Phase Behavior and Structural Change in Nematic Liquid Crystal and

• Main Authors: Hsu, Ching-Fu, 許景福
• Other Authors: Hong, Po-Da
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/39431831231607078369

碩士 === 國立臺灣科技大學 === 高分子工程系 === 91 === In this study, thermodynamic phase equilibria of N-(4-Ethoxybenzylidene)-4’- butylaniline/ Poly(ε-caprolactone) (EBBA/PCL) blends have been investigated theoretically and experimentally. The phase transition of EBBA/PCL were calculated by taking into consideration the Flory-Huggins theory for the free energy of mixing of isotropic phases in conjunction with the Maier-Saupe theory for phase transition of nematic liquid crystal. Crystallization behavior and morphology map in miscible blends of EBBA/PCL have been investigated on the basis of optical microscopy. Local segregation effects at the growth front of spherulite and nonlinear growth of spherulite have been found during crystallization in EBBA/PCL (4/6). We also discuss the relation between our results on spherulites growth and current theories on nonlinear growth.