THE EFFECT OF SUBSTITUENT ON THE THERMAL PROPERTIES OF POLYESTERS CONSISTING OF AROMATIC TYPE SCHIFF BASE MESOGENIC UNITS AND POLYMETHYLENE SPACERS

Amar H.Al-Dujaili; Iman F.Mustafa; Amir T.Atto

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THE EFFECT OF SUBSTITUENT ON THE THERMAL PROPERTIES OF POLYESTERS CONSISTING OF AROMATIC TYPE SCHIFF BASE MESOGENIC UNITS AND POLYMETHYLENE SPACERS

Papers | Updated：2021-06-21

- THE EFFECT OF SUBSTITUENT ON THE THERMAL PROPERTIES OF POLYESTERS CONSISTING OF AROMATIC TYPE SCHIFF BASE MESOGENIC UNITS AND POLYMETHYLENE SPACERS
- Vol. 13, Issue 1, Pages: 51-58(1995)
- Affiliations：
  
  1.   Department of Chemistry
  2.   College of Education
  3.   Ibn Al-Hytham
  4.   University of Baghdad
  5.   P. O. Box 7358
  6.   Iraq
  7.   College of Sciences
  8.   University of Sadaam
- Author bio：
- Funds：
- DOI：
  CLC： TQ317
- Published：20 March 1995
- Accepted：
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[1]Amar H.Al-Dujaili,Iman F.Mustafa,Amir T.Atto.THE EFFECT OF SUBSTITUENT ON THE THERMAL PROPERTIES OF POLYESTERS CONSISTING OF AROMATIC TYPE SCHIFF BASE MESOGENIC UNITS AND POLYMETHYLENE SPACERS[J].Chinese Journal of Polymer Science,1995,{4}(01):51-58.

Amar H.Al-Dujaili, Iman F.Mustafa, Amir T.Atto. THE EFFECT OF SUBSTITUENT ON THE THERMAL PROPERTIES OF POLYESTERS CONSISTING OF AROMATIC TYPE SCHIFF BASE MESOGENIC UNITS AND POLYMETHYLENE SPACERS[J]. 1995, 13(1): 51-58.
[1]Amar H.Al-Dujaili,Iman F.Mustafa,Amir T.Atto.THE EFFECT OF SUBSTITUENT ON THE THERMAL PROPERTIES OF POLYESTERS CONSISTING OF AROMATIC TYPE SCHIFF BASE MESOGENIC UNITS AND POLYMETHYLENE SPACERS[J].Chinese Journal of Polymer Science,1995,{4}(01):51-58. DOI：

Amar H.Al-Dujaili, Iman F.Mustafa, Amir T.Atto. THE EFFECT OF SUBSTITUENT ON THE THERMAL PROPERTIES OF POLYESTERS CONSISTING OF AROMATIC TYPE SCHIFF BASE MESOGENIC UNITS AND POLYMETHYLENE SPACERS[J]. 1995, 13(1): 51-58. DOI：

摘要

<正> Polyesters consisting of substituted aromatic type Schiff base mesogenic unit andpolymethylene spacers were synthesized and their thermal transitions and liquid crystallineproperties were studied. The liquid crystalline behaviour has been characterized by differentialscanning calorimetry （DSC） and optical polarizing microscopy. Structural broadening bysubstitution of methoxy group in 2

2" positions of the mesogenic core produce polymers withlower transition temperatures. Polymers synthesized from ortho and meta substituted phenylenediamine did not form a liquid crystal phase.

Abstract

Polyesters consisting of substituted aromatic type Schiff base mesogenic unit andpolymethylene spacers were synthesized and their thermal transitions and liquid crystallineproperties were studied. The liquid crystalline behaviour has been characterized by differentialscanning calorimetry （DSC） and optical polarizing microscopy. Structural broadening bysubstitution of methoxy group in 2

2" positions of the mesogenic core produce polymers withlower transition temperatures. Polymers synthesized from ortho and meta substituted phenylenediamine did not form a liquid crystal phase.

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