高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (11): 2196.

• 研究论文 • 上一篇    下一篇

白蛋白原位复合生物医用功能材料的研究(Ⅰ)──材料的合成和表面结构研究

计剑, 封麟先, 沈家骢   

  1. 浙江大学高分子科学与工程学系, 杭州310027
  • 收稿日期:2001-08-21 出版日期:2002-11-24 发布日期:2002-11-24
  • 通讯作者: 计 剑(1969年出生),男,博士,副教授,主要从事生物医用高分子、血液相容性材料、介入医用材料和组织工程材料的研究.E-mail:jianji@mail.hz.zj.cn E-mail:jianji@mail.hz.zj.cn
  • 基金资助:

    国家自然科学基金(批准号:29804009)资助

In-situ Albumin Binding Material for Biomedical Application(Ⅰ)──Molecular Design and Surface Characterization

JI Jian, FENG Lin-Xian, SHEN Jia-Cong   

  1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:2001-08-21 Online:2002-11-24 Published:2002-11-24

摘要: 采用大分子单体技术合成了以聚甲基丙烯酸甲酯为主链,聚氧乙烯链为侧链,末端为白蛋白诱导吸附基团的十八烷基功能聚合物聚甲基丙烯酸甲酯接枝十八烷基聚氧乙烯.采用变角X光电子能谱和表面接触角研究了该功能聚合物在空气和水界面的性质.结果表明,在聚合物-空气界面,十八烷基聚氧乙烯(SPEO)的表面含量随表面层厚度的降低而升高,并在表面发生高度富集.在聚合物-水界面,聚合物表面重组行为较弱,形成了高SPEO含量的疏水表面,该SPEO尾形结构表面预期可发挥聚氧乙烯和十八烷基的协同作用,形成白蛋白原位复合的生物医用功能材料.

关键词: 血液相容性, 两亲接枝共聚物, 大单体技术, 表面性质

Abstract: Poly(methyl methacrylate)-graft-[ω-stearyl-poly(ethylene oxide)] (PMMA-g-SPEO) and poly(methyl methacrylate)-graft-[ω-ethyl-poly(ethylene oxide)](PMMA-g-EPEO) were synthesized by free radical copolymerization of methyl methacrylate monomer with α-methacryloyl-ω-stearyl poly(ethylene oxide) macromonomer or α-methacryloyl-ω-ethyl poly(ethylene oxide) macromonomer. X-ray photoelectron spectroscopy(XPS) analysis indicates the substantial surface enrichment of the stearyl poly(ethylene oxide)(SPEO). In an aqueous environment, the surface rearrangement is limited, as proved by dynamic contact angle tests. The comb-like copolymer presents a special hydrophobic surface with a high SPEO surface density, which may be due to the "tail like" SPEO architecture on the copolymer/water interface.

Key words: Blood compatiable, Amphiphlic copolymer, Macromonomer technique, Surface properties

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