Laminated PET-based membranes with sweat transportation and dual thermal insulation properties

Chen, Yongfang; Zhao, Bencheng; Zhang, Hanlin; Zhang, Tao; Yang, Dongya; Qiu, Fengxian

doi:10.1016/j.cej.2022.138177

Cited by 36 publications

(15 citation statements)

References 31 publications

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“…For instance, waste PET bottles were recycled and used to fabricate porous membranes for the filtration of hightemperature solvents [13], to obtain thin-film composite membranes with high chemical and heat resistance [14] and to develop nanofibrous membranes for oil removal [15]. In the same vein, waste PET fabric has been used to fabricate flexible wearable membranes for personal thermal management applications [16]. Since PET has a lower density than sand, research about replacing the sand used in concrete with PET has focused on a substitution based on volume, not weight [7].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Compression and Flexural Properties of Masonry Veneers with Recycled PET-1

et al. 2023

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The study of new materials formulated using recycled polymers offers an ecological and sustainable alternative for the construction industry. In this work, we optimized the mechanical behavior of manufactured masonry veneers made from concrete reinforced with recycled polyethylene terephthalate (PET) from discarded plastic bottles. For this purpose, we used the response surface methodology to evaluate the compression and flexural properties. PET percentage, PET size and aggregate size were used as input factors in a Box–Behnken experimental design resulting in a total of 90 tests. The fraction of the commonly used aggregates replaced by PET particles was 15%, 20% and 25%. The nominal size of the PET particles used was 6, 8 and 14 mm, while the size of the aggregates was 3, 8 and 11 mm. The function of desirability was used to optimize response factorials. The globally optimized formulation contained 15% of 14 mm PET particles in the mixture, and 7.36 mm aggregates, obtaining important mechanical properties of this characterization of masonry veneers. The flexural strength (four-point) was 1.48 MPa, and the compression strength was 3.96 MPa; these values show property improvements of 110% and 94%, respectively, compared to commercial masonry veneers. Overall, this offers the construction industry a robust and environmentally friendly alternative.

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Section: Introductionmentioning

confidence: 99%

Optimization of Compression and Flexural Properties of Masonry Veneers with Recycled PET-1

et al. 2023

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“…With the continuous improvement in living standards, plastic products such as plastic bottles, plastic sachets, and plastic boxes are indispensable in daily life due to the low production cost, lightweight, and easy processing of plastics. , However, due to the excessive use of plastic products and the subsequent poor waste management, a mass of discarded plastics would gradually degrade into microparticles and eventually accumulate in the human body along the biological chain. , The traditional methods of handling waste plastic including landfills, incineration, solvent decomposition, and pyrolysis have some disadvantages owing to the technical constraints and economic obstacles. For example, microplastics and dioxins are produced in landfills and incineration of waste plastics, forming secondary pollution in soil, water, and air . In addition, several strategies have been used to recycle waste plastic, including sieving filtration, density separation, hydrogenolysis, photocatalysis, and chemical recycling .…”

Section: Introductionmentioning

confidence: 99%

“…For example, microplastics and dioxins are produced in landfills and incineration of waste plastics, forming secondary pollution in soil, water, and air. 9 In addition, several strategies have been used to recycle waste plastic, including sieving filtration, 10 density separation, 11 hydrogenolysis, 12 photocatalysis, 13 and chemical recycling. 14 However, sieving filtration, density separation, hydrogenolysis, and photocatalysis have some undesirable sides such as low separation efficiency, high operating costs, and the generation of secondary pollutants.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic PET@ZnO Nanofibrous Membrane Extract from Waste Plastic for Efficient Water-In-Oil Emulsion Separation

Xiong

Tian

Yue

et al. 2022

Ind. Eng. Chem. Res.

