Synthesis and characterization of star-shaped poly (L-lactide)s initiated with hydroxyl-terminated poly(amidoamine) (PAMAM-OH) dendrimers

doi:10.1021/cm0210694

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	Synthesis and characterization of star-shaped poly (L-lactide)s initiated with hydroxyl-terminated poly(amidoamine) (PAMAM-OH) dendrimers
	Zhao, YL; Shuai, XT; Chen, CF; Xi, F
刊名	CHEMISTRY OF MATERIALS
	2003-07-15
卷号	15 期号:14 页码:2836-2843
ISSN号	0897-4756
DOI	10.1021/cm0210694
英文摘要	Novel biodegradable star-shaped polymers that consist of poly(L-lactide) (PLLA) arms and a starburst PAMAM dendrimer core were prepared by ring-opening polymerization of L-lactide with PAMAM-OH dendrimer (generation 1-4) initiators and a stannous octoate catalyst in bulk at 130 degreesC. The molecular weights of the star-shaped polymers were measured by GPC, H-1 NMR, and SLS. It was found that the molecular weight of the synthesized star-shaped polylactides can be controlled by variation of the generation of the dendrimer initiators and the molar ratio of monomer to initiator. Effects of molecular weight and number of arms on the thermal properties and hydrolytic degradation of the star-shaped polylactides were investigated. For polylactides initiated with the same dendrimer initiator, the melting temperature and crystallinity increased with increasing molecular weight. For star-shaped polylactides initiated with dendrimer initiators with different generations, the melting point, crystallinity, crystallization rate, and maximum decomposition temperature decreased as the number of arms increased, while the corresponding hydrolysis rate increased.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000184087000027
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/80955]
专题	中国科学院化学研究所
通讯作者	Xi, F
作者单位	Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Ctr Mol Sci, Inst Chem, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Zhao, YL,Shuai, XT,Chen, CF,et al. Synthesis and characterization of star-shaped poly (L-lactide)s initiated with hydroxyl-terminated poly(amidoamine) (PAMAM-OH) dendrimers[J]. CHEMISTRY OF MATERIALS,2003,15(14):2836-2843.
APA	Zhao, YL,Shuai, XT,Chen, CF,&Xi, F.(2003).Synthesis and characterization of star-shaped poly (L-lactide)s initiated with hydroxyl-terminated poly(amidoamine) (PAMAM-OH) dendrimers.CHEMISTRY OF MATERIALS,15(14),2836-2843.
MLA	Zhao, YL,et al."Synthesis and characterization of star-shaped poly (L-lactide)s initiated with hydroxyl-terminated poly(amidoamine) (PAMAM-OH) dendrimers".CHEMISTRY OF MATERIALS 15.14(2003):2836-2843.