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Synthesis and solution properties of polymeric zwitterionic ammonium betains

Posted on:1999-03-28Degree:M.SType:Thesis
University:King Fahd University of Petroleum and Minerals (Saudi Arabia)Candidate:Rasheed, AsifFull Text:PDF
GTID:2461390014967998Subject:Chemistry
Abstract/Summary:
The quaternary ammonium salt, N,N-diallyl-N-carboethoxymethyl-N-methylammonium chloride (8), has been synthesized in excellent yield. The monomer 8 on polymerization in water solution using ammonium persulfate as initiator afforded the polyelectrolyte 10. The polyelectrolyte 10 on acidic hydrolysis gave the polyampholyte 11 in excellent yield. The solution properties of these polymers are discussed in detail. The polyampholyte 11 showed "antipolyelectrolyte" behaviour.; The copolymer 12 of quaternary ammonium salt, N,N-diallyl-N-carboethoxymethyl-N-methylammonium chlolide (8) and sulfur dioxide has been synthesized in excellent yield. The polyelectrolyte 12 on acidic hydrolysis gave the polyampholyte 13 readily in excellent yield. The solution properties of these polymers are discussed in detail. The polyampholyte 13 was found to be insoluble in water but dissolved readily in presence of low molecular weight common salts. The polyampholyte shows "antipolyelectrolyte" behaviour; the viscosity of the polyampholyte increases by increasing the ionic strength of its aqueous solutions.
Keywords/Search Tags:Solution, Ammonium, Excellent yield, Polyampholyte
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