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Effects and Role of the Solvents on the Plasma-Initiated Solution Polymerization of Vinyl Monomers

1983; Springer Nature; Volume: 15; Issue: 1 Linguagem: Inglês

10.1295/polymj.15.81

1349-0540

Yoshihito Osada, Mitsuo Takase, Yu Iriyama,

Synthesis and properties of polymers

Plasma-initiated solution polymerization of vinyl monomers was carried out in various solvents. It was found that the polymerization took place exceedingly rapidly in the presence of water. It was also found that radicals generated from the plasma were efficiently trapped by solvated 2,2-diphenyl-1-picrylhydrazyl (DPPH), and from the rate of consumption of DPPH, the rate of radical liberation in the plasma was calculated as about 1×10−5 moll−1 per 1 cm2 of the diffusion area. A mechanism for the initiation process was envisioned in terms of the interaction between active species diffused from the gaseous plasma and liquid monomers. The possibility of solvation of ionic active species is proposed.