Research On The Polymerization Process Of P(DAC-AM)with Cationicity Of50%via Two Kinds Of Initiator System

Polymerization processes of poly (acryloyloxyethyltrimethyl ammonium chloride-co-acrylamide)[(P(DAC-AM)] with cationicity of50%via two kinds of initiator system were studied in this paper. The two kinds of initator were inorganic peroxide (initiator A) and redox initator (oxidant A-reductant B).Using industrial grade acryloyloxyethyltrimethyl ammonium chloride (DAC) and acrylamide (AM) as the monomers, inorganic peroxide (initiator A) as the initiator and Na4EDTA as chelator, copolymer P(DAC-AM) with cationicity of50%was preparated by a method of adding raw materials in one shot and initiating the polymerization in two temperature points. P(DAC-AM) product with cationicity of50%could be obtained through a series of preliminary experiments and orthonormal experiments. The maximum intrinsic viscosity of colloid product reached15.88dL/g, the monomer conversion rate was91.80%, weight-average molecular weight was1.269×107and weight-average molecular weight of the powder product was1.380×107. The effect of process conditions, such as reaction temperature, monomer mass percentage, initiator dosage, Na4EDTA dosage, maturing temperature and total reaction time on the intrinsic viscosity of the product and monomer conversion were investigated respectively.Using industrial grade acryloyloxyethyltrimethyl ammonium chloride (DAC) and acrylamide (AM) as the monomers, redox initator (oxidant A-reductant B) as the initiator and Na4EDTA as chelator, copolymer P(DAC-AM) with cationicity of50%was preparated by a method of adding raw materials in one shot and initiating the polymerization in two temperature points. P(DAC-AM) product with cationicity of50%could be obtained through a series of preliminary experiments and orthonormal experiments. The maximum intrinsic viscosity of the colloid product reached21.19dL/g, the monomer conversion rate was85.63%, weight-average molecular weight was2.088×107and weight-average molecular weight of the powder product was2.257×107. The effect of process conditions, such as reaction temperature, monomer mass percentage, initiator dosage, Na4EDTA dosage, maturing temperature and total reaction time on the intrinsic viscosity of the product and monomer conversion were investigated respectively.The preparation methods of high molecular weight P(DAC-AM) with cationicity of50%by aqueous copolymerization were established through the above researches. The methods were economic security and easy to operate, which could be a well fundamental for preparation process of P(DAC-AM) with high, a series of intrinsic viscosities in the laboratory and industry.