摘要
采用反相乳液聚合法,合成丙烯酰胺-丙烯酸钠共聚物絮凝剂,共聚单体丙烯酰胺与丙烯酸投料的摩尔比为1∶1,考察了单体浓度、引发剂浓度、乳化剂用量、亲水亲油平衡值(HLB值)、油水体积比及乙二胺四乙酸二钠用量对共聚物特性粘数([η])的影响。实验结果表明,在单体用量为52g/mL(以每毫升水中单体的克数计)、油水体积比为1.5时,体系最稳定;氧化剂的浓度为3.3mmol/L时,共聚物特性粘数最大;在HLB值为5.30、乳化剂质量浓度为4.5g/mL时,絮凝效果最好;乙二胺四乙酸二钠用量(占单体的质量)的最佳值为0.24%,共聚物特性粘数达到最大。
Acrylamide - sodium acrylate copolymer used as flocculant was synthesized by inverse emulsion polymerization, in which mole ratio of comonomers was 1:1. Effect of monomer concentration, oxidant concentration, emulsifier concentration, HLB value of polymerization system, oil phase/water phase volume ratio, disodium ethylene diamine tetraacetate (EDTA disodium) dosage on intrinsic viscosity of copolymer were investigated. Optimum conditions were: monomer concentration, 52 g/mL in aqueous phase; oxidant concentration, 3.3 mmol/L in oil phase; emulsifier concentration, 4.5 g/mL in aqueous phase; HLB value, 5.30; oil phase/water phase volume ratio, 1.5 and mass fraction of EDTA disodium, 0.24% in aqueous phase. Structure of the copolymer was characterized by mass of infrared spectrometry. Residual amount of harmful monomer AM in copolymer and flocculating effect of copolymer were studied.
出处
《石油化工》
EI
CAS
CSCD
北大核心
2005年第4期338-342,共5页
Petrochemical Technology
关键词
反相乳液聚合
丙烯酰胺
丙烯酸钠
特性粘数
絮凝剂
丙烯酰胺-丙烯酸钠共聚物
inverse emulsion polymerization
acrylamide
sodium acrylate
intrinsic viscosity
flocculant
acrylamide-sodium acrylate copolymer
