Polymerization of Vinyl Monomer Initiated by the Complex of "Diaminocellulose" and Metal lonst

Abstract

The polymerizations of methyl methacrylate (MMA), styrene, and acrylamide were carried out in the presence of CC!, and water, by using the complex DAC-Cu(II) or DAC-Fe(III)perpared from “diaminocellulose” (DAC) and Cu(NO₃₂) or Fe(NO₃)₃, respectively. It was found that the polymerization was especially rapid in the present polymerization system of MMA(6 ml) by using the complex DAC-Cu (II) 50 mg which contained 0.05 mmol of Cu (10) in the presence of 29 ml of water and 1 ml of CCl₄, and the more the amounts of chelating Cu(II) ion and NH₂ group in the complex, the higher became the catalytic activity of this complex. As a result of a Kinetic study of the polymerization, the following rate equation of polymerization was obtained.
R_p=const. [DAC-Cu(II)]^0.5·[MMA]^1.0
In addition, the apparent overall activation energy of the present polymerization system 0.5was estimated to be 11.7 kcal/mol.