Abstract
In this study, the bulk polymerizations of L-lactide were carried out with triethylaluminium (TEAL), which was supported inside of the nanopore of silica. The feed amount of TEAL in the feed, the immobilization time and temperature were changed to observe the effect of immobilization condition on the polymerization performance with the silica- supported TEAL. As the feed amount of TEAL increased, the conversion of polymerization increased. The highest molecular weight (MW) was achieved at 8 mmol/g-silica of TEAL. Hexane and toluene as solvents were employed to investigate the effect of temperature on the immobilization. Hexane showed better efficiency of immobilization TEAL and the immobilization temperature at showed the highest conversion and MW.
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