http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Yeap-Hung Ng,Fabio di Lena,Christina L. L. Chai 한국고분자학회 2012 Macromolecular Research Vol.20 No.6
Iron(II) chloride in combination with various polyethers form the homogeneous, “green” catalytic mixtures that are capable of promoting the well-controlled atom transfer radical polymerization of methyl methacrylate in the absence of any additional ligands or solvents. With poly(ethylene glycol)s, linear semilogarithmic plots of conversion vs. time and of molecular weight vs. monomer conversion were obtained with polydispersities as low as 1.32. The effects of the polyether structure, molecular weight, and chain-end functionality on the polymerization kinetics were also investigated.
On the Use of Cob(II)alamin as a Spin Trap in Radical Polymerization
Yeap-Hung Ng,Fabio di Lena,Christina L. L. Chai 한국고분자학회 2012 Macromolecular Research Vol.20 No.5
Hydroxocobalamin reduced with ascorbic acid acts as a spin trap for free radical polymerization in water. The reaction mechanism is dependent on monomer type. An acrylic olefin such as 2-hydroxyethyl acrylate (HEA)is polymerized at pH 7 and in the presence of a conventional radical source mainly through reversible deactivation by a coupling mechanism. In contrast, a methacrylate like polyethylene glycol methacrylate undergoes catalytic chain transfer oligomerization.