Synthesis of Functional Particles by Stable Free-radical Polymerization

• Main Authors: Ming-Ui Wu, 吳明諭
• Other Authors: Kuo-Chung, Cheng
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/2g48tb

碩士 === 國立臺北科技大學 === 化學工程所 === 94 === Polychloromethylstyrene, PCMS, macro-initiators were synthesized by a stable free radical polymerizations in the presence of 2,2’,6,6’-teramethyl-1-piperidinyloxy (TEMPO) and benzoyl peroxide initiator; then the TEMPO-capped PCMS were extended by polymerization with styrene monomers to synthesize PCMS-b-PS block copolymers. The homopolymers, PCMS, or the PCMS-b-PS block copolymers were further modified by nicotinamide; then oxidoreduction-sensitive particles were formed. It was found that the particles formed by either homopolymers or block copolymers could be dispersed well in the oxidized state, but were precipitated in the reduced state; then could be reversibly dispersed by adding oxidant, H2O2. The particles formed by the block copolymers showed a more sensitive response than that formed by the homopolymers.