Incorporation of graphene oxide on thin film composite polysulfone/polyamide membranes

Silva, Rafael Isidoro da; Figueiredo, Kátia Cecília de Souza

doi:10.1007/s43153-021-00098-2

Cited by 3 publications

(2 citation statements)

References 38 publications

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“…In the jth index, if all x ij are the same, then E j E max 1. At this time, each evaluation index cannot be used for comprehensive evaluation and would not affect the score (Da Silva and Cecilia, 2022). When the difference is large, the size of the index becomes smaller, indicating that the index has a greater impact on the comprehensive evaluation, thus determining the weight of each indicator.…”

Section: Decision-making Steps Based On Entropy Weight Topsis Methodsmentioning

confidence: 99%

Properties of graphene composite fiber seamless knitted fabric and its application in boxing training

Liu

2023

Front. Mater.

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In boxing, the wrong training methods can easily cause physical injury, so many sports protective clothing will use new materials to reduce the impact of boxing training. The aim of this paper is to design a boxing suit based on graphene composite fiber seamless knitted fabric, so as to reduce the injury of boxers during training. In this paper, the head yarn, inner yarn and knitting structure of graphene composite fiber seamless knitted fabrics are discussed, and nine kinds of fabrics are determined by orthogonal matrix method; then, a comprehensive evaluation of the wear resistance of fabrics was proposed based on sequence entropy weight technology, and the ideal solution similarity (TOPSIS) method was used to calculate the wear resistance; finally, this paper designed the boxing protective suit according to the best combination of performance. The experimental results in this paper showed that the veil of sample No. 7 is 70D/48F graphene nylon, the inner yarn is 30D graphene spandex/70D graphene nylon covered yarn, and the fabric with the knitted structure of 1 + 3 false rib has the best comprehensive performance and the highest relative proximity, reaching 0.862. The actual wearing test proves that the comfort of anti-impact boxing suit is slightly better than that of ordinary boxing suit. The clothing designed in this paper has good anti-impact effect. Therefore, on the whole, the boxing suit with graphene composite fiber seamless knitted fabric has good protective effect and can be used for boxing training.

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Section: Decision-making Steps Based On Entropy Weight Topsis Methodsmentioning

confidence: 99%

Properties of graphene composite fiber seamless knitted fabric and its application in boxing training

Liu

2023

Front. Mater.

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“…More specifically, researchers have sought to leverage hydrodynamic phenomena' simulation and modeling studies to optimize membrane distillation operating parameters [1][2][3][4][5]. Furthermore, the choice of membrane materials and fabrication processes have been widely explored to increase the permeate flux and mitigate fouling phenomena [6][7][8][9][10]. According to Culfaz et al [11], the helical configuration of the membrane promotes turbulence and therefore causes a significant reduction in concentration polarization.…”

Section: Introductionmentioning

confidence: 99%

Applications of Helical Versus Straight Hollow Fiber Membranes: A Review

Zrelli¹,

Debaya²,

Doucoure³

et al. 2022

ETJ

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A comprehensive comparison was performed between helical and straight hollow fibers.  Applications of helical hollow fibers membrane were studied.  The use of helical fibers minimizes fouling and concentration polarization.  Helical configuration promotes turbulence.The production of straight and helical hollow fibers plays an important role in developing hollow fiber membrane technology that encompasses a broad range of designs. During the last two decades, scientific studies devoted to straight hollow fibers were more abundant than those focused on helical fibers. Several major applications considering side-by-side testing of these two geometries are discussed in this review. For membrane extraction, desalination, and membrane contactor processes, it is observed that permeability rates are 10%-400 % higher for helical fibers compared to straight fibers. This outcome is justified by the presence of Dean-vortices-induced flow turbulences inherent to the geometry of helical membranes. These conditions give rise to an uptake of mass and heat transfer coefficients and a reduction of temperature and concentration polarization phenomena. Aside from enhanced flow properties, helical hollow fiber bundles tend to be more robust by design, thus exhibiting better resiliency over long service operations than straight bundles. One persistent shortcoming of the helical fibers seems to be an increase in pressure drop. However, this does not always translate into a higher energy consumptioni.e., versus straight bundles. Given the performance advantage, product robustness, and adaptiveness to a broad range of applications, the adoption of helical hollow fiber technology deserves growing support from the membrane community in academic and industrial settings.

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Influence of melamine and graphene oxide on the performance of polyamide reverse osmosis membranes for desalination

Elghonemy,

Hamdy,

Abdallah

et al. 2024

Appl Nanosci

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Incorporation of graphene oxide on thin film composite polysulfone/polyamide membranes

Cited by 3 publications

References 38 publications

Properties of graphene composite fiber seamless knitted fabric and its application in boxing training

Properties of graphene composite fiber seamless knitted fabric and its application in boxing training

Applications of Helical Versus Straight Hollow Fiber Membranes: A Review

Influence of melamine and graphene oxide on the performance of polyamide reverse osmosis membranes for desalination

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