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|Title:||Estimation of surface tensions of thermotropic liquid crystalline polymers (Vectra A950, B950 & Xydar)|
|Authors:||Ma, Kui Xiang|
|Source:||Ma, Kui Xiang,Chung, Tai-Shung (1998). Estimation of surface tensions of thermotropic liquid crystalline polymers (Vectra A950, B950 & Xydar). Annual Technical Conference - ANTEC, Conference Proceedings 2 : 1583-1585. ScholarBank@NUS Repository.|
|Abstract:||We have determined the surface tensions (γs) two liquid crystalline polyesters (VectraTM A-950 and XydarTM) and one polyesteramide (VectraTM B-950) using contact angle techniques at room temperature. These LCPs were dissolved in mixtures of 3,5-bis-trifluoromethyl phenol and spin-coated upon glass slides to form thin films. The contact angle measurements were carried out employing a Rame-Hart contact angle goniometer. The average surface tensions of VectraTM A-950, VectraTM B-950 and XydarTM are 41.04, 41.94 and 42.27 mJ/cm2, respectively. In addition, all these three LCPs should be classed as monopolar Lewis bases because their Lewis acid components, γ+, are neglectable. The intensity of Lewis base for these LCPs are as follows: XydarTM>VectraTM B-950>VectraTM A-950.|
|Source Title:||Annual Technical Conference - ANTEC, Conference Proceedings|
|Appears in Collections:||Staff Publications|
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