Superhydrophobic poly(vinylidene fluoride) film fabricated by alkali treatment enhancing chemical bath deposition

Zheng, Zhiping; Gu, Zhengrong; Huo, Ruiting; Luo, Zhishan

doi:10.1016/j.apsusc.2009.09.048

Cited by 53 publications

(25 citation statements)

References 26 publications

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“…For a part of water droplet sitting on air, the contact area between water dropletsand M-1 membrane decreases, the adhesion strength between water droplets and M-1 membrane surface decreases, and the dirt particles on the rough surface are easy to be taken away by water droplets. This was further confirmed by self-cleaning test [22].…”

Section: Mechanical Properties Of Composite Membranessupporting

confidence: 59%

Preparation of hydrophobic PVDF/PVC/nano-graphite composite membrane and its self-cleaning properties

Zhang

et al. 2020

Mater. Res. Express

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In this study, novel physical blending modified membranes are prepared using the non-solvent induced phase separation method, the influences of nano-graphite and Poly(vinyl chloride) (PVC) incorporated into the hydrophobic performance of the polyvinylidene fluoride (PVDF) membrane were investigated. The composite membrane was prepared not only reduces the cost of producing PVDF membrane, but also enhances the hydrophobicity of the membrane. The addition of nano graphite and PVC accelerated the phase transformation of PVDF and changed the crystal structure of PVDF. Therefore, the surface roughness of the composite membrane is changed, and the hydrophobicity of the composite membrane is enhanced compared with the original PVDF membrane. the crystal structure and crystallinity of the composite membranes can be analyzed by WAXD and DSC, the surfaces morphology of the composite membranes were characterized by SEM and AFM, the wetting and hydrophobicity of the composite membrane by CA and SFE. The experimental results show that adding a small amount of nano inorganic substance (nano graphite) to the (PVDF-PVC) blend polymer is an effective method to prepare and improve the hydrophobic performance of the blend polymer membrane. The PVDF-PVC/nano-graphite prepared in the experiment not only improves the hydrophobic performance of the PVDF membrane, but also reduces the cost of the composite membrane through the addition of PVC. Meanwhile, the membrane has a durable self-cleaning performance, which widens the applications of PVDF membranes.

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Section: Mechanical Properties Of Composite Membranessupporting

confidence: 59%

Preparation of hydrophobic PVDF/PVC/nano-graphite composite membrane and its self-cleaning properties

Zhang

et al. 2020

Mater. Res. Express

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show abstract

“…Hence, PVDF membrane is widely used in structural material coating applications, such as the surface materials of vehicle, boots, raincoat, and the cover of outdoor airconditioner [29,30]. In the future, with the coating layer with self-cleaning property, the PVDF membranes will be able to be fabricated, the dusts on which will be easily washed away by rain, thus saving a great deal of manpower and cost for cleaning services [31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Preparation of a durable superhydrophobic membrane by electrospinning poly (vinylidene fluoride) (PVDF) mixed with epoxy–siloxane modified SiO2 nanoparticles: A possible route to superhydrophobic surfaces with low water sliding angle and high water contact angle

Wang

Fei

et al. 2011

Journal of Colloid and Interface Science

170

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“…Figure shows the cross‐linking mechanisms for both reactions . Because EDA is a strong base, it could induce the dehydrfulorination reaction in PVDF polymer chains . For direct cross‐linking, the dehydrofluorination reaction occurs between two neighboring polymer chains.…”

Section: Resultsmentioning

confidence: 99%

In‐situ cross‐linked PVDF membranes with enhanced mechanical durability for vacuum membrane distillation

Zuo

Chung

2016

AIChE Journal

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A novel and effective one-step method has been demonstrated to fabricate cross-linked polyvinylidene fluoride (PVDF) membranes with better mechanical properties and flux for seawater desalination via vacuum membrane distillation (VMD). This method involves the addition of two functional nonsolvent additives; namely, water and ethylenediamine (EDA), into the polymer casting solution. The former acts as a pore forming agent, while the latter performs as a crosslinking inducer. The incorporation of water tends to increase membrane flux via increasing porosity and pore size but sacrifices membrane mechanical properties. Conversely, the presence of EDA enhances membrane mechanical properties through in-situ cross-linking reaction. Therefore, by synergistically combining the effects of both functional additives, the resultant PVDF membranes have shown good MD performance and mechanical properties simultaneously. The parameters that affect the cross-link reaction and membrane mechanical properties such as reaction duration and EDA concentration have been systematically studied. The membranes cast from an optimal reaction condition comprising 0.8 wt % EDA and 3-hour reaction not only shows a 40% enhancement in membrane Young's Modulus compared to the one without EDA but also achieves a good VMD flux of 43.6 L/m 2 -h at 608C. This study may open up a totally new approach to design next-generation high performance MD membranes.

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Superhydrophobic poly(vinylidene fluoride) film fabricated by alkali treatment enhancing chemical bath deposition

Cited by 53 publications

References 26 publications

Preparation of hydrophobic PVDF/PVC/nano-graphite composite membrane and its self-cleaning properties

Preparation of hydrophobic PVDF/PVC/nano-graphite composite membrane and its self-cleaning properties

Preparation of a durable superhydrophobic membrane by electrospinning poly (vinylidene fluoride) (PVDF) mixed with epoxy–siloxane modified SiO2 nanoparticles: A possible route to superhydrophobic surfaces with low water sliding angle and high water contact angle

In‐situ cross‐linked PVDF membranes with enhanced mechanical durability for vacuum membrane distillation

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