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Waste plastics and oil pollution from industry and daily life have posed a serious threat to the environment, and it is the general trend to resource recycle them. Herein, this work presents a sustainable and environmentally friendly strategy for fabricating the superhydrophobic polyethylene terephthalate@ZnO nanofibrous membrane (PET@ZnO membrane) using Coca-Cola plastic bottles as raw materials, as well as its application in oil–water separation. In this strategy, the PET membranes were fabricated by combining the dual-solvent dissolution treatment and electrospinning processes. Then, the superhydrophobic PET@ZnO membrane with hierarchical architectures was fabricated by in situ growth of hierarchical ZnO nanopillars on the PET fiber surfaces, followed by hydrophobic modification. The obtained superhydrophobic PET@ZnO membrane shows an interconnected structure and superhydrophobic properties with a static water contact angle of 153 ± 2°. Moreover, the superhydrophobic PET@ZnO membrane has excellent repellence toward a corrosive solution, implying excellent chemical stability. The separation efficiency of various water-in-oil emulsions was higher than 99.6%, solely employing the gravity-driven process. Most importantly, there is no significant effect on the separation properties and still maintains a remarkable separation efficiency of almost 99.7%, while the separation flux was retained above 992 L m–2 h–1 after using the same membrane for 10 subsequent cycles. Therefore, this work not only provides a high-value-added strategy for resource recycling of waste plastic and oil but also gives an excellent membrane material with stable chemical properties for applications in wastewater treatment and chemical separation.

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“…However, the unidirectional liquid penetration properties of laminated membranes are limited by amphiphilic interfaces . Previous studies have indicated that the long-term presence of sweat on the surface of skin can affect human comfort, implying that unidirectional liquid penetration is an important property for wearable materials. , Therefore, it is necessary to fabricate wearable materials with thermal management and unidirectional liquid penetration properties for enhanced human thermal management applications.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Flexible Wearable Kevlar Aerogel Membranes with Breathable and Unidirectional Liquid Penetration Properties for Personal Thermal Management Application

Chen

Gan

Zhang³

et al. 2022

Ind. Eng. Chem. Res.

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Heat preservation, breathability, and unidirectional liquid penetration properties of wearable materials are vital for personal thermal management applications. Herein, flexible wearable Kevlar aerogel membranes with breathable and unidirectional liquid penetration properties were fabricated by underwater protection spraying of PDMS-trichlorotoluene onto one side of a Kevlar aerogel membrane and magnetron sputtering of Al nanoparticles on the other side of a Kevlar aerogel membrane PDMS (Al-KAM-PDMS). The results indicated that the PDMS side played an important role in improving the unidirectional liquid penetration property due to the asymmetric wettability property and an aerogel structure. To simulate unidirectional liquid penetration, simulated sweat can be penetrated from the PDMS side to the Al side of Al-KAM-PDMS within 14.4 s, implying excellent permeability. The Al side with high infrared reflectivity (72.77%) demonstrates that infrared radiation can be reflected back to the human body to achieve passive heating. An infrared image shows that Al-KAM-PDMS enables a simulated skin temperature decrease of 5 °C under a low temperature environment as compared to the Kevlar aerogel. The introduction of PDMS into Al-KAM-PDMS endows the membrane with high tensile stress of 5.60 MPa. In addition, Al-KAM-PDMS also possesses excellent breathability, showing its potential in wearable materials. Because of the exceptional unidirectional liquid penetration, breathability, and radiant heat insulation ability, Al-KAM-PDMS is a promising wearable material to help maintain a comfortable microclimate for individuals in outdoor environments.

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Laminated PET-based membranes with sweat transportation and dual thermal insulation properties

Cited by 36 publications

References 31 publications

Optimization of Compression and Flexural Properties of Masonry Veneers with Recycled PET-1

Optimization of Compression and Flexural Properties of Masonry Veneers with Recycled PET-1

Superhydrophobic PET@ZnO Nanofibrous Membrane Extract from Waste Plastic for Efficient Water-In-Oil Emulsion Separation

Multifunctional Flexible Wearable Kevlar Aerogel Membranes with Breathable and Unidirectional Liquid Penetration Properties for Personal Thermal Management Application

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