R-ATRP of Acrylamide under the Action of Iron Complex System in Inverse Emulsion

Abstract:

Reaction of acrylamide in inverse emulsion, adding Fe (EDTA)^2-, with ammonium persulfate (APS) to form complex initiation system, Fe (EDTA)^{2 -} is oxidized to Fe (EDTA)^-, the control effect of the Fe (EDTA)^- in the inverse emulsion polymerization of acrylamide was discussed. The results showed that acrylamide in inverse emulsion polymerization reaction by adding Fe (EDTA)^2-, When the complex concentration is 2.8×10^-4mol/L, n [(NH₄)₂S₂O₈]::n (FeSO₄):n (Na₂EDTA)=1:1:1.10, the reaction time was 6 hours, the amount of emulsifier is 3%,the reaction temperature is 40°C , The rate of conversion of monomer Increased in linear relationship with molecular weight, the final rate of conversion of monomer was 93.16%;a kinetic curve showed a good linear relationship, the coefficient of linear correlation was 0.997,Therefore, the Fe (EDTA) ^{2 -} have dual role firstly as a reducing agent of an oxidation - reduction initiator system and secondly as potential catalyst in reverse atom transfer radical polymerization (RATRP) .

• Periodical: Advanced Materials Research (Volumes 781-784)
• Pages: 521-525
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.781-784.521
• Online since: September 2013
• Authors: Qian Yun Wang, Ya Feng Cao, Ye Tian, Zhao Li Liu, Yuan Li, Feng Zhi Tan
• Keywords: Acrylamide, Emulsion Polymerization, Reverse Atom Transfer Radical Polymerization

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