The Physical and Dyeing Properties of Polypropylene Modified with Polyester and Nano Silica Dioxide

• Main Authors: Chun-wei Li, 李俊緯
• Other Authors: Huei-Hsiung Wang
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/12455664746790001331

碩士 === 逢甲大學 === 紡織工程所 === 97 === The purpose of this study is to improve the dyeability of the polypropylene fiber. Polypropylene and polyester were mixed at difference weight ratios by melt spinning into fiber, and the PP-g-MA was added as the compatibilizer, it imporved the compatibility to PP/PET. The addition of nano-SiO2 in spinning process formed a PP/PET/SiO2 composite fiber. The parameter of operating in the experiment is: the temperature of spinning 280℃, and rotational speed of 18 rpm. The dyeing property of PP/PET and PP/PET/SiO2 was discussed. The modified polypropylene was observed from its surface morphology and physical property using Fourier Transform Infrared Spectrometer (FTIR), Dynamic Mechanical Analyzer (DMA), Thermogravimetric Analysis (TGA), Differential Scanning Calorimetre (DSC), Scanning Electron Microscope (SEM), mechanical testing and dyeing property etc. In consideration of FTIR, PPgMA would react with PET theoretically, but there is only a small portion, it looked like a physical blending. From DMA, the compatibility of blends was good. From TGA, the initial decomposition temperature increased as PET increased. From DSC, as PET content increased, the melting temperaturethe of PP/PET blends was not effect. From SEM, as PET content increased, the PET domain was added, and SiO2 was dispersed in blends. From tensile test, the mechanical property of blends was decreased as both the content of SiO2 and PET increased. For dyeing property, the dyeability (K/S) of PP with PET and SiO2 was enhanced. The colorfastness of blends was in level of 4.