| 疏水改性羟乙基纤维素的流变性能研究 |
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| 引用本文： | 张恒,刘丽丽,赵娜娜,张岩冲.疏水改性羟乙基纤维素的流变性能研究[J].化学研究与应用,2012,24(4):560-564. |
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| 作者姓名： | 张恒 刘丽丽 赵娜娜 张岩冲 |
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| 作者单位： | 1. 青岛科技大学化工学院,山东青岛266042;南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京210037
2. 青岛科技大学化工学院,山东青岛,266042 |
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| 基金项目： | 江苏省制浆造纸科学与技术重点实验室开放基金 |
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| 摘 要： | 对疏水改性羟乙基纤维素(HMHEC)溶液的流变性质进行了系统研究,探讨了不同的浓度、温度、盐浓 度、pH值和剪切速率对其溶液表观粘度的影响.结果表明HMHEC溶液临界缔合浓度为0.3 g/100 ml.当HMHEC的浓度低于临界缔合浓度时,HMHEC溶液增稠以分子内缔合为主,增稠幅度小；当高于临界缔合浓度后,便会形成以大分子间缔合为主的动态物理交联网络结构.HMHEC水溶液具有良好的耐温耐盐及抗剪切性能,而且pH稳定性良好.
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| 关 键 词： | 疏水改性羟乙基纤维素 流变 临界聚集浓度 |
Study of rheological behavior of modified hydroxyethyl cellulose solutions |
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| ZHANG Heng
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LIU Li-li
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ZHAO Na-na
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ZHANG Yan-chong.Study of rheological behavior of modified hydroxyethyl cellulose solutions[J].Chemical Research and Application,2012,24(4):560-564. |
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| Authors: | ZHANG Heng LIU Li-li ZHAO Na-na ZHANG Yan-chong |
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| Institution: | 1(1.School of Chemical Engineering,Qingdao University of Science&Technology,Qingdao,Shandong 266042 China;2.Jiangsu Provincial Key Laboratory of Pulp and Paper Science and Technology,Nanjing Forestry University,Nanjing,Jiangsu 210037 China |
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| Abstract: | The rheological properties of HMHEC solution were comprehensively studied and the influence of concentration,temperature,salinity,pH value and shearing rate on apparent viscosity was discussed.The results showed that the critical associating concentration value of the HMHEC solution was 0.3g /100ml.When the concentration value is under the critical associating concentration value,it is intramolecular association that generates a weak thickening function.When the concentration value is greater than the critical associating concentration value,it is intermolecular association and dynamic physical crosslinking network structure that generates a strong thickening function.HMHEC solution has good properties of heat resistance,salt resistance,shear resistance and pH stability. |
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| Keywords: | hydrophobically modified hydroxyethyl cellulose rheology critical aggregation concentration |
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