摘要
高分子量部分水解聚丙烯酰胺（HPAM）分子结构为线性柔性长链构型。在盐溶液中．由于盐离子的存在减弱了基团间的排斥作用．使分子主链卷曲．流体力学体积减小．导致粘度急剧下降。当分子链上有支链结构的侧基时．由于空间位阻效应，使分子的内旋转受到阻碍，分子链的卷曲度受到限制．使得分子链相对更为伸展．刚性相对更强．分子链流体力学尺寸更大．宏观上表现出高分子聚合物的抗盐增粘性越好．从而提高了聚合物的耐温抗盐性能。
Salt- endurable co-polymer ZY-65 was synthesized by copolymerizing N- tertiary butyl acrylamide, AMPS and acrylamide.The rigidity of molecule chain of this polymer was enhanced due to the space sterical hindrance formed by the lateral groups on the branches,this copolymer exhibited molecular weight similar to the hydrolyzed polyacrylamide(HPAM) and good viscosity increasing ability,so its stability in brine would be improved to a certain degree.
出处
《精细与专用化学品》
CAS
2009年第7期21-22,共2页
Fine and Specialty Chemicals
