Cellulose acetate blending and cellulose nanocrystal doping improve the diafiltration and antifouling properties of polyvinylidene fluoride membranes

IF 4.9 2区工程技术 Q1 MATERIALS SCIENCE, PAPER & WOOD

Cellulose Pub Date : 2025-02-24 DOI:10.1007/s10570-025-06436-8

Xiaoyu Bai, Yuan Zhou, Jiangtao Li, Zhaoxia Xia, Zhaojiang Wang, Qiang Zhang, Yuanzhang Jiang, Guixin Wang, Lin Tan, Yong Zhang

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引用次数: 0

Abstract

In this paper, cellulose acetate (CA) and cellulose nanocrystal (CNC) modified polyvinylidene fluoride (PVDF) membranes were prepared by solution blending and non-solvent induced phase separation methods to improve the hydrophilicity and diafiltration capacity of the membranes. The changes in membrane performance before and after modification were systematically studied through simulated dialysis experiments, antifouling performance tests and biocompatibility analysis. The results show that CA blending and CNC doping will change the morphology and structure of the PVDF membrane, improve its hydrophilicity and permeability, and make it show better filtration capacity and antifouling performance. The modified PVDF membrane has higher clearance and diafiltration efficiency for small molecular solutes urea and creatinine, especially for the middle molecular solute lysozyme, while retaining most of the protein molecules, with a flux recovery rate of more than 95%. The modified PVDF membrane also has good biocompatibility. Bio-based CA and CNCs play an important role in improving the antifouling and diafiltration capacity of PVDF membranes.

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醋酸纤维素共混和纤维素纳米晶掺杂提高了聚偏氟乙烯膜的滤除性能和防污性能

本文采用溶液共混和非溶剂诱导相分离的方法制备了醋酸纤维素（CA）和纤维素纳米晶（CNC）改性聚偏氟乙烯（PVDF）膜，提高了膜的亲水性和滤失能力。通过模拟透析实验、防污性能测试和生物相容性分析，系统研究改性前后膜性能的变化。结果表明，CA共混和CNC掺杂会改变PVDF膜的形态和结构，提高其亲水性和渗透性，使其表现出更好的过滤能力和防污性能。改性后的PVDF膜对小分子溶质尿素和肌酐，特别是对中分子溶质溶菌酶具有较高的清除率和滤过效率，同时保留了大部分蛋白质分子，通量回收率达95%以上。改性PVDF膜还具有良好的生物相容性。生物基CA和cnc在提高PVDF膜的抗污和过滤能力方面发挥着重要作用。

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来源期刊

Cellulose 工程技术-材料科学：纺织

CiteScore

10.10

自引率

10.50%

发文量

580

审稿时长

3-8 weeks

期刊介绍： Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.