Visble Light Photopolymerization of Methylmethacrylate Initiated By Titanocene.

Abstract

The photopolymerization system was composed of bis(rl-5-cyclopentadienyl)-bis[2,6-difluoro-3-(1-H-pyrrolyl)phenyl]titanium (Titanocene) and Methylmethacrylate (MMA).The relationship between the photopolymerization rate and the concentration of Titanocene and MMA was studied in trichloromethane solution at 30 °C by using dilatometer. Also, the preliminary research and discussion on the mechanism of photopolymerization initiated by Titanocene in the visible light were completed.

Bioprocess Development for 2,3‐Butanediol Production by Paenibacillus Strains

“…An increase in the production from 8.74 to 18.8 g L −1 , in the yield from 0.18 to 0.31 g g −1 , and in the productivity from 0.52 to 1.13 g L −1 h −1 was observed when using the continuous system with cell recycling 63. Raw inulin extract from Jerusalem artichoke tubers, without previous hydrolysis, was used for 2,3‐BDO production by P. polymyxa ZJ‐9 resulting in 36.9 g L −1 levo ‐2,3‐BDO with more than 98 % optical purity 64.…”