on the dispersion polymerization. The best conditions were seeded reaction time 1.75h and the mass ratio 0.75. The apparent viscosity of AmPAM dispersion depended on the number of particles, particle size and low molecular weight polymer concentration in the continuous phase. AmPAM showed both anti‐polyelectrolyte effect and polyelectrolyte effect. POLYM. ENG. SCI., 2011. © 2011 Society of Plastics Engineers