Living Radical Polymerization (LRP) of Water-Soluble Monomers Mediated by Cobalt Catalyst in Aqueous Phase

• Main Authors: Tu, Tsung-Han, 杜宗翰
• Other Authors: Peng, Chi-How
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/46428647634699522197

碩士 === 國立清華大學 === 化學系 === 101 === Acrylic acid polymerization has been mediated by water soluble (salen*)CoII complexes. The living characters of linear increased molecular weight with conversion, relatively low polydispersity values, and the synthesis of block copolymer were approached. The kinetic study with different amount of azo-initiator indicated that the control process is mainly based on reversible termination pathway and the equilibrium constant was estimated as 2.4 x10-9. Functional monomer, “Di(pyridin-2-yl)methyl acrylate” (DPyMA), which can coordinate with metal ions, was synthesized successfully. Poly(DPyMA) and DPyMA coordinated copper complex were also obtained. However, the reaction of the CuBr2 and poly(DPyMA) led to the precipitation which was proposed as the crosslinked product of poly(DPyMA) and Cu ions. Living radical polymerization of DPyMA is still being processed.