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Synthesis and properties of ABA-type triblock copolymers of poly(glycolide-co-caprolactone) (A) and poly(ethylene glycol) (B)
Cai, Q; Bei, JZ; Wang, SG
2002-06-01
Source PublicationPOLYMER
ISSN0032-3861
Volume43Issue:13Pages:3585-3591
AbstractPoly(glycolide-co-caprolactone) (A)-poly(ethylene glycol) (B) ABA-type triblock copolymers (PGCE) were synthesized by bulk ring opening polymerization, using the hydroxyl endgroups of poly(ethylene glycol) (PEG) as initiator and stannous octoate as catalyst. The resulting copolymers were characterized by various analytical techniques. Gel permeation chromatographic analysis indicated that the polymerization product was free of residual monomers, PEG and oligomers. H-1 NMR and differential scanning calorimeter results demonstrated that the copolymers had a structure of poly(glycolide-co-caprolactone) (PGC) chains chemically attached to PEG segments. All the PGCE copolymers showed improved hydrophilicity in comparison with the corresponding PGC copolymers with the same molar ratio of glycolidyl and caproyl units. The microspheres of PGCE copolymer exhibited rough surfaces quite different from the smooth surface of PGC microspheres. This phenomenon was attentively ascribed to the highly swollen ability of PGCE copolymers and the freeze-drying process in the microspheres fabrication. (C) 2002 Elsevier Science Ltd. All rights reserved.
KeywordPoly(Glycolide-co-caprolactone) Poly(Ethylene Glycol) Block Copolymer
Indexed BySCI
Language英语
WOS IDWOS:000175738500001
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/79510
Collection中国科学院化学研究所
Corresponding AuthorWang, SG
Affiliation1.Chinese Acad Sci, PCLCC, Inst Chem, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Cai, Q,Bei, JZ,Wang, SG. Synthesis and properties of ABA-type triblock copolymers of poly(glycolide-co-caprolactone) (A) and poly(ethylene glycol) (B)[J]. POLYMER,2002,43(13):3585-3591.
APA Cai, Q,Bei, JZ,&Wang, SG.(2002).Synthesis and properties of ABA-type triblock copolymers of poly(glycolide-co-caprolactone) (A) and poly(ethylene glycol) (B).POLYMER,43(13),3585-3591.
MLA Cai, Q,et al."Synthesis and properties of ABA-type triblock copolymers of poly(glycolide-co-caprolactone) (A) and poly(ethylene glycol) (B)".POLYMER 43.13(2002):3585-3591.
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