| POLYMERIZATION OF γ-STEARYL-α,l-GLUTAMATE N-CARBOXYANHYDRIDE USING RARE EARTH COORDINATION CATALYSTS* |
| |
| 作者姓名： | Xiao-ping Hu Jian Wu Zhi-kang Xu Lin-xian Feng Institute of Polymer Science Zhejiang University Hangzhou China |
| |
| 作者单位： | Xiao-ping Hu;Jian Wu;Zhi-kang Xu;Lin-xian Feng Institute of Polymer Science,Zhejiang University,Hangzhou 310027,China Department of Chemistry,Zhejiang University,Hangzhou 310027,China |
| |
| 基金项目： | This work was supported by National Natural Science Foundation of China (No. 29504029). |
| |
| 摘 要： | A rare earth coordination system was first investigated as a new type of catalyst for the ring-openingpolymerization of α-amino acid N-carboxyanhydrides (NCAs). The results for the polymerization of γ-stearyl-α,L-glutamate(SLG) NCA using neodymium acetylacetonate (Nd(acac)_3)- or neodymium tris(2-ethylhexylphosphonate) (Nd(P_(204))_3)-triethylaluminum-water as catalysts were compared with those using conventional catalysts. It was found that the helicalpoly(γ-stearyl-L-glutamate) with high molecular weight as well as narrow molecular weight distribution can be obtained inthe presence of Nd(acac)_3/AlEt_3-1/2H_2O. The polymer obtained was characterized by IR and NMR spectroscopy.
|
| 关 键 词： | Rare earth coordination catalyst Ring-opening polymerization Polypeptide Poly(γ-stearyl-α L-glutamate) |
| 收稿时间： | 1999-10-26 |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《高分子科学》浏览原始摘要信息 |
| 点击此处可从《高分子科学》下载免费的PDF全文 |
