【摘要】 本文研究了丙烯酰胺与丙烯酸γ辐射共聚合物分子量控制的方法及其规律。通过添加不同量链转移剂,改变吸收剂量率、反应体系pH值和反应水浴温度,采用不同单体浓度,可以有效地控制聚合物的分子量。得到了转化率为97—100％、羧酸与酰胺基摩尔比为29/71、特性粘数2—32分升/克的水溶性共聚合物。更多还原

【Abstract】 The method and law of controlling the molecular weight of acrylamide-acrylic acid co-polymer prepared by γ-radiation initiation copolymerization were studied. The molecular weight of copolymer can be effectively controlled by the addition of different amounts of chain-transfer agent, by changing the absorbing dose rate, the pH in reaction system and the water-bath temperature, and by using various monomer concentration. Conversion of 97-100% can be reached; and water-soluble copolymer with an intrinsic viscosity (η) of 2 to 32 dl/g can be obtained under the condition of mole ratio of the carboxyl group to the amide group being 29/71.更多还原