Fabrication of functional silver loaded montmorillonite/polycarbonate with superhydrophobicity

Tian, Liangliang; Zhang, Yuanyuan; Mai, Yingying; Huang, Ran

doi:10.1016/j.clay.2015.10.016

Cited by 4 publications

(4 citation statements)

References 42 publications

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“…The effect is quite similar at other operational temperatures, for 40 °C and 68 °C heat source temperatures, the surface temperature reduction in the 66.7% polycarbonate–33.3% polyacrylic fabric is 27.6%, and 70.1% higher than the 0% polycarbonate–100% polyacrylic fabric. This is caused by the use of recycled polycarbonate fibre as an insertion in polyacrylic knitted fabric, since polycarbonate has a low thermal conductivity of 200 mW/m*K compared with polyacrylic yarn which has 310 mW/m*K of thermal conductivity [ 39 , 40 ]. The most substantial differences can be observed using a heat source temperature of 100 °C, where the knitted fabric thermal insulation is increased to 74.5% in the 66.7% polycarbonate–33.3% polyacrylic fabric.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Recycled Polycarbonate Fibre for Thermal Signature Reduction in Camouflage Textiles

et al. 2022

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Thermal signature reduction in camouflage textiles is a vital requirement to protect soldiers from detection by thermal imaging equipment in low-light conditions. Thermal signature reduction can be achieved by decreasing the surface temperature of the subject by using a low thermally conductive material, such as polycarbonate, which contains bisphenol A. Polycarbonate is a hard type of plastic that generally ends up in dumps and landfills. Accordingly, there is a large amount of polycarbonate waste that needs to be managed to reduce its drawbacks to the environment. Polycarbonate waste has great potential to be used as a material for recycled fibre by the melt spinning method. In this research, polycarbonate roofing-sheet waste was extruded using a 2 mm diameter of spinnerette and a 14 mm barrel diameter in a 265 °C temperature process by using a lab-scale melt spinning machine at various plunger and take-up speeds. The fibres were then inserted into 1 × 1 rib-stitch knitted fabric made by Nm 15 polyacrylic commercial yarns, which were manufactured by a flat knitting machine. The results showed that applying recycled polycarbonate fibre as a fibre insertion in polyacrylate knitted fabric reduced the emitted infrared and thermal signature of the fabric.

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Section: Resultsmentioning

confidence: 99%

Fabrication of Recycled Polycarbonate Fibre for Thermal Signature Reduction in Camouflage Textiles

et al. 2022

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“…Tian et al incorporated Ag/MMT into polycarbonate (PC); after that, the prepared samples were treated with 1,4-dimethylbenzene in order to obtain functional Ag/MMT/PC composite with super hydrophobicity. The combination of inorganic materials and polymers leads to excellent bio-and catalytic activity on the degradation reaction of methylene blue [201]. Roy et al developed Ag/MMT by cation exchange method, and subsequent acid treatment, obtaining spherical AgNPs on MMT.…”

Section: Structural Investigation Acid Treatment and Adsorption Study...mentioning

confidence: 99%

A Review on Montmorillonite-Based Nanoantimicrobials: State of the Art

et al. 2023

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One of the crucial challenges of our time is to effectively use metal and metal oxide nanoparticles (NPs) as an alternative way to combat drug-resistant infections. Metal and metal oxide NPs such as Ag, Ag2O, Cu, Cu2O, CuO, and ZnO have found their way against antimicrobial resistance. However, they also suffer from several limitations ranging from toxicity issues to resistance mechanisms by complex structures of bacterial communities, so-called biofilms. In this regard, scientists are urgently looking for convenient approaches to develop heterostructure synergistic nanocomposites which could overcome toxicity issues, enhance antimicrobial activity, improve thermal and mechanical stability, and increase shelf life. These nanocomposites provide a controlled release of bioactive substances into the surrounding medium, are cost effective, reproducible, and scalable for real life applications such as food additives, nanoantimicrobial coating in food technology, food preservation, optical limiters, the bio medical field, and wastewater treatment application. Naturally abundant and non-toxic Montmorillonite (MMT) is a novel support to accommodate NPs, due to its negative surface charge and control release of NPs and ions. At the time of this review, around 250 articles have been published focusing on the incorporation of Ag-, Cu-, and ZnO-based NPs into MMT support and thus furthering their introduction into polymer matrix composites dominantly used for antimicrobial application. Therefore, it is highly relevant to report a comprehensive review of Ag-, Cu-, and ZnO-modified MMT. This review provides a comprehensive overview of MMT-based nanoantimicrobials, particularly dealing with preparation methods, materials characterization, and mechanisms of action, antimicrobial activity on different bacterial strains, real life applications, and environmental and toxicity issues.

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“…The immobilization of silver on montmorillonite as an antibacterial agent is predominant due to the antibacterial effects being very successful against several pathogenic bacteria. Manqing et al fabricated biocompatible nanomaterials with effective antibacterial activities countering two types of pathogenic bacteria: Gram-positive and Gram-negative [178]. As the result, it was noted that the bactericidal characteristic of the AgNPs-montmorillonite composite was solely caused by the existence of the silver nanoparticles on the montmorillonite sheets (Figure 11i), and this was caused by the electrostatic forces inhibiting the growth of the bacteria.…”

Section: Use Of Montmorillonite-supported Metallic Species As Antibac...mentioning

confidence: 99%

“…Several studies have exhibited that montmorillonite, as well as zeolites and layered silicates alone did not present any antibacterial activity [42,101,178], unless some antibacterial agents were absorbed or incorporated onto their surfaces. Usually, these solids serve as a carrier for the dispersion of particles, as well as the adsorption of microorganisms due to their high exchange capacity.…”

Section: The Antibacterial Mechanismsmentioning

confidence: 99%

Recent Advances in Antibacterial Metallic Species Supported on Montmorillonite Clay Mineral: A Review

Mokhtar,

Ahmed,

Asli

et al. 2023

Minerals

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This review provides information on the latest advances in inorganic materials with antimicrobial properties based on a metallic species immobilized on the clay mineral montmorillonite realized between the years 2015 and 2023. This class has shown many promising results compared to certain organic agents. Montmorillonite in natural and/or modified forms is a good platform for the storage and release of metallic species, and several researchers have worked on this mineral owing to its cation exchange capacity, low cost, biocompatibility, and local availability. The preparation methods and the properties such as the antibacterial, antifungal, and toxicological activities of this mineral are discussed. The main characteristics of this antibacterial class for the elimination of pathogenic bacteria were examined and the known weak points of its antimicrobial application are discussed, leading to suggestions for further research.

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Fabrication of functional silver loaded montmorillonite/polycarbonate with superhydrophobicity

Cited by 4 publications

References 42 publications

Fabrication of Recycled Polycarbonate Fibre for Thermal Signature Reduction in Camouflage Textiles

Fabrication of Recycled Polycarbonate Fibre for Thermal Signature Reduction in Camouflage Textiles

A Review on Montmorillonite-Based Nanoantimicrobials: State of the Art

Recent Advances in Antibacterial Metallic Species Supported on Montmorillonite Clay Mineral: A Review

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