| 論文名 |
Lipase-catalyzed synthesis and characterization of polymers by cyclodextrin as support architecture. |
| 著者 |
Wenhui Liu
Fang Wang
Tianwei Tan
Biqiang Chen
|
| キーワード |
|
| 出版年月 |
1970年1月 |
| 発表先 |
Carbohydr Polym. 2013 Jan 30;92(1):633-40. |
| WEBサイト |
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| 論文概要（和文） |
サポート構造としてのシクロデキストリンによるポリマーのリパーゼ触媒合成と特性化。 |
| 論文概要（英文） |
Diesters and diols were successfully converted into aliphatic polyesters by enzymatic lipase Candida sp.99-125 catalysis, with β-cyclodextrin acting as supporting architecture (in a similar way as chaperone proteins). No organic solvents were used. The polytransesterification was a much greener process, being solvent-free and without metal residues. Lipase Candida sp.99-125 showed a high catalytic activity for bulkpolymerization of diesters and diols with various numbers of methylene groups in their chains. β-Cyclodextrin encircled the linear polymer chain and maintained the chain in a proper configuration to avoid its coagulation. Lipase initiated the polymerization and β-cyclodextrin threaded onto the polymer chain to control the structure for producing high molecular weight polyesters. From a combination of diesters and diols, polyesters with a high molecular weight of 62,100 Da were obtained at 70 °C. The corresponding polyesters showed an excellent thermal stability till 350 °C and had a strong ability to crystallize with up to 72% crystallinity, contributing to their high storage modulus. |
