The Effect of Titanium Dioxide on Crystallization and Thermal Degradation Behaviors of Polyester

• Main Authors: Hung-Lung Chen, 陳宏隆
• Other Authors: Shyr-Tien-Wei
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/42733502869809783496

碩士 === 逢甲大學 === 紡織工程所 === 92 === ABSTRACT The aim of this study was focused on crystallization, melting, and degradation behavior of diverse TiO2 /polyester ( PET, PTT, and PBT). In order to studied TiO2 affect crystallization and degradation behavior of polyester. The influence of non-isothermal crystallization and melting behavior of diverse TiO2 /polyester were discussed with a differential scanning calorimertre. Avrami exponent, crystallization rate constant, and crystallization half-time were calculated. Degradation behavior was studied with a thermogravimetric analyzer and the degradation activation energy was calculated by the Doyle-Ozawa integral method. The crystallization structure was studied with a wide angle X-ray diffractometer. Crystallization morphology was observed with a hot stage polarizing microscope, and a scanning electron microscope. Results showed that the effects of different size of TiO2 on crystallization, melting and thermal degradation behaviors of polyester were not discriminating. Avrami exponents were indicated that all of sample showed three-dimension crystalline structure. Crystallization rate constant and crystallization halt-time were indicated that crystallization rate of polyester wasn’t increasing evidently. WAXS curves of polyester had no significant changed.