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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (15): 1760-1764. 上一篇    下一篇

研究论文

Mg-Fe-HTlc对黄原胶流变性的影响

李丽芳*, 王莉, 王建伟, 王冬青   

  1. (山东农业大学化学与材料科学学院 泰安 271018)
  • 投稿日期:2010-10-09 修回日期:2011-03-30 发布日期:2011-04-15
  • 通讯作者: 李丽芳 E-mail:fangll@sdau.edu.cn
  • 基金资助:

    甲氨基阿维菌素苯甲酸盐－HTlc纳米控释系统的研制及性能研究

Influence of Mg-Fe-HTlc on Xanthan Gum Rheological Properties

LI Li-Fang, WANG Li, WANG Jian-Wei, WANG Dong-Qing   

  1. (College of Chemistry ＆ Material Science, Shandong Agricultural University, Taian 271018)
  • Received:2010-10-09 Revised:2011-03-30 Published:2011-04-15
  • Contact: lifang li E-mail:fangll@sdau.edu.cn

PDF

1143

被引次数

15

研究了荷负电高分子物质黄原胶(XG)及类水滑石HTlc/XG复合悬浮体系的流体类型及触变性. 结果发现, 供试体系流变曲线都符合Herschel-Bulkley模型. 在0.05～0.20 wt%范围内, 随XG含量增加, XG溶液表现出由假塑性流体到塑性流体的转变, 没有触变性|1.5 wt%纯HTlc悬浮体系为牛顿流体, 无触变性. 当HTlc/XG质量比为29.0～6.5时(复合悬浮体系固含量保持为1.5%), 体系均表现为假塑性流体|除HTlc/XG质量比为29.0体系无触变性外, 其它复合悬浮体系均表现为正触变性.

关键词: 黄原胶, 类水滑石, 流体类型, 触变性

The rheological properties of xanthan gum (XG) and hydrotalcite-like compounds (HTlc for short)/XG mixed suspension, such as fluid type and thixotropy, have been investigated. Especially, we focus on the effect of concentration of XG and mass ratio of HTlc to XG. Herschel-Bulkley fluid model was used to analysis the obtained data. When XG concentration was in the range of 0.05～0.20 wt%, the systems changed from pseudoplastic fluid to plastic one, and no thixotropy. 1.5 wt% pure HTlc suspension belongs to Newtonian fluid type, still no thixotropy. When changing mass ratio of mHTlc/mXG from 29.0 to 6.5 (the solid content of mixed HTlc/XG systems fixed as 1.50%), the mixed suspension, all behaved as pseudoplastic fluid type and show positive thixotropic property, except system at mass ratio of 29.0.

Key words: xanthan gum, hydrotalcite-like compound, fluid type, thixotropy