阳离子淀粉/Mg-Al类水滑石悬浮体系的粘度行为  

Viscosity of Cationic Starch/Mg-Al-HTlc Suspension

作　　者：李燕[1] 侯万国[2] 

机构地区：[1]长治学院生化系 [2]山东大学胶体与界面化学教育部重点实验室,济南250100

出　　处：《应用化学》2008年第8期974-976,共3页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金(20273041和20573065);教育部高等学校博士学科点专项科研基金(20040422047)资助项目

摘　　要：研究了阳离子淀粉（CS）／Mg—Al类水滑石（HTlc）悬浮体系的粘度行为。分别考察了pH值对CS水溶液粘度的影响，考察了Mg-Al—HTlc与CS固体质量比值（R）及体系pH值对CS／Mg—Al-HTlc悬浮体粘度的影响。结果发现，CS水溶液在pH值为3～4时的粘度最大，强酸强碱条件下粘度急剧降低；当pH值为8．68～8．80时，CS／Mg—Al-HTlc悬浮体的粘度随Mg—Al-HTlc的加入（R值的增加）先增加后降低，出现一极值。随着R值的增大，CS／Mg—Al-HTlc体系出现最大粘度值所对应的pH值也增大。低pH值时，R值小的CS／Mg—Al-HTlc体系粘度最大；高pH值时，尺值大的CS／Mg—Al-HTlc体系粘度最大。The influence of pH value on the viscosity of cationic starch（CS） solution, the mass ratio（R） of Mg-Al-hydrotalcite-like compound（Mg-Al-HTIc） to CS and the pH value on the viscosity of CS/HTlc suspension were studied. The results showed that the viscosity of CS solution had a maximum when the solution pH was in a range of 3 - 4. The viscosity of CS/Mg-Al-HTlc suspension increased at first and then decreased with the increase of the R value at pH 8.68 - 8. 80. The pH at which the viscosity of CS/Mg-Al-HTlc suspension had a maximum increased with the R increasing. At a low pH, the CS/Mg-Al-HTlc suspension with a low R value had the highest viscosity, and at a high pH value, the CS/Mg-Al-HTlc suspension with a high R value had the highest viscosity.

关 键 词：阳离子淀粉 Mg—Al类水滑石 流变性 粘度 

分 类 号：O648[理学—物理化学]