Superhydrophobic poly(vinylidene fluoride) membranes with controllable structure and tunable wettability prepared by one-step electrospinning

Liu, Zhanjian; Wang, Huaiyuan; Wang, Enqun; Zhang, Xiguang; Yuan, Ruixia; Zhu, Yanji

doi:10.1016/j.polymer.2015.11.045

Cited by 121 publications

(54 citation statements)

References 43 publications

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“…From Figure S1, after 30 min, the contact angle of a water droplet sat on the selected membranes surface is still an obtuse angle, indicating their hydrophobic. Although the θ adv of the membranes after thermo‐pressing slightly decreases, these thermo‐pressed electrospun PVDF membranes still possess the better hydrophobicity due to the PVDF material inherently remarkable hydrophobicity . The d max of the pristine electrospun membranes is 5.2 μm due to three‐dimensional fluffy nonwoven structure, which will compel water to permeate the membrane quickly.…”

Section: Resultsmentioning

confidence: 99%

Improving waterproof/breathable performance of electrospun poly(vinylidene fluoride) fibrous membranes by thermo‐pressing

Lin

Bian

et al. 2017

J Polym Sci B Polym Phys

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Facing the ever-increasing demand for waterproof/ breathable materials, a rapid and efficient fabrication method of these functional materials with excellent performance as well as robust mechanical properties remains challenging. Herein, a simple and scalable strategy referred to as thermopressing is introduced to improve the waterproof/breathable performance and mechanical properties of electrospun PVDF fibrous membranes. The synergistic effect of temperature and pressure acted on the electrospun PVDF membranes on the fiber morphology and crystal structure was investigated, which can be able to effectively enhance waterproof performance and mechanical properties, endowing the as-prepared membranes with a modest breathability. The membranes thermo-pressed at 150 8C with a pressure of 8.27 MPa exhibit robust tensile strength of 40.65 MPa, which is superior to those of the previous reports (below 32.8 MPa). Notably, the optimized membranes enable to show a high hydrostatic pressure of 102 kPa, good WVTR of 10.87 kg m 22 d 21 and excellent abrasion resistance, which implies that the thermo-pressing is an efficient and facile way to steer the fiber morphology and crystal structure of electrospun membranes to improve their application performance.

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Section: Resultsmentioning

confidence: 99%

Improving waterproof/breathable performance of electrospun poly(vinylidene fluoride) fibrous membranes by thermo‐pressing

Lin

Bian

et al. 2017

J Polym Sci B Polym Phys

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“…The electrospun nanofibrous membranes exhibit unique characteristics such as high specific surface area and high porosity, which strongly benefit from the nanofiber‐based architecture. Many electrospun nanofibers, including poly(vinylidene fluoride) (PVDF), polyurethane (PU), polystyrene (PS), and polyacrylonitrile (PAN) have been successfully fabricated as superhydrophobic membranes. To further increase hydrophobicity, functional nanofibrous membranes are prepared by incorporating a variety of materials into/onto these polymer nanofibers via one‐step electrospinning or post modifications.…”

Section: Introductionmentioning

confidence: 99%

Preparation of hierarchically structured PCL superhydrophobic membrane via alternate electrospinning/electrospraying techniques

Zhang

Wang

Zhang

et al. 2019

J Polym Sci B Polym Phys

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Superhydrophobic polycaprolactone (PCL) membranes with hierarchical structure were fabricated via alternate electrospinning/electrospraying techniques. Electrospun PCL/methyl silicone oil (PCL/MSO) nanofibers were employed as substrate. PCL/MSO‐PCL microspheres (PCL/MSO‐PCLMS) hierarchical membrane was prepared via electrosprayed PCLMS as an additional layer on the substrate. Field emission scanning electron microscopy images showed the formation of hierarchical PCL/MSO‐PCLMS membranes. Compared to pure PCL fibers substrate (120 ± 1.3°), the water contact angle (WCA) of MSO‐modified PCL membrane was 142 ± 0.7°. The most interesting observation was that the WCA of PCLMS without any modification could be achieved to 146 ± 2.8°. On this basis, PCL/MSO‐PCLMS hierarchical membrane possessed superhydrophobic surface with 150 ± 0.6° of WCA. The excellent surface roughness and air‐pocket capacity of hierarchical membranes would make the membranes more hydrophobic. The maximum oil (n‐hexane) adsorption capacity of PCL/MSO‐PCLMS membrane was 32.53 g g−1. Oil–water separation efficiencies of the superhydrophobic membranes were all higher than 99.93% after 10 cycles. The hierarchically structured PCL superhydrophobic membranes indicate the potential applications of environmentally friendly biopolymers as separation membranes. © 2019 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2019, 57, 421–430

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“…[11][12][13][14] In previous literature, surfaces with excellent superhydrophobic properties have been prepared, including those with mechanical robustness and superamphiphobicity.…”

Section: Introductionmentioning

confidence: 99%

Transparent superhydrophobic PTFE films via one-step aerosol assisted chemical vapor deposition

et al. 2017

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In this study, hierarchical micro/nano-structured transparent superhydrophobic polytetrafluoroethylene (PTFE) films showing a water contact angle (CA) of 168 , a water sliding angle (SA) <1 and transmittance to visible light >90% were prepared on glass substrates via aerosol-assisted chemical vapor deposition (AACVD). Scanning electron microscopy showed the morphology to be rough, composed of both micro and nano sized protrusions. Mechanical testing showed that after impingement from 800 drops of 15 mL water (height ¼ 1 m) or 10 g of sand grains (height ¼ 65 cm), the CA of the transparent PTFE surface was still >150 , still demonstrating excellent superhydrophobicity. The films also showed self-cleaning and anti-corrosion properties. This one-step fabrication is a facile way of producing various kinds of transparent superhydrophobic surfaces.

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Superhydrophobic poly(vinylidene fluoride) membranes with controllable structure and tunable wettability prepared by one-step electrospinning

Cited by 121 publications

References 43 publications

Improving waterproof/breathable performance of electrospun poly(vinylidene fluoride) fibrous membranes by thermo‐pressing

Improving waterproof/breathable performance of electrospun poly(vinylidene fluoride) fibrous membranes by thermo‐pressing

Preparation of hierarchically structured PCL superhydrophobic membrane via alternate electrospinning/electrospraying techniques

Transparent superhydrophobic PTFE films via one-step aerosol assisted chemical vapor deposition

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