Reinforced-Concrete Inspired Porous Polymeric Membranes: Improved Mechanical Robust and Compaction Resistance via Incorporating Cellulose Nanofibers

被引：0

作者：

Zhi, Chao ^{[1
]}

Xu, Jibin ^{[1
]}

Chen, Yukai ^{[1
]}

Dong, Liangliang ^{[1
]}

Bai, Yunxiang ^{[1
]}

Zhang, Chunfang ^{[1
]}

机构：

[1] Jiangnan Univ, Sch Chem & Mat Engn, Key Lab Synthet & Biol Colloids, Minist Educ, Wuxi, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2025年

基金：

中国国家自然科学基金;

关键词：

ULTRAFILTRATION MEMBRANES; ENHANCED PERFORMANCE; CONTACTOR;

D O I：

10.1002/app.57023

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Membrane compaction is an ever-present problem that can dramatically cause a flux drop during the practical application of porous polymeric membranes. Inspired by the reinforced concrete structure, we incorporated one-dimensional cellulose nanofibers (CNFs) into a polyvinylidene fluoride (PVDF) matrix to form a reinforced-concrete-like structure through interfacial hydrogen bonding in the process of NIPS. The resulting PVDF@CNF membrane demonstrates a remarkable increase in tensile strength of 178.2% and hardness of 123.4% as compared with the pure PVDF membrane. Furthermore, the anti-compaction factor was improved by 41%. The enhanced compaction resistance, along with a thinner skin layer and improved hydrophilicity, brought about a 2.6-fold increase in stable water flux compared to the pure PVDF membrane. The PVDF@CNF membrane also demonstrated excellent separation capabilities, achieving high rejection rates for BSA (93.5%) and whey protein (96.2%), while exhibiting superior antifouling properties with an improved flux recovery ratio (FRR) from 61.0% to 87.2%.

引用

页数：15