Preparation and Performance of Hydroxyl-functionalized Multi-walled Carbon Nanotubes/Polyvinylidene Fluoride Blend Membranes

SHI Meng-zhi; WANG Wei

doi:10.14028/j.cnki.1003-3726.2025.25.206

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Preparation and Performance of Hydroxyl-functionalized Multi-walled Carbon Nanotubes/Polyvinylidene Fluoride Blend Membranes

更新时间：2025-10-30

- Preparation and Performance of Hydroxyl-functionalized Multi-walled Carbon Nanotubes/Polyvinylidene Fluoride Blend Membranes
- Polymer Bulletin Vol. 38, Issue 11, Pages: 1693-1703(2025)
- 作者机构：
  
  1.山西工程技术学院材料科学与工程系，矿区生态修复与固废资源化省市共建省级重点实验室，阳泉 045000
  2.天津工业大学材料科学与工程学院，省部共建分离膜与膜过程国家重点实验室，天津 300387
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2025.25.206
  CLC：
- Received：22 July 2025，
  
  Accepted：12 September 2025，
  
  Published Online：24 October 2025，
  
  Published：20 November 2025
- 稿件说明：
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史梦芝, 王薇. 羟基化多壁碳纳米管/聚偏氟乙烯共混膜的制备与性能研究. 高分子通报, 2025, 38(11), 1693-1703.

Shi, M. Z.; Wang, W. Preparation and performance of hydroxyl-functionalized multi-walled carbon nanotubes/polyvinylidene fluoride blend membranes. Polym. Bull. (in Chinese), 2025, 38(11), 1693-1703.
史梦芝, 王薇. 羟基化多壁碳纳米管/聚偏氟乙烯共混膜的制备与性能研究. 高分子通报, 2025, 38(11), 1693-1703. DOI： 10.14028/j.cnki.1003-3726.2025.25.206.

Shi, M. Z.; Wang, W. Preparation and performance of hydroxyl-functionalized multi-walled carbon nanotubes/polyvinylidene fluoride blend membranes. Polym. Bull. (in Chinese), 2025, 38(11), 1693-1703. DOI： 10.14028/j.cnki.1003-3726.2025.25.206.

摘要

为克服聚偏氟乙烯(PVDF)膜表面能低、亲水性差、易被污染、使用寿命短等缺点，选用经羟基功能化后的多壁碳纳米管(MWCNTs-OH)作为改性剂，采用低温热致相分离(L-TIPS)法制备得到MWCNTs-OH/PVDF共混膜。研究了MWCNTs-OH的质量分数对膜的微观结构、过滤性能、力学性能、亲水性以及抗污染性能的影响，结果表明

：随着MWCNTs-OH质量分数的增加，共混膜的纯水通量呈先增大后减小的趋势，MWCNTs-OH为0.04 wt%时水通量达到最大，为508.94 L/(m

·h)；MWCNTs-OH的加入使膜对聚乙二醇10000 (PEG10000)的截留率在一定程度上有所提高，MWCNTs-OH为0.03 wt%时截留率达到最大，为95.9%；膜的拉伸强度与断裂伸长率均表现为先增大后减小的趋势，MWCNTs-OH为0.04 wt%时达到最大，分别为2.69 MPa和77.3%；抗污染性能测试结果显示，当铸膜液中含有MWCNTs-OH时，膜的平均粗糙度由0.354 μm (MWCNTs-OH为0 wt%)减小为0.056 μm (MWCNTs-OH为0.04 wt%)，经牛血清蛋白(BSA)污染后的通量恢复率能够达到93.67% (MWCNTs-OH为0.04 wt%)。综上所述，通过在铸膜液中添加经改性后的多壁碳纳米管，可以有效改善PVDF膜的综合性能，从而使其在应用中的表现更为优异。

Abstract

To address the limitations of poly(vinylidene fluoride) (PVDF) membranes

such as low surface energy

inadequate hydrophilicity

susceptibility to fouling

and limited lifespan

MWCNTs-OH/PVDF blend membranes were prepared

via

the low-temperature thermally induced phase separation (L-TIPS) method using hydroxyl-functionalized multi-walled carbon nanotubes (MWCNTs-OH) as modifiers. The effect of MWCNTs-OH mass fraction on the microstructure

filtration performance

mechanical properties

hydrophilicity

and antifouling performance of the membranes was investigated. The findings revealed that an increase in the MWCNTs-OH mass fraction initially enhanced the pure water flux of the blended membrane

peaking at 508.94 L/(m

·h) with 0.04 wt% MWCNTs-OH. The rejection ratio of polyethylene glycol 10000 (PEG10000) also increased

reaching 95.9% at 0.03 wt% MWCNTs-OH. Moreover

the tensile strength and elongation at break exhibited an increasing trend followed by a decrease

with 0.04 wt% MWCNTs-OH yielding maximum values of 2.69 MPa and 77.3%

respectively. Incorporating MWCNTs-OH in the casting solution led to a reduction in membrane average roughness from 0.354 μm (0 wt% MWCNTs-OH) to 0.056 μm (0.04 wt% MWCNTs-OH)

with a flux recovery ratio of 93.67% (0.04 wt% MWCNTs-OH) was achieved after bovine serum albumin (BSA) fouling. In conclusion

the addition of modified MWCNTs to the casting solution effectively enhanced the overall performance of PVDF membranes

thereby improvi

ng their applicability.

关键词

Keywords

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