making process of polyacrylamide examples of Algeria

making process of polyacrylamide examples of Algeria
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  • What is polyacrylamide (PAM)?
  • Polyacrylamide (PAM) is a long chain, linear, water soluble polymeric substance formed from acrylamide (C 3 H 5 NO) subunits, has a high molecular weight of typically from few 1000 to 20 × 10 6 g/mol, and has a very high viscosity in aqueous solutions, depending on the concentration and the degree of polymerization (Sojka et al. 2007).
  • How is polyacrylamide formed?
  • Polyacrylamide is formed by the polymerization of the monomer molecule-acrylamide cross-linked by N,N ′-methylene-bis-acrylamide. Free radicals generated by ammonium persulfate (APS) and a catalyst acting as an oxygen scavenger (– N,N,N′,N′-tetramethylethylene diamine (TEMED)) are required to start the polymerization.
  • What causes polymerization of acrylamide?
  • Apparently, both the initiation of polymerization of acrylamide and the crosslinking of the chains of the resulting polyacrylamide are a consequence of the low stability of the S–S bonds of linear sulphur chains of 1,3-dimethylimidazolium (phosphonooxy-)oligosulphanide. Synthesis of 1,3-dimethylimidazolium (phosphonooxy-)oligosulphanide.
  • How are polyacrylamide gels made?
  • Polyacrylamide gels are made by chemical polymerization of a mixture of acrylamide and bisacrylamide (a cross-linker) in the presence of a catalyst and an initiator of the polymerization reaction. The porosity of the gel is determined by the relative concentration of acrylamide to cross-linker and by the total percentage of monomers.