| DSC法研究液晶物质2-(4-烷氧苯基)6-取代苯并噻唑的相变热性质 |
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| 引用本文： | 陆振荣,杨立.DSC法研究液晶物质2-(4-烷氧苯基)6-取代苯并噻唑的相变热性质[J].物理化学学报,1992(1). |
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| 作者姓名： | 陆振荣 杨立 |
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| 作者单位： | 苏州大学中心实验室，苏州大学中心实验室 苏州 215006，苏州 215006 |
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| 摘 要： | 众所周知,液晶类物质常因其特殊的理化性质而引起人们的兴趣,而拥有多种介晶相(mesomorphous phase)则为其主要特点之一.对于测定该类物质各种相变之间的热性质,差示扫描量热法(DSC)通常有其独特之处。2-(4-烷氧苯基)-6-取代苯并噻唑化合物为苏州大学化学系新研制的,样品经偏光显微镜、X射线衍射仪分析,发现其具有热致性液晶性能.我们用DSC法对这些化合物在升温及降温过程中的相变温度、相变焓进行了测定,并计算得到了相变熵。对于样品在冷却过程中的过冷现象作了测定和探讨.此外,还就样品处理对实验结果的影响作了初步的探索。
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| 关 键 词： | 差示扫描量热 液晶 相变参数 2-(4-烷氧苯基)-6-取代苯并噻唑 |
THERMODYNAMIC STUDIES ON THE PHASE TRANSITIONS OF THE MESOGEN 2-(4-ALKOXYPHENYL)-6-SUBSTITUTED BENZOTHIAZOLES BY DIFFERENTIAL SCANNING CALORIMETRY |
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| Lu Zhenrong,Yang Li The Central Laboratory,Suzhou University,Suzhou.THERMODYNAMIC STUDIES ON THE PHASE TRANSITIONS OF THE MESOGEN 2-(4-ALKOXYPHENYL)-6-SUBSTITUTED BENZOTHIAZOLES BY DIFFERENTIAL SCANNING CALORIMETRY[J].Acta Physico-Chimica Sinica,1992(1). |
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| Authors: | Lu Zhenrong Yang Li The Central Laboratory Suzhou University Suzhou |
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| Institution: | Lu Zhenrong,Yang Li The Central Laboratory,Suzhou University,Suzhou 215006 |
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| Abstract: | The phase transitions of a new group of mesogens, 2-(4-alkoxyphenyl)-6-subs-tituted benzothiazoles were thermodynamically studied by DSC, and their transitiontemperatures and enthalpy changes were measured, from which the transition entropychanges were calculated. The results obtained were discussed. In addition, the phe-nomenon of super-cooling of the compounds were quantitatively observed. |
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| Keywords: | Differential Scanning Calorimetry Liquid crystal Phase transition parameters 2-(4-alkoxyphenyl)-6-substituted benzothiazoles |
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