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《Polymer Materials Science & Engineering》 2012-05
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Polymerization of AM Inverse Microemulsion Initiated Directly by UV Radiation

Long Xie1,2,Ziqiang Shao2(1.College of Chemical Engineering and Environment,North University of China,Taiyuan 030051,China;2.College of Material Science and Engineering,Beijing Insititude of Technology,Beijing 100081,China)  
By combining the microemulsion polymerization with UV direct initiation,an efficient method for polymerization of AM with high polymerization rate and purity of product,low polymerization temperature and viscosity was developed.In the absence of initiator and under UV radiation,the polymerizations of AM inverse microemulsion system were successfully accomplished at low temperature(24 ℃-30 ℃) and PAM microlatex was obtained.The effects of UV intensity,monomer concentration,emulsifier concentration and temperature on polymerization rate and intrinsic viscosity of polymer were researched.Rp decreased with [E] and increased with IUV,[M] and T.[η] increased with [M] and decreased with IUV,[E] and T.The apparent activation energy of the reaction and polymerization kinetics of Rp was obtained as the following: Ea=12.98 kJ/mol,Rp∝0.4972[M]1.5048[E]-0.5731.Based on the abundant experimental results,the reasonable polymerization mechanisms were proposed.
【CateGory Index】: TQ316.334
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【Citations】
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