中华医学超声杂志

应用化学 ›› 1986, Vol. 0 ›› Issue (6): 76-79.

• 研究简报 • 上一篇    下一篇

聚丙烯酰胺及水解聚丙烯酰胺的粘度对加盐浓度及时间的依赖性

薄淑琴, 郝克君   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1985-09-25 修回日期:1986-05-23 出版日期:1986-12-10 发布日期:1986-12-10
  • 通讯作者: 薄淑琴

DEPENDENCE OF INTRINSIC VISCOSITY OF POLYACRYLAMIDE AND HYDROLYZED POLYACRYLAMIDE ON CONCENTRATION OF ADDED SALT AND TIME

Bo Shuqin, Hao Kejun   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1985-09-25 Revised:1986-05-23 Published:1986-12-10 Online:1986-12-10

PDF

472

被引次数

11

摘要： 高分子量聚丙烯酰胺(PAM)和部分水解聚丙烯酰胺(HPAM)是目前世界上生产量最大的合成水溶性高分子。由于它们在水溶液中只要很低的浓度就具有高粘度的特件,故广泛用作提高石油采收率的堵漏剂和增粮剂。

Abstract: The dependence of the intrinsic viscosities of polyacrylamide(PAM)and hydrolyzed polyacrylamide(HPAM) in water on the concentration of added salt (sodium nitrate) and time was studied.The intrinsic viscosities of HPAM decrease with the increase of the concentration of added salt.When the salt concentration is high,the ratio[η)/M is inversely proportional to the concentration of salt added to the polyelectrolytes. The Solution instability of PAM and HPAM was examined in 1M NaNO3 aqueous solution for samples with different molecular weight and hydrolyzed degree. The solution viscosities decrease with time. After a certain period of storage the ratio ((ηsp/C)t0-(ηsp/C)ti)/(ηsp/C)t0 is found to be proportional to the logarithm of Mw. Mw stands for the apprent molecular weight of HPAM

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