Ring-opening polymerization ofl-lactide with silica supported titanium alkoxide catalysts
โ Scribed by Eonah Kim; Eun Woo Shin; Ik-Keun Yoo; Jin Suk Chung; Younjin Hong; Youngjo Kim
- Publisher
- The Polymer Society of Korea
- Year
- 2009
- Tongue
- English
- Weight
- 369 KB
- Volume
- 17
- Category
- Article
- ISSN
- 1598-5032
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๐ SIMILAR VOLUMES
Six different titanium biphenolate complexes were synthesized and investigated as initiators for the ring opening polymerization of l-lactide in the bulk phase but typically below the degradation temperature of the monomer. All the titanium complexes are effective in forming polylactide with good co
## Abstract After modification of silica with benzoyl chloride (BC) to obtain BCโmodified SiO~2~ (BCโSiO~2~), BCโSiO~2~/TiCl~4~ and BCโSiO~2~/BEM/TiCl~4~ catalysts were prepared by treating the BCโSiO~2~ with TiCl~4~ directly or with butylethylmagnesium (BEM) followed by TiCl~4~, respectively. Duri
## Abstract **Summary:** The Ti^III^Cp~2~Clโcatalyzed radical ring opening of epoxides produces Ti alkoxides which initiate the ringโopening polymerization of __ฮต__โcaprolactone. A linear dependence of $\overline M \_{\rm n}$ on conversion, linear kinetics, low $\overline M \_{\rm w} /\overline M \