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Stereoselective ring-opening polymerization of rac-lactide by bulky chiral and achiral N-heterocyclic carbenes
Li, Hui; Ai, Bai-Ru; Hong, Miao
2018
发表期刊CHINESE JOURNAL OF POLYMER SCIENCE
卷号36期号:2页码:231-236
摘要Despite the extraordinary success has been achieved in metal catalyst-promoted stereoselective ring-opening polymerization (ROP) of rac-lactide (rac-LA), well-controlled stereoselective rac-LA ROP by organic catalyst still remains a scientific challenge. Here we report our investigations into organocatalytic stereoselective ROP of rac-LA by utilizing novel bulky chiral and achiral N-heterocyclic carbenes (NHC), 1,3-bis-(1'-naphthylethyl)imidazolin-2-ylidene. The effect of polymerization conditions (e.g. solvent, temperature, alcohol initiator) on ROP behavior by these bulky NHCs has been fully studied, leading to the formation of isotactic-rich stereoblock polylactide (P (i) = 0.81) under optimized conditions with high activity (Conv. = 98% in 30 min) and narrow molecular weight dispersity (AEe = 1.05).
关键词Metal-complexes Cyclic Esters Meso-lactide Kinetic Resolution Poly(Lactic Acid) Racemic Lactide Catalysts Organocatalysts Opportunities Ligands
学科领域Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/16841
专题2018专题
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Li, Hui,Ai, Bai-Ru,Hong, Miao. Stereoselective ring-opening polymerization of rac-lactide by bulky chiral and achiral N-heterocyclic carbenes[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2018,36(2):231-236.
APA Li, Hui,Ai, Bai-Ru,&Hong, Miao.(2018).Stereoselective ring-opening polymerization of rac-lactide by bulky chiral and achiral N-heterocyclic carbenes.CHINESE JOURNAL OF POLYMER SCIENCE,36(2),231-236.
MLA Li, Hui,et al."Stereoselective ring-opening polymerization of rac-lactide by bulky chiral and achiral N-heterocyclic carbenes".CHINESE JOURNAL OF POLYMER SCIENCE 36.2(2018):231-236.
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