摘要
以偶氮二异丁脒盐酸盐(AIBA)与过硫酸铵(APS)组成复合引发体系,采用分段引发法,在水溶液中聚合出了聚丙烯酰胺。以单体浓度、引发剂配比、初引发温度和尿素用量为实验因素,以分子量为考察指标,通过正交试验法得到最佳工艺条件为单体浓度40%,APS∶AIBA为1∶2,初引发时间为1 h,尿素占单体为0.05,合成出的PAM分子量达到550.6万。絮凝性实验表明分子量越高絮凝效果越好,溶解性实验说明合成时加入尿素会有效缩短溶解时间。
Polyacrylamide is synthesized in water solution,by using a complex initiating system composed of Azobisisobutryamide（AIBA）and Ammonium persulfate（APS）,with segmental initiating mode.The experimental factors of monomer concentration,the mass ratio of AIBA to APS,the initial reacting time and the dosage of carbamide（to monomer）on the molecular weight of product are studied.By orthogonal experimental test,the optimal synthesis conditions are：monomer concentration 40%,the mass ratio of AIBA to APS 1∶2,the imitation reaction time 1 hour,the dosage of carbamide 0.05,the molecular weight of polyacrylamide is greater than 550.6×104.The relationship between molecular weight and flocculability,solubility are also examined,the result shows that product with higher molecular weight always has a better flocculent efficiency,while its dissolution rate is slower.
出处
《华东交通大学学报》
2010年第5期43-47,共5页
Journal of East China Jiaotong University
基金
江西省教育厅科技项目(GJJ09511)
作者简介
刘建平（1976-），男，博士，副教授，研究方向为功能高分子。
