高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (9): 1721.

• 研究快报 • 上一篇    下一篇

聚乙二醇对苯二甲酸酯-b-聚对苯二甲酸丁二醇酯多嵌段共聚物内部贯通多孔支架的制备方法

张爱英, 冯增国, 张勇, 王连才, 邱荣鑫   

  1. 北京理工大学材料科学与工程学院, 北京 100081
  • 收稿日期:2003-04-23 出版日期:2003-09-24 发布日期:2003-09-24
  • 通讯作者: 冯增国(1957年出生),男,研究员,博士生导师,从事生物材料研究.E-mail:sainfeng@bit.edu.cn E-mail:sainfeng@bit.edu.cn
  • 基金资助:

    国家“八六三”计划项目(批准号:2001AA216077)资助

A Novel Preparation of Highly Interconnected Macroporous Poly(ethylene glycol) terephthalate-b-poly(butylene terephthalate) Copolymer Scaffolds

ZHANG Ai-Ying, FENG Zeng-Guo, ZHANG Yong, WANG Lian-Cai, QIU Rong-Xin   

  1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
  • Received:2003-04-23 Online:2003-09-24 Published:2003-09-24

摘要: 以天然或合成的可生物降解材料制备细胞外基质支架是组织工程所涉及到的关键问题之一.常用的制备方法由于涉及到有机溶剂的使用、较高的加工温度以及致孔剂的残余问题,对于活性物质的引入均带来不利影响,相关的改进工作(如不使用有机溶剂和消除残余致孔剂等)尽管也获得了具有良好孔结构的支架,但却使制备过程更趋复杂.

关键词: 聚乙二醇对苯二甲酸酯-b-聚对苯二甲酸丁二醇酯多嵌段共聚物, 多孔支架, 内部贯通, 水解

Abstract: Based on poly(ethylene glycol) terephthalate-b-poly(butylene terephthalate) multiblock copoly-mers, highly interconnected macroporous scaffolds are fabricated via hydrolysis in PBS. The scaffold morphologies are closely related to polymer composition and aging time. The copolymers with molar ratios of PEGT to PBT 31 : 69 and 22 : 78 have exhibited highly interconnected macroporous structures after more than 100d degradation. Pore diameters could be controlled within the range of 2-50μm by varying the aging time, and the porosity of scaffold treated for 100 d is about 88% for the copolymer with PEGT molar fraction of 31%. However, those copolymers with PEGT molar fraction of 17% and 44% could not form porous matrices. Therefore, the content of hard domains as physical cross-linking junctions in the matrix is of critical importance for the preparation of scaffold.

Key words: Poly (ethylene glycol) terephthalate-b-poly(butylene terephthalate) (PEGT-b-PBT) copoly-mer, Macroporous scaffold, Interconnected structure, Hydrolysis

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