高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (8): 1317.

• 论文 • 上一篇    下一篇

金属螯合亲和膜吸附分离与纯化溶菌酶的研究(Ⅰ)──低温氧等离子体改性条件对亲和膜结构与吸附性能的影响

郑宇, 陈欢林, 李静, 柴红, 刘茉娥   

  1. 浙江大学化工学院, 杭州 310027
  • 收稿日期:1998-07-24 出版日期:1999-08-24 发布日期:1999-08-24
  • 通讯作者: 陈欢林
  • 作者简介:郑宇,男,26岁,硕士研究生.
  • 基金资助:

    国家自然科学基金(批准号:29676038)资助课题

Studies on the Affinity Membrane for Adsorption and Purification of Lysozyme(Ⅰ)——Influence of Low-temperature Oxygen Plasma Treatment on Surface Structure and Adsorption Properties of the Affinity Membrane

ZHENG Yu, CHEN Huan-Lin, LI Jing, CHAI Hong, LIU Mo-E   

  1. College of Chemical Engineering, Zhejiang University, Hangzhou 310027, China
  • Received:1998-07-24 Online:1999-08-24 Published:1999-08-24

摘要: 用低温氧等离子体方法对聚丙烯微孔膜表面进行改性.扫描电镜、红外光谱和光电子能谱综合分析结果表明,膜表面上产生了—OH、—COOH和C=O等极性基团,这些基团可被活化和偶联制亲和膜.所制备的Cu2+离子金属螯合亲和膜用于对溶菌酶的吸附,在20min和68W的最佳条件下,制成的亲和膜对溶菌酶的吸附量为8μg/cm2.

关键词: 低温氧等离子体, 聚丙烯膜, 金属螯合配基, 亲和吸附, 溶菌酶

Abstract: In this paper, low-temperature oxygen plasma method was used to modify the surface of PP(polypropylene) microporous membranes. The influence of oxygen plasma on the chemical structure and physical performance of the membrane was investigated with SEM, XPSand IRspectra. The results of XPSand IRshowed that polar groups, —OH, —COOH, C=O were created on these membrane surfaces. The groups —OH and —COOH were useful for activation and grafting process for affinity membrane with Cu2+ as a metal-chelating ligand. The influence of plasma treatment condition on the adsorbability of affinity membrane for lysozyme was carried out. The optimal adsorbability of lysozyme was 8μg/cm2 on the affinity membrane prepared for 20 min and under 68 Wplasma condition.

Key words: Low-temperature oxygen plasma, Polypropylene membrane, Metal-chelating ligand, Affinity adsorption, Lysozyme

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