| 双水相合成法制备聚丙烯酰胺的研究 |
| |
| 引用本文： | 张晓松,李梦耀,郭印丽,李扬,张海龙.双水相合成法制备聚丙烯酰胺的研究[J].陕西化工,2014(2):300-303. |
| |
| 作者姓名： | 张晓松 李梦耀 郭印丽 李扬 张海龙 |
| |
| 作者单位： | [1]长安大学环境科学与工程学院,陕西西安710054 [2]旱区地下水文与生态效应教育部重点实验窀长安大学,陕西西安710054 |
| |
| 摘 要： | 以硫酸铵和亚硫酸氢钠氧化还原体系为引发剂,丙烯酰胺（AM）为单体,聚丙烯酰胺-聚乙二醇（PEG）水溶液为双水相,合成聚丙烯酰胺高分子絮凝剂.考察了引发剂用量、反应时间、PEG总量、单体总量以及pH值对相对分子质量和转化率的影响.结果表明,在单体总量为4％和温度为65℃情况下,最佳工艺条件：时间60 min,引发剂1.5 mL,pH =7,PEG=9％.最佳工艺条件下,丙烯酰胺转化率为88.5％,聚丙烯酰胺相对分子质量为2.84×106.
|
| 关 键 词： | 聚丙烯酰胺 相对分子质量 转化率 自由基共聚合 |
Study on preparation of polyacrylamide by aqueous two-phase polymerization |
| |
| Affiliation: | ZHANG Xiao-song, LI Meng-yao, GUO Yin-li, LI Yang, ZHANG Hal-long ( 1. School of Environmental Science and Engineering, Chang＇ an University, Xi＇ an 710054, China; 2. Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education ( Chang＇ an University) , Xi＇ an 710054, China) |
| |
| Abstract: | Using polyethylene glycol （PEG） aqueous as the dispersed medium of the aqueous two-phase polymerization, uses redox initiator system ammonium persulfate（KPS） and sodium bisulfite, and uses AM for the synthesis of polyacrylamide polymer flocculant. The impact of the amount of initiator, reaction time,the amount of PEG, total monomer and pH value on the relative molecular mass and percent conversion were investigated. The results showed under the total monomer is 4% and temperature is 65 ℃, the optimum process conditions ： reaction time is 60 min, the initiator is 1.5 mL, pH is 7, PEG is 9%. Under the optimum process conditions, the acrylamide conversion is 88.5% , the relative molecular mass of polyacrylamide is 2.84 × 106. |
| |
| Keywords: | polyacrylamide relative molecular mass conversion rate radical copolymerization |
| 本文献已被 维普 等数据库收录！ |
|
