Synthesis and characterization of biodegradable polylactides and polylactide-block-poly(Z-lysine) copolymers

Autor:	Hui-Ju Chuang, Chen-Yuan Kuo, Chu-Chieh Lin, Yong Huang, Ya-Liu Peng
Rok vydání:	2010
Předmět:	Telechelic polymer Lactide Materials science Polymers and Plastics Organic Chemistry Dispersity Solution polymerization Ring-opening polymerization chemistry.chemical_compound chemistry Polymerization Polymer chemistry Materials Chemistry Copolymer Tetrahydrofuran
Zdroj:	Polymer. 51:4329-4335
ISSN:	0032-3861
Popis:	The reaction of (R,R)-trans-1,2-bis(2,4,6-triisopropylbenzenesulfonamidato)cyclohexane (RRTBSC-H2, 1) with MN[Si(CH3)3] in tetrahydrofuran (THF) produces [(RRTBSC)2M4(THF)4] (2: M = Li, 3: M = Na, 4: M = K). Experimental results show that all three complexes 2–4 are active toward the ring-opening polymerization of l -lactide and compound 2 efficiently catalyzes the polymerization of l -lactide in the presence of a variety of alcohols in a controlled fashion with very narrow polydispersity index. In addition, a variety of biodegradable poly( l -lactide)-block-poly(Nξ-carbobenzyloxy- l -lysine) block copolymers with different ratios have also been synthesized using poly( l -lactide) containing amino chain end (PLLA-NH2) as a macroinitiator.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e22a4c3afd14187d077b379dd66117f7 https://doi.org/10.1016/j.polymer.2010.07.016 Zobrazit plný text záznamu Full Text from ScienceDirect