物理化学学报 >> 2005, Vol. 21 >> Issue (12): 1411-1414.doi: 10.3866/PKU.WHXB20051217

研究简报 上一篇    下一篇

层状液晶的小振幅振荡频率扫描研究

王红霞;张高勇;刘滇生;张新伟;肖永红   

  1. 山西大学化学学院, 太原 030006;2太原市国家高新技术开发区, 太原 030006;3中国日用化学工业研究院, 太原 030001
  • 收稿日期:2005-04-20 修回日期:2005-06-08 发布日期:2005-12-15
  • 通讯作者: 王红霞 E-mail:fgywhx@163.com

Small Amplitude Oscillation Frequency Sweep of Lamellar Liquid Crystal

WANG Hong-Xia;ZHANG Gao-Yong;LIU Dian-Sheng;ZHANG Xin-Wei;XIAO Yong-Hong   

  1. Department of Chemistry, Shanxi University, Taiyuan 030006;Taiyuan National High-Tech Industrial Development Zone, Taiyuan 030006; China Research Institute of Daily Chemical Industry, Taiyuan 030001
  • Received:2005-04-20 Revised:2005-06-08 Published:2005-12-15
  • Contact: WANG Hong-Xia E-mail:fgywhx@163.com

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摘要： 利用小振幅振荡频率扫描研究了非离子表面活性剂所形成的层状液晶的粘弹性, 考察了表面活性剂的浓度、温度, 硝酸银的加入和银的生成对其影响. 结果表明: 储能模量(G′)和损耗模量(G″)随表面活性剂浓度增大而增大; 随温度升高出现三种不同的频率扫描曲线; 硝酸银的加入和银的生成对曲线的形状没有影响, 对G′和G″值的影响随过渡区和单相区的不同而不同.

关键词: 层状液晶, 流变性, 频率扫描

Abstract: The viscoelastic properties of lamellar liquid crystal, formed by non-ionic surfactant, were studied with small amplitude oscillation frequency sweep, and the effects of surfactant concentration, temperature , AgNO3 and as-produced Ag on them were investigated. The results show that, storage modulus (G′) and loss modulus(G″)increase with increasing surfactant concentration; three different kinds of frequency sweep curves appear with increasing temperature; AgNO3 and as-produced Ag have no effects on the shape of curves, but their effects on the magnitude of G′and G″are different for transitional and pure lamellar phases.

Key words: Lamellar liquid crystal, Rheology, Frequency sweep