Co-deposition of pyrogallol/polyethyleneimine on polymer membranes for highly efficient treatment of oil-in-water emulsion

Zuo, Chengjiang; Wang, Lingbao; Tong, Yujia; Shi, Lijian; Ding, Wenlong; Li, Weixing

doi:10.1016/j.seppur.2021.118660

Cited by 40 publications

(15 citation statements)

References 45 publications

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“…The antifouling performance of the surface was further tested by rinsing after soaking in soybean oil. [ 38 ] As can be seen in Figure S5 , compared to M0 and M1, M3 did not have red soybean oil adhering to the surface when immersed in water. After the M3 membrane was vertically removed from the water, the soybean oil on the surface was easily rinsed off by pure water, whereas the M0 and M1 membranes would have residual red soybean oil on the surface that could not be rinsed off, indicating that the M3 membrane surface has excellent oil adhesion resistance and self-cleaning performance.…”

Section: Resultsmentioning

confidence: 96%

Inner Surface Hydrophilic Modification of PVDF Membrane with Tea Polyphenols/Silica Composite Coating

Tian

et al. 2021

Polymers

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The use of Polyvinylidene fluoride (PVDF) membranes is constrained in wastewater treatment because of their hydrophobic nature. Therefore, a large number of researchers have been working on the hydrophilic modification of their surfaces. In this work, a superhydrophilic tea polyphenols/silica composite coating was developed by a one-step process. The composite coating can achieve not only superhydrophilic modification of the surface, but also the inner surface of the porous PVDF membrane, which endows the modified membrane with excellent water permeability. The modified membrane possesses ultrahigh water flux (15,353 L·m−2·h−1). Besides this, the modified membrane can realize a highly efficient separation of oil/water emulsions (above 96%).

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Section: Resultsmentioning

confidence: 96%

Inner Surface Hydrophilic Modification of PVDF Membrane with Tea Polyphenols/Silica Composite Coating

Tian

et al. 2021

Polymers

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“…Therefore, we can affirm that the OB@5%PY sealer had both a rougher and more hydrophilic surface than other composites. Zuo et al [34] reported that PY could be applied in polymer materials in order to fabricate hydrophilic coatings. The mechanical properties of endodontic sealers are very important to strengthen treated root canals as well as to increase resistance to displacement of the gutta-percha cone during and after its placement [3,35].…”

Section: Discussionmentioning

confidence: 99%

Impacts of Resveratrol and Pyrogallol on Physicochemical, Mechanical and Biological Properties of Epoxy-Resin Sealers

et al. 2022

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This study aimed at evaluating the physicochemical and biological properties of experimental epoxy-resin sealers containing polyphenols such as resveratrol and pyrogallol. A conventional epoxy resin (OB) was modified by adding different concentrations of resveratrol (RS) or pyrogallol (PY) to its composition. Antibacterial and antioxidant activities, mechanical properties, along with wettability and morphological changes were investigated. The results were statistically analyzed using ANOVA and multiple comparison tests (α = 0.05). The incorporation of the tested polyphenols into the epoxy resin enhanced its mechanical properties. PY demonstrated much better antioxidant and antibacterial activities than RS, which were associated with a higher release of PY. In contrast, PY showed a higher cytotoxicity than OB and OB doped with RS. OB containing PY presented a rougher surface and higher water absorption than OB doped with RS. Both tested polyphenols caused no notable changes to the overall porosity of OB. Resveratrol and pyrogallol may not only influence the morphology and mechanical properties of epoxy-resin sealers, but could also enhance antioxidant activity and antibacterial effects against Enterococcus faecalis. Most epoxy-resin sealers currently available in the market can be considered as “passive” materials. Thus, doping their composition with specific polyphenols may be a suitable strategy to confer some antibacterial properties, antioxidant potential, along with improvement of some mechanical properties.

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“…Then, the two phases are blended together, and the composite particles are filtered after evaporating the solvent. The emulsion droplets remain stable and dispersive, preventing the coating particles from aggregation [19,[73][74][75]. The emulsion polymerization is easy to operate.…”

Section: Emulsion Methodsmentioning

confidence: 99%

“…As an important branch of coating, the design and preparation of core–shell structures have attracted much attention recently due to their potential applications [ 16 , 17 , 18 , 19 ]. Over the last decade, the number of publications and citations in terms of core–shell structured explosives (CSEs) has increased significantly, as shown in Figure 1 .…”

Section: Introductionmentioning

confidence: 99%

The Art of Framework Construction: Core–Shell Structured Micro-Energetic Materials

Duan¹,

Li²,

Hu³

et al. 2021

Molecules

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Weak interfacial interactions remain a bottleneck for composite materials due to their weakened performance and restricted applications. The development of core–shell engineering shed light on the preparation of compact and intact composites with improved interfacial interactions. This review addresses how core–shell engineering has been applied to energetic materials, with emphasis upon how micro-energetic materials, the most widely used particles in the military field, can be generated in a rational way. The preparation methods of core–shell structured explosives (CSEs) developed in the past few decades are summarized herein. Case studies on polymer-, explosive- and novel materials-based CSEs are presented in terms of their compositions and physical properties (e.g., thermal stability, mechanical properties and sensitivity). The mechanisms behind the dramatic and divergent properties of CSEs are also clarified. A glimpse of the future in this area is given to show the potential for CSEs and some suggestions regarding the future research directions are proposed.

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Co-deposition of pyrogallol/polyethyleneimine on polymer membranes for highly efficient treatment of oil-in-water emulsion

Cited by 40 publications

References 45 publications

Inner Surface Hydrophilic Modification of PVDF Membrane with Tea Polyphenols/Silica Composite Coating

Inner Surface Hydrophilic Modification of PVDF Membrane with Tea Polyphenols/Silica Composite Coating

Impacts of Resveratrol and Pyrogallol on Physicochemical, Mechanical and Biological Properties of Epoxy-Resin Sealers

The Art of Framework Construction: Core–Shell Structured Micro-Energetic Materials

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