The Effect of Living Polystyrene as Costabilizers on Ostwald Ripening and Miniemulsion Polymerization

• Main Authors: Yi-Wei Chang, 張怡偉
• Other Authors: Chorng-Shyan Chern
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/47464686016583404890

碩士 === 國立臺灣科技大學 === 化學工程系 === 103 === The object of this study are use Living Polystyrene as a costabilizer and SDS as a surfactant on styrene miniemulsion system at 25℃ by varies the volume fraction and molecular weight of costabilizer to probe Ostwald ripening effect. Moreover, Ostwald ripening behavior by using polymeric as a costabilizer have been investigate and develop by Chern. The Kabal’nov equation has been modified to describe regarding the Ostward ripening rate have decrease against with increasing the polymeric costabilizer. Thus the thermodynamic parameter as the Flory-Huhhins interaction paramerter (Χ_(m,p)) was investigated by using the modification of Kabal’nov equation in this miniemulsion system either. In this study, the minemulsion polymerization technique prepare by Styrene/ Living Polystyrene latexes. The nucleation mechanism and kinetics in the miniemulsion system were investigated by changing different initiators (SPS、AIBN) and molecular weight (Mn) of costabilizer.