超临界二氧化碳中改性聚丙烯酰胺的合成  

The synthesis of hydrophobic modified polyacrylamide in supercritical CO_2

作　　者：郑岚[1] 郑玉辉[1] 郗小明[1] 陈开勋[1] 

机构地区：[1]西北大学化工学院,陕西西安710069

出　　处：《西北大学学报（自然科学版）》2008年第2期233-236,242,共5页Journal of Northwest University（Natural Science Edition）

基　　金：陕西省教育厅科研基金资助项目(04JK307)

摘　　要：目的研究超临界二氧化碳中改性聚丙烯酰胺的合成,并对产物进行分析表征。方法单因素法和正交实验设计,并运用多种分析方法进行产物表征。结果引发剂浓度,单体浓度,反应温度,反应时间、CO2压力对聚合反应的转化率和共聚产物相对分子质量均有较为显著的影响,其总的影响规律符合自由基聚合反应的基本规律,并经分析比较,推测出产物的可能结构式。结论超临界CO2+丙酮体系是合成疏水改性聚丙烯酰胺较为理想的反应体系。Aim To study the synthesis of hydrophobic modified polyacrylamide in supercritical CO2 and determine the structure of the product. Methods Single factor and rthogonal polymerization experiments. Results The initiator concentration, monomer concentration, reaction temperature and polymerization reaction time have more significant impact on the conversion rate and the relative molecular mass of product. The polymerization reaction is in accordance with the basic law of radical polymerization reaction. Conclusion Supercritical CO2-acetone field is a perfect reacting field of copolymerization of acrylamide and actyflon. The formula of the product was given.

关 键 词：超临界CO2 聚丙烯酰胺 疏水改性 共聚合 

分 类 号：TQ316.3[化学工程—高聚物工业]