摘要
在水溶液中以过硫酸铵((NH4)2S2O8)和亚硫酸氢钠(NaHSO3)为引发体系,利用原位聚合法合成了聚丙烯酰胺(PAM)-氢氧化铁(Fe(OH)3)有机-无机杂化型高分子絮凝剂。通过正交实验得到合成杂化絮凝剂的最佳条件为:反应温度40°C,引发剂质量分数0.5%,丙烯酰胺质量分数30%,反应时间7 h。FT-IR、TGA以及电导率测试结果表明,杂化型PAM链的端基(-SO24-)与带正电荷的Fe(OH)3胶体粒子通过离子键键合。絮凝实验结果显示,PAM-Fe(OH)3杂化型高分子絮凝剂的最佳质量浓度为40 mg/L,且在此质量浓度下,杂化型高分子絮凝剂的絮凝效果明显优于聚硫酸铁(PFS)或PAM单独使用时的絮凝效果。
A novel flocculant based on PAM-Fe（OH）3 hybrid was synthesized with a redox initiation system composed of（NH4）2S2O8-NaHSO3.The effects on intrinsic viscosity of PAM-Fe（OH）3 hybrid were studied using orthogonal test method.Results showed that the optimum reaction conditions were as follows： temperature 40 °C,mass fraction of initiator 0.5%,reaction time 7 h,the monomer mass fraction,30%.PAM-Fe（OH）3 hybrid was characterized by FT-IR spectroscopy,TGA,and conductivity measurement.An ionic bond existed between Fe（OH）3 colloid and polyacrylamide（PAM） chains in the hybrid.Flocculation studies showed that the optimal dosage was 40 mg/L and the hybrid flocculant was superior to polyferric sulfate（PFS） or PAM.
出处
《功能高分子学报》
CAS
CSCD
北大核心
2011年第2期149-153,共5页
Journal of Functional Polymers
