中国塑料 ›› 2025, Vol. 39 ›› Issue (3): 36-40.DOI: 10.19491/j.issn.1001-9278.2025.03.007

• 材料与性能 • 上一篇    下一篇

醋酸纤维素多孔膜的制备及蛋白质吸附

侯文杰(), 杨娜, 任剑飞, 高大海, 郭改萍(), 戴玉华()   

  1. 北京石油化工学院新材料与化工学院,北京 102627
  • 收稿日期:2024-06-14 出版日期:2025-03-26 发布日期:2025-03-24
  • 通讯作者: 郭改萍(1982—),女,博士后,主要研究方向为生物质材料、热塑性聚氨酯材料,guogaiping@bipt.edu.cn
    戴玉华(1971—),女,教授,主要从事功能高分子材料、染料敏化太阳能电池以及与高分子相关的教学与科研工作,daiyuhua@bipt.edu.cn
    E-mail:2254486951@qq.com;guogaiping@bipt.edu.cn;daiyuhua@bipt.edu.cn
  • 作者简介:侯文杰(1997—),女,研究生,主要研究方向为基于纤维素的生物大分子相分离多孔膜的制备,2254486951@qq.com
    第一联系人:地址:北京市海淀区阜成路11号《中国塑料》杂志社
    邮编:100048

Preparation of cellulose acetate porous membrane and its adsorption for protein

HOU Wenjie(), YANG Na, REN Jianfei, GAO Dahai, GUO Gaiping(), DAI Yuhua()   

  1. School of New Materials and Chemical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102627,China
  • Received:2024-06-14 Online:2025-03-26 Published:2025-03-24
  • Contact: GUO Gaiping, DAI Yuhua E-mail:2254486951@qq.com;guogaiping@bipt.edu.cn;daiyuhua@bipt.edu.cn

摘要:

以醋酸纤维素为原料、以丙酮为溶剂、以水为非溶剂,制备结构可调、水通量高的醋酸纤维素多孔膜。并通过四甲基哌啶氧化物(TEMPO)/溴化钠(NaBr)/次氯酸钠(NaClO)氧化引入羧基基团用于蛋白质的选择分离。当醋酸纤维素浓度为10 %(质量分数,下同)、凝固浴温度为10 ℃、非溶剂水的含量为30 %时,醋酸纤维素多孔膜的综合性能最好,孔隙率为92.5 %,水通量为1 655.7 L/(m2·h),经氧化后,该膜在pH=6的环境下,对溶菌酶的吸附率为2 806.1 mg/g。

关键词: 醋酸纤维素, 非溶剂致相分离, 多孔膜

Abstract:

In this study, cellulose acetate porous membranes with an adjustable structure and a high water flux were prepared by using cellulose acetate as a raw material, acetone as a solvent, and water as a non⁃solvent. Carboxyl groups were introduced for selective separation of protein through the oxidation of tetramethylpyridine oxide/sodium bromide/sodium hypochlorite. With a porosity of 92.5 % and a water flux of 1 655.7 L/(m2·h), the cellulose acetate porous membranes exhibited optimal comprehensive performance at a cellulose acetate concentration of 10 wt%, a coagulation bath temperature of 10 ºC, and a non⁃solvent water content of 30 wt%. After oxidation, the cellulose acetate porous membrane obtained an adsorption rate of 2 806.1 mg/g for lysozyme at pH 6.

Key words: cellulose acetate, non solvent induced phase separation, porous membrane

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