8 Result(s)

Article

Synthesis of Star-shaped 8 arms Poly(ethylene glycol)-Poly(L-lactide) Block Copolymer and Physicochemical Properties of Its Solution Cast Film as Soft Biomaterial

Biodegradable star-shaped 8 arms PEG-b-PLLA block copolymer was synthesized to create a novel implantable soft material. The differences in physicochemical properties between star-shaped 8 arms PEG10K-b-PLLA35K f...

Koji Nagahama, Yuichi Ohya, Tatsuro Ouchi in Polymer Journal (2006)

Article

Vinyl Polymerization. CDVII. Polymerization of Methyl Methacrylate Initiated by Diphenyldisulfide and Cu(II) Ion

Radical polymerization of methyl methacrylate (MMA) initiated by diphenyldisulfide (DPDS) and CuCl₂ was carried out in a mixed solvent of 1,4-dioxane and water. The rate was expressed by the equation; R_p=k[DPDS]^0...

Tatsuro Ouchi, Nobuaki Beika, Minoru Imoto in Polymer Journal (1982)

Article

Vinyl Polymerization. CCCC. Radical Polymerization of Methyl Methacrylate Initiated with Micrococcus lysodeiplicus

The polymerization of methyl methacrylate with Micrococcus lysodeiplicus was carried out in water, and the reaction was found to proceed through a radical mechanism. The effects of the quantity of reagent on the ...

Minoru Imoto, Tatsuro Ouchi, Masaya Inaba, Tai Tokuyama, Hitoshi Obata… in Polymer Journal (1981)

Article

Vinyl Polymerization. CCCXCVII. On the Polymerization of Methyl Methacrylate Initiated with the System of Glutathione, Cu(II) Ion, Urea, and Water

The polymerization of methyl methacrylate (MMA) was carried out in a system of glutathione (oxidized type, GSSG), Cu(II) ion, urea, and water. GSSG having S–S bonds behaved as a lysozyme model. It was confirme...

Minoru Imoto, Tatsuro Ouchi, Nozomu Yoshioka in Polymer Journal (1981)

Article

Vinyl Polymerization. CCCXCVIII. Radical Polymerization of Methyl Methacrylate Initiated with the System of Poly(β-alanine) or α-Amylase and Cu(II) Ion in the Aqueous Solution of Urea

The polymerization of methyl methacrylate with poly(β-alanine) or α-amylase and Cu(II) ions was carried out at 85°C for 3 h in an aqueous solution of urea. The formation of hydrophobic areas by these macromole...

Tatsuro Ouchi, Akira Kuriyama, Minoru Imoto in Polymer Journal (1981)

Article

Vinyl Polymerization. CCCLXXXV. Polymerization of Methyl Methacrylate Initiated with Sodium Poly(L-glutamate) in Aqueous Medium of Cu(II) Ion

The polymerization of methyl methacrylate (MM A) by sodium poly(L-glutamate) (PLG-Na), copper(II) chloride and water was carried out. The effects of the pH of the aqueous solution and the mass of each component o...

Tatsuro Ouchi, Kiyotaka Watanabe, Toshiyuki Yoshikawa, Eijiro Morita… in Polymer Journal (1979)

Article

Vinyl Polymerization. CCCLXXVI. Polymerization of 2,2-Dimethyl-3-oxobutyl Methacrylate

2,2-Dimethyl-3-oxobutyl methacrylate (DMBM) was synthesized from 4-hydroxy-3,3-dimethyl-2-butanone and methacrylic acid. The polymerization of DMBM was carried out in benzene at 60°C, using 2,2′-azobisisobutyr...

Tatsuro Ouchi, Koji Yokobayashi, Yoshitaka Arita, Minoru Imoto in Polymer Journal (1979)

Article

Resins from Formaldehyde. CIV. Hydroxymethylation of Diisopropyl Ketone with Formaldehyde

Tatsuro Ouchi, Yoshitaka Arita, Minoru Imoto in Polymer Journal (1976)