Thermogravimetric Kinetics and High Fidelity Analysis of Crude Glycerol

Almazrouei, Manar; Samad, Tala El; Janajreh, Isam

doi:10.1016/j.egypro.2017.12.552

Cited by 22 publications

(9 citation statements)

References 12 publications

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“…The DSC of pure AX exhibited an endotherm (approximately 60-110 • C) due to the release of entrapped water and exotherm (at approximately 325 • C) corresponding with the decomposition of AX [39]. On the other hand, the DSC of blank AX films and GM-loaded films showed two endotherms at approximately 60-130 • C and 190-270 • C, which were attributed to presence of entrapped water and glycerol, respectively [13,40]. Moreover, the exothermic peak of the AX was also observed in DSC of AX films at approximately 325 • C. The DSC curves of the GM-loaded films were similar to those of the blank films with an additional endotherm due to the presence of GM at approximately 250 • C (melting), indicating the compatibility of GM with the components of the films.…”

Section: Scanning Electron Microscopymentioning

confidence: 98%

Development and Characterization of Hemicellulose-Based Films for Antibacterial Wound-Dressing Application

et al. 2020

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Hemicelluloses are biopolymers with versatile properties for biomedical applications. Herein, hemicellulose (arabinoxylan)-based antibacterial film dressings were prepared and characterized. Arabinoxylan was isolated from psyllium husk. Blank and gentamicin-loaded films were prepared by the solvent cast method using glycerol as the plasticizer. The appropriate composition of the films was obtained by varying the amounts of arabinoxylan, glycerol, and gentamicin. The films were found to be transparent, smooth, bubble-free, flexible, and easily peelable with 2% to 3% arabinoxylan. They had uniform thickness and swelled up to 60% of their initial size. The mechanical properties and water vapor transmission rate through the films were found to be suitable for wound-dressing application. Fourier transform infrared spectroscopy (FTIR) analysis confirmed drug–film compatibility. In an in vitro release study, more than 85% of the gentamicin was released from the films in 12 h. The antibacterial activities of the gentamicin-loaded films were found to be close to the standard gentamicin solution. The films were found to be cytocompatible in cell viability assay. These results suggested that hemicellulose-based films are promising materials for the dressing of infected wounds.

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Section: Scanning Electron Microscopymentioning

confidence: 98%

Development and Characterization of Hemicellulose-Based Films for Antibacterial Wound-Dressing Application

et al. 2020

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Section: Resultsmentioning

confidence: 99%

“…This was not observed either on the curve for pure lignin or for the non-modified samples (Figure 11). It should be also noted that for all samples, there is a single event representing the pyrolysis of glycerol observed in the range 130-260 • C [36]. Figures 12 and 13 show the transitions detected in the thermograms of pure lignin used in the chitosan/starch-based samples.…”

Section: Thermal Analysismentioning

confidence: 95%

Environmentally Friendly Melt-Processed Chitosan/Starch Composites Modified with PVA and Lignin

et al. 2021

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Chitosan/starch-based composites were prepared by thermomechanical processing as an alternative to the traditional solution method, with the aim of fabricating environmentally friendly materials on a larger scale. Different contents and types of lignin and poly(vinyl alcohol), PVA were incorporated into chitosan/starch compositions to improve their mechanical properties. It was demonstrated that the presence of both lignin and PVA increases the values of tensile strength and elongation at break of the composites. Moreover, it was observed that by the selection of a type of lignin and PVA, it was possible to tailor the internal microstructure of the samples. As observed in scanning electron microscope (SEM) micrographs, the introduction of lignin and PVA resulted in the formation of a smooth surface and homogeneous samples.

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“…Different lower case letter indicated that there was a significant difference (p ≤ 0.05) as determined by ANOVA and Tukey HSD post-hoc test. Thermal degradation analysis of crude glycerol showed remarkable weight loss at temperatures between 240°C and 255°C (Castelló et al 2009, Almazrouei et al 2017. Treatment of wood samples at elevated temperatures such as 180°C and 200°C provides an acidic condition and the existence of a high concentration of glycerol may accelerate the degradation of wood polymers, as shown by the increase in WL value.…”

Section: Mechanical Strength Of Treated Woodmentioning

confidence: 99%

Vacuum-heat treatment of Scots pine (Pinus sylvestrisL.) wood pretreated with propanetriol

Sivrikaya

Hosseinpourpia

Ahmed

et al. 2020

Wood Material Science & Engineering

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Thermogravimetric Kinetics and High Fidelity Analysis of Crude Glycerol

Cited by 22 publications

References 12 publications

Development and Characterization of Hemicellulose-Based Films