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	Synthesis, characterization, and in vitro degradation of star-shaped P(epsilon-caprolactone)-b-poly(L-lactide)-b-poly(D,L-lactide-co-glycolide) from hexakis [p-(hydroxymethyl)phenoxy]cyclotriphosphazene initiator
	Yuan, Weizhong ; Yuan, Jinying ; Huang, Xiaobin ; Tang, Xiaozhen
	2010-05-06 ; 2010-05-06
关键词	phosphazene ring-opening polymerization star-shaped block copolymers in vitro degradation ALT-GLYCOLIC ACID) HYDROXYL-TERMINATED CYCLOTRIPHOSPHAZENE LIVING RADICAL POLYMERIZATION STANNOUS OCTOATE CATALYST EPSILON-CAPROLACTONE BLOCK-COPOLYMERS MULTIFUNCTIONAL INITIATORS CRYSTALLIZATION BEHAVIOR THERMAL-PROPERTIES SIDE-GROUPS Polymer Science
中文摘要	Hexaarmed star-shaped hydroxyl-terminated poly(epsilon-caprolactone) (PCL) was successfully synthesized via the ring-opening polymerization of E-caprolactone (CL) with hexakis[p-(hydroxymethyl)phenoxy]cyclotriphosphazene initiator and stannous octoate catalyst in bulk. The star-shaped PCL with hydroxy end groups could be used as a macroinitiator for block copolymerization with L-lactide (L-LA). The star-shaped triblock copolymer was synthesized by above-mentioned hydroxyl-terminated star-shaped diblock PCL-b-PLLA, D,L-lactide (D,L-LA), and glycolide (GA). IR, H-1 NMR, and GPC analysis showed that the star-shaped block copolymers were successfully synthesized and the molecular weights and the unit composition of the star-shaped block copolymers were controlled by the molar ratios of monomer to initiator. The triblock copolymer presented a three-phase structure, namely, PCL crystalline, PLLA crystalline, and D,L-PLAGA amorphous domains, which made the triblock copolymer different from the diblock copolymer and star-shaped PCL in crystallizability and thermal behaviors. Then, the in vitro degradation behaviors of the copolymers were investigated. (c) 2007 Wiley Periodicals, Inc.
语种	英语 ; 英语
出版者	JOHN WILEY & SONS INC ; HOBOKEN ; 111 RIVER ST, HOBOKEN, NJ 07030 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/12509]
专题	清华大学
推荐引用方式 GB/T 7714	Yuan, Weizhong,Yuan, Jinying,Huang, Xiaobin,et al. Synthesis, characterization, and in vitro degradation of star-shaped P(epsilon-caprolactone)-b-poly(L-lactide)-b-poly(D,L-lactide-co-glycolide) from hexakis [p-(hydroxymethyl)phenoxy]cyclotriphosphazene initiator[J],2010, 2010.
APA	Yuan, Weizhong,Yuan, Jinying,Huang, Xiaobin,&Tang, Xiaozhen.(2010).Synthesis, characterization, and in vitro degradation of star-shaped P(epsilon-caprolactone)-b-poly(L-lactide)-b-poly(D,L-lactide-co-glycolide) from hexakis [p-(hydroxymethyl)phenoxy]cyclotriphosphazene initiator..
MLA	Yuan, Weizhong,et al."Synthesis, characterization, and in vitro degradation of star-shaped P(epsilon-caprolactone)-b-poly(L-lactide)-b-poly(D,L-lactide-co-glycolide) from hexakis [p-(hydroxymethyl)phenoxy]cyclotriphosphazene initiator".(2010).

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