• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Rheological properties of a hydrophobically modified anionic polymer: Effect of varying salinity and amount of hydrophobic moieties
【24h】

Rheological properties of a hydrophobically modified anionic polymer: Effect of varying salinity and amount of hydrophobic moieties

机译：疏水改性的阴离子聚合物的流变特性：盐度和疏水部分数量的变化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Hydrophobically modified polyelectrolytes have been suggested as an alternative to the more commonly used polyelectrolytes in enhanced oil recovery (EOR) applications involving polymers. Compared to regular polyelectrolytes, the hydrophobically modified polyelectrolytes are known to be more stable at high salinities. In this study, we have investigated the influence of brine salinity and ionic composition for a series of six hydrophobically modified polyelectrolytes with the same polymer backbone, but with an increasing average number of hydrophobic groups per polymer molecule. Polymer characterization has been performed using a combination of steady-state shear viscosity and dynamic oscillatory measurements. Hydrophobic interactions leading to a change in rheological properties was only observed above a threshold value for the concentration of hydrophobe. At the threshold value, salt-induced hydrophobic interactions were observed. For higher concentrations of hydrophobe, high salinity solutions showed one order of magnitude increase in viscosity compared to the polymer without hydrophobic groups. This could partly be explained by an increase in elasticity. These findings have important implications for polymer selection for EOR. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43520.
机译：在涉及聚合物的提高采油率（EOR）应用中，已提出疏水改性的聚电解质作为更常用的聚电解质的替代物。与常规聚电解质相比，已知疏水改性的聚电解质在高盐度下更稳定。在这项研究中，我们研究了盐水盐度和离子组成对一系列具有相同聚合物主链的六个疏水改性聚电解质的影响，但每个聚合物分子中疏水基团的平均数目不断增加。使用稳态剪切粘度和动态振荡测量的组合来进行聚合物表征。仅在疏水物浓度的阈值以上观察到导致流变性质改变的疏水性相互作用。在阈值处，观察到盐诱导的疏水相互作用。对于较高浓度的疏水物，高盐度溶液与没有疏水基团的聚合物相比，粘度显示出一个数量级的增加。这部分可以通过弹性增加来解释。这些发现对于EOR的聚合物选择具有重要意义。 （c）2016 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，43520。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号