聚丙烯酰胺亲水基改性研究

Modification of Polyacrylamide by Introducing Hydrophilic Groups

通过化学接枝反应,在水解型聚丙烯酰胺的大分子上引入少量相对分子质量为6000的聚乙二醇亲水基团支链,得到一种主链和支链都具有亲水性,但两者间又产生微观相分离的新型亲水改性接枝共聚物(HPAA-g-PEO)。改性聚丙烯酰胺流变性能的测定结果表明,其抗盐、抗剪切等性能有明显提高,可以作为一种性能优异的驱油用增稠剂。

A new hydrophilic modified copolymer( PAA-g-PEO) was synthesized by chemical grafting polyethy-lene oxide side chain with molecular weight of 6 000 onto the main chain of polyacrylamide(PAA). Rheological be-haviors of PAA-g-PEO were determined by rotational viscometers. The results showed that the salt resistance and shearing resistance were obviously improved. It can be used as oil thickener for driver's oil with excellent properties.