Preparation of Non-woven Fabric Reinforced Poly(vinylidene fluoride) Composite Membranes for Water Treatment 


Vol. 23,  No. 5, pp. 1378-1386, May  2022
10.1007/s12221-022-4301-2


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  Abstract

To optimize the mechanical properties of polymeric membranes fabricated by non-solvent induced phase separation (NIPS), a non-woven fabric has been used to reinforce the composite membrane. However, it remains a challenge to prepare an intact polymer membrane on the non-woven fabric because casting dopes usually spread into the porous substrate. Herein, a kind of non-woven fabric reinforced poly(vinylidene fluoride) (PVDF) composite membrane was fabricated by using poly(vinyl pyrrolidone) (PVP) to control the viscosity of casting dopes. Additionally, the effects of nonwoven fabric on the membrane structure and properties were explored in the light of dynamics during the phase inversion process. A porous skin layer and long finger-like pores were successfully created on the surface and inner of membranes when 6 wt% PVP was added in the casting dopes. Compared with pure PVDF membranes, the pure water flux of the resultant membrane was elevated from 49.9 L/m2h to 656 L/m2h, BSA rejection from 40.5 % to 86.4 %, and flux recovery ratio (FRR) from 58.7 % to 86.1 %. More importantly, it also possessed outstanding mechanical properties, which far outperforms the results reported in some literatures. This study suggests a promising strategy to fabricate PVDF composite membranes with preeminent properties for wastewater treatment.

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  Cite this article

[IEEE Style]

X. Wu, H. Shao, J. Cheng, D. Kang, "Preparation of Non-woven Fabric Reinforced Poly(vinylidene fluoride) Composite Membranes for Water Treatment," Fibers and Polymers, vol. 23, no. 5, pp. 1378-1386, 2022. DOI: 10.1007/s12221-022-4301-2.

[ACM Style]

Xiao Wu, Huiju Shao, Jifeng Cheng, and Dongdong Kang. 2022. Preparation of Non-woven Fabric Reinforced Poly(vinylidene fluoride) Composite Membranes for Water Treatment. Fibers and Polymers, 23, 5, (2022), 1378-1386. DOI: 10.1007/s12221-022-4301-2.

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