| Synthesis and Characterization of ABBA Block Copolymer of Glycolide and ε-Caprolactone |
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| 作者姓名： | CHENLi CHENXue-si DENGMing-xiao JINGXia-bin |
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| 作者单位： | [1]StateKeyLaboratoryofPolymerPhysicsandChemistry,UhangchunInstituteofAppliedChemistry,ChineseAcademyofSciences,Changchun130022,P.R.China [2]StateKeyLaboratoryofPolymerPhysicsandChemistry,UhangchunInstituteofAppliedChemistry,ChineseAcademyofSciences,Changchun130022,P.R.China／／FacultyofChemistry,NortheastNormalUniversity |
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| 基金项目： | SupportedbytheNationalNaturalScienceFoundationofChina(No.50273038)andNationalFundforDistinguishedYoungScholar(No.50425309). |
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| 摘 要： | A biodegradable ABBA block copolymer was synthesized via the ring-opening co-polymerization of ε-Scaprolactone (CL, B) and glycolide (A) by means of step polymerization in the presence of ethylene glycol as an initiator and stannous octanoate as a catalyst at 110 ℃ for 48 h. The molecular length of the PCL prepolymer(BB) could be adjusted by controlling the molar ratio of the ethylene glycol initiator to ε-caprolactone monomer. The structure and the composition of the block copolymer were determined by the weight ratio of the monomer glycolide (A) to PCL pre-polymer(BB). The block copolymers were characterized by ^1H NMR, GPC, DSC and X-ray. The results confirm the successful synthesis of an ABBA block copolymer.
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| 关 键 词： | 合成方法 ABBA 共聚物 开环聚合反应 生物材料 乙交酯 ε-已内酯 |
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