Preparation and Characterization of a New Negatively Charged PTFE Fiber Membrane for Separating Oil-in-water Emulsions Containing Cationic Emulsifiers

Li, Chengcai; Tang, Tao; Zheng, Tao; Hong, Wei; Wang, Rui; Liu, Guojin; Lei, Caihong; Yu, Yuan; Zhu, Hailin; Guo, Yuhai

doi:10.1007/s12221-021-0390-6

Cited by 8 publications

(2 citation statements)

References 45 publications

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“…The peaks at 1625 cm − 1 result from the stretching vibration of C = C bond in the indole aromatic ring of PDA [30]. The new band at 1499 cm − 1 corresponds to the shearing vibration of N-H [31].…”

Section: Surface Chemical Structures Of Cfmentioning

confidence: 99%

Carbon fiber‐reinforced epoxy composite properties improvement by incorporation of polydopamine sizing at fiber–matrix interface

et al. 2023

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To gain better interfacial and mechanical performances of carbon ber reinforced epoxy resin (CF/EP) composites, the surface modi cation of CF was carried out via a simple mild method. The polydopamine (PDA) was applied to size the CF, as well as the in uence of PDA sizing time on CF were elucidated. As the PDA deposited time increases, a growing number of PDA nanoparticles were adhered on CF surface, associating with appearance of PDA agglomerates. Through analyzing the results, the optimum PDA sized time was 24 h. The introduction of PDA increase the chemical reaction and mechanical interlocking between ber and matrix. Compared with unsized CF, the tensile strength of PDA 24 h sized CF was improved by 27.0%, the interlaminar shear strength, exural and impact strength of PDA 24 h sized CF/EP composites increased by 103.7%, 65.6% and 163.6%, respectively. Furthermore, the fracture topographies of CF/EP composite strikingly implied that the PDA has a positive impact on the mechanical performances of CF/EP composites.

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Section: Surface Chemical Structures Of Cfmentioning

confidence: 99%

Carbon fiber‐reinforced epoxy composite properties improvement by incorporation of polydopamine sizing at fiber–matrix interface

et al. 2023

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“…However, the low demulsification speed of emulsified asphalt, particularly early in the process, restricts the use of emulsified asphalt mixtures (Baoju et al, 2022). The demulsification process of emulsified asphalt is determined by a range of factors, such as aggregate properties (Xu et al, 2017;Wang et al, 2021), the types and dosage of emulsified asphalt (Jin et al, 2013;Li and Wang 2014;Xiao et al, 2019;Li et al, 2021), temperature (Baoju et al, 2022), additives (Jiang et al, 2021), pH (Fajun et al, 2020), oil-water interface tension (Tao et al, 2015), and various combinations of materials and construction characteristics (Baoju et al, 2022). The aggregate typically accounts for more than 90% of the weight of the asphalt mixture (Pan et al, 2017).…”

Section: Introduction 1emulsified Asphalt Demulsificationmentioning

confidence: 99%

Influence of aggregate chemical composition on the demulsification rate of emulsified asphalt

et al. 2022

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Efficient demulsification is vital for the application of emulsified asphalt in road construction. In this paper, the effects of the main chemical components of the aggregates (CaCO3, MgO, Fe2O3, SiO2, Al2O3) on the demulsification process of emulsified asphalt were studied by experiment and simulation using a Gompertz model. The findings indicate that the surface energy, specific surface area, and pH of the chemical components of the aggregates are the most important factors influencing the demulsification speed of the emulsified asphalt. The choice of the aggregate’s main chemical components can accelerate demulsification speed, with the acceleration effect of Al2O3 on anionic (SDBS) emulsified asphalt and MgO on cationic (STAC) emulsified asphalt both reaching 60%. The fit between the Gompertz model and the experimental viscosity curve is greater than 0.93, which verifies the utility of using the Gompertz approach for studying emulsified asphalt-aggregate mortar viscosity changes. A demulsification evaluation function φ(t) of emulsified asphalt is proposed based on the parameters of the Gompertz model. When φ(t) is close to 1, the emulsified asphalt-aggregate mortar is fully demulsified, and setting φ(t)=1 allows the demulsification time of the emulsified asphalt-aggregate mortar to be calculated from the Gompertz model parameters.

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Investigation on fabrication of durable superhydrophobic surface based on multi-adhesive strategy

Cui

et al. 2022

Applied Surface Science

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Preparation and Characterization of a New Negatively Charged PTFE Fiber Membrane for Separating Oil-in-water Emulsions Containing Cationic Emulsifiers

Cited by 8 publications

References 45 publications

Carbon fiber‐reinforced epoxy composite properties improvement by incorporation of polydopamine sizing at fiber–matrix interface

Carbon fiber‐reinforced epoxy composite properties improvement by incorporation of polydopamine sizing at fiber–matrix interface

Influence of aggregate chemical composition on the demulsification rate of emulsified asphalt

Investigation on fabrication of durable superhydrophobic surface based on multi-adhesive strategy

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