Lignocellulose coffee waste-based epoxy composites: effect of various treatment methods on composite properties

Özmeral, Nimet; Işık, Murat; Kalem, Merve Sogancioglu; Ahmetli, Gülnare

doi:10.1007/s10570-023-05105-y

Cited by 3 publications

(3 citation statements)

References 60 publications

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“…In the case of BRX and TNC, the surface wettability was further reduced (Figure 14e,f). The literature has reported that the surface wettability of materials depends on factors such as surface roughness and chemical composition 60,61 . Although the BRX surface is hydrophilic, 62 the small increase in CA values of BRX and TNC‐containing composites can be attributed to this.…”

Section: Resultsmentioning

confidence: 99%

Halogen‐free boron‐based hybrid system for enhancing flame retardancy, mechanical and thermal properties of epoxy

Kocaman,

Temiz,

Işık

et al. 2024

J of Applied Polymer Sci

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This study aims to increase the flame retardancy of epoxy‐based composites by using various flame retardants together with colemanite filler (CLM), which is a very mineral‐rich boron type. As a flame retardant, aluminum hydroxide (Al(OH)3) and boron‐containing compounds: borax (BRX) and natural minerals (tincal (TNC) and colemanite (CLM)), as well as barium metaborate (BaMB) synthesized by us were used. Scanning electron microscopy (SEM), x‐ray powder diffraction (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), contact angle (CA), and particle size analysis were used to characterize the composites and additives. All boron compounds increased the thermal stability of the composites. Except for the ER/CLM‐BaMB composite, other composites' surface contact angles were over 90°. In terms of both combustion and thermal properties, the best CLM‐BaMB‐Al(OH)3‐TNC ratio was determined as 15:5:15:15. The tensile strength, self‐extinguishing time, estimated and experimental Limited Oxygen Index (LOI) values for this composite were determined as 96 MPa, 65 s, 29.6%, and 25%, respectively. In addition, ANOVA was applied to determine the effect of hybrid filler type and different weight ratios on the mechanical properties of composites.

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Section: Resultsmentioning

confidence: 99%

Halogen‐free boron‐based hybrid system for enhancing flame retardancy, mechanical and thermal properties of epoxy

Kocaman,

Temiz,

Işık

et al. 2024

J of Applied Polymer Sci

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“…The thermal behavior and stability of materials are best understood with TGA and DTG. The thermal stability of adsorbents during applications at elevated temperatures is fundamental to their efficiencies. ,, …”

Section: Resultsmentioning

confidence: 99%

“…68 3.1. thermal stability of adsorbents during applications at elevated temperatures is fundamental to their efficiencies. 58,69,70 Figure 1 shows the TGA and DTG thermograms of AFZ. The TGA thermogram of AFZ has three regions of weight loss.…”

Section: Characterization Of Afz 311 Zeta Potential (Zp)mentioning

confidence: 99%

Exploring the Potential of Amino-Functionalized Zeolite Series/H₃PO₄-Biochar for Environmental Microplastic Removal

Omorogie,

Helmreich

2024

Ind. Eng. Chem. Res.

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The problem of microplastics (MPs) in the environment has been an emerging concern to the world in recent times. This is because the migration of MPs in the environment has been identified as deleterious culprits of the entire ecosystem and by extension may cause a decrease in life expectancy and quality of life in humans, fauna, and flora. This threat is seriously militating against the continuous existence and well-being of the entire ecosystem. Therefore, this research attempts to provide a solution to this global problem through the application of aminofunctionalized zeolite series/phosphoric acid-coffee waste biochar (AFZ) for the removal of polystyrene MPs in solutions, drinking water, and wastewater. Findings from this research showed that AFZ removed 4.78 to 4.85 mg g −1 of polystyrene MPs from solutions at 20 to 50 °C, respectively. This was achieved by a combination of chemisorption and physisorption mechanisms via hydrophobic interactions between the π-electrons of the sp 2 carbon orbital and π−π aromatic moieties of AFZ and the π-electrons of the polystyrene MPs and electrostatic attraction between AFZ and polystyrene MPs, respectively. Surface characterization of AFZ before and after its uptake of polystyrene MPs revealed that functional moieties such as C−H, C− O, C=C, N−H, Al−O, and Si−O was majorly responsible for the adsorption process. Hence, this research revealed that AFZ has potential to treat polystyrene MP-contaminated drinking water and wastewater.

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Effect of various aging conditions and treatment methods on thermal degradation of coffee waste/epoxy composites

Işık,

Özmeral,

Ahmetli

et al. 2024

Industrial Crops and Products

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Lignocellulose coffee waste-based epoxy composites: effect of various treatment methods on composite properties

Cited by 3 publications

References 60 publications

Halogen‐free boron‐based hybrid system for enhancing flame retardancy, mechanical and thermal properties of epoxy

Halogen‐free boron‐based hybrid system for enhancing flame retardancy, mechanical and thermal properties of epoxy

Exploring the Potential of Amino-Functionalized Zeolite Series/H₃PO₄-Biochar for Environmental Microplastic Removal

Effect of various aging conditions and treatment methods on thermal degradation of coffee waste/epoxy composites

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Lignocellulose coffee waste-based epoxy composites: effect of various treatment methods on composite properties

Cited by 3 publications

References 60 publications

Halogen‐free boron‐based hybrid system for enhancing flame retardancy, mechanical and thermal properties of epoxy

Halogen‐free boron‐based hybrid system for enhancing flame retardancy, mechanical and thermal properties of epoxy

Exploring the Potential of Amino-Functionalized Zeolite Series/H3PO4-Biochar for Environmental Microplastic Removal

Effect of various aging conditions and treatment methods on thermal degradation of coffee waste/epoxy composites

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Product

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About

Exploring the Potential of Amino-Functionalized Zeolite Series/H₃PO₄-Biochar for Environmental Microplastic Removal