Studies On The Synthesis And Properties Of Acrylamide-based Polymers Via SET-LRP

In this paper, acrylamide homopolymer and copolymer with star structure were synthesized. The single electron transfer living radical polymerization menthod(SET-LRP) was used to synthesis binary copolymer by using acrylamide(AM), sodium acrylate(AA-Na) and 2-acrylamide-2-methylpropane sulfonate(NaAMPS) as the monomers.The influence to reaction investigated at different conditions were as follows.1、Tris(2-aminoethyl)amine(Me6-TREN) was synthesized by using TREN, formaldehyde and methanoic acid as the monomers at 120±0.1 ℃.And the products were characterized via FT-IR and 1H NMR. The results showed that the products which synthesized were target products.2、Using acrylamide(AM) as monomer, using Cu as catalyst, using hexamethy-tris(2-aminoethyl) amine(Me6-TREN) as ligand, using chloroform and terachloroethane as initiator respectively, and water as solvent, the SET-LRP method was used to synthesis polyacrylamide at 25.0±0.1 ℃. And the products were characterized via FT-IR. The result showed that the products which synthesized were target products.3、Using chloroform as initiator,using acrylamide(AM) as monomer,using Cu as catalyst, using hexamethy-tris(2-aminoethyl) amine(Me6-TREN) as ligand, and water as solvent, the SET-LRP method was used to synthesis binary copolymer P(AM-co-AA-Na)and P(AM-co-AMPS)at 25.0±0.1 ℃. And the products were characterized via FT-IR. The result showed that the products which synthesized were target products.4、The effect to binary copolymerization was investigated via CuCl2, catalyst, initiator and temperature. The results showed that with the time increasing, the conversion rate incrased linearly. ln([M]0/[M])and time also showed good linear relationship which performed first-order kinetics. This indicated that the polymerization was a living polymerization.With the temperature increasing, monomer conversion rising, ln([M]0/[M])and time also showed good linear relationship, the relative molecular mass of the polymer showed a trend of first increases and then.With the amount of catalyst increasing, monomer conversion, ln([M]0/[M])and the relative molecular mass of the polymer showed a trend of first increases and then. With the amount of initiator increasing, monomer conversion rised, ln([M]0/[M]) decreased and monomer conversion reduced.