醋酸纤维素/羟基磷灰石复合膜的二氧化钛表面改性研究

doi:10.16552/j.cnki.issn1001-1625.2025.0018

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (8): 3079-3087.DOI: 10.16552/j.cnki.issn1001-1625.2025.0018

醋酸纤维素/羟基磷灰石复合膜的二氧化钛表面改性研究

刘佳鑫, 刘莉, 王爽, 张诗晟, 朱庆霞

天津工业大学天津市先进纤维材料与储能技术重点实验室,天津 300387

收稿日期:2025-01-03 修订日期:2025-03-06 出版日期:2025-08-15 发布日期:2025-08-22
通信作者: 朱庆霞,博士,教授。E-mail:qingxia-zhu@163.com
作者简介:刘佳鑫(2000—),女,硕士研究生。主要从事无机陶瓷膜的制备与性能方面的研究。E-mail:liujiax@163.com
基金资助:
天津市科技特派员项目(20YDTPJC01690);天津工业大学2024年大学生创新创业训练计划项目(202410058157)

Surface Modification of Titanium Dioxide on Cellulose Acetate/Hydroxyapatite Composite Membrane

LIU Jiaxin, LIU Li, WANG Shuang, ZHANG Shisheng, ZHU Qingxia

Tianjin Key Laboratory of Advanced Fibre Materials and Energy Storage Technology, Tiangong University, Tianjin 300387, China

Received:2025-01-03 Revised:2025-03-06 Published:2025-08-15 Online:2025-08-22

摘要/Abstract

摘要： 有机膜的无机纳米粒子改性一直是研究的热点。聚多巴胺(PDA)可被用来增加二氧化钛(TiO₂)在醋酸纤维素/羟基磷灰石(CA/HA)复合膜上的黏附力。本文探讨了PDA聚合时间和TiO₂浓度对膜结构、亲水性、渗透性能、力学性能,以及复合膜的抗污染性能和光催化性能的影响。结果表明,PDA和TiO₂的引入提高了膜表面亲水性,并显著提高了膜的截留率。随着PDA聚合时间的增加,复合膜的拉伸强度先增大后减小。TiO₂赋予了膜光催化性能,提升了有机膜的膜再生性能。当PDA聚合时间为6 h、TiO₂浓度为0.1%(质量分数)时,复合膜展现出较高的通量恢复率和良好的抗污染性能。

关键词: 醋酸纤维素/羟基磷灰石复合膜, TiO₂纳米粒子, 光催化, 润湿性, 抗污染性能

Abstract: The modification of organic membranes with inorganic nanoparticles has always been a research hotspot. Polydopamine (PDA) can be used to increase the adhesion of titanium dioxide (TiO₂) on cellulose acetate/hydroxyapatite (CA/HA) composite membranes. In this study, the effects of PDA polymerization time and TiO₂ concentration on membrane structure, hydrophilicity, permeability, mechanical properties, as well as the pollution resistance and photocatalytic performance of composite membrane were investigated. The research results indicate that the introduction of PDA and TiO₂ improves the hydrophilicity of the membrane surface, and significantly increases membrane retention. With the increase of PDA polymerization time, the tensile strength of composite membranes increases first and then decreases. TiO₂ endows the membrane with photocatalytic performance, improves membrane regeneration performance of organic membranes. The composite membrane exhibites high flux recovery rate and excellent pollution resistance with the PDA polymerization time of 6 h and TiO₂ concentration of 0.1% (mass fraction).

Key words: cellulose acetate/hydroxyapatite composite membrane, TiO₂ nanoparticle, photocatalytic, wettability, pollution resistance

中图分类号:

TQ028

刘佳鑫, 刘莉, 王爽, 张诗晟, 朱庆霞. 醋酸纤维素/羟基磷灰石复合膜的二氧化钛表面改性研究[J]. 硅酸盐通报, 2025, 44(8): 3079-3087.

LIU Jiaxin, LIU Li, WANG Shuang, ZHANG Shisheng, ZHU Qingxia. Surface Modification of Titanium Dioxide on Cellulose Acetate/Hydroxyapatite Composite Membrane[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(8): 3079-3087.

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醋酸纤维素/羟基磷灰石复合膜的二氧化钛表面改性研究

Surface Modification of Titanium Dioxide on Cellulose Acetate/Hydroxyapatite Composite Membrane

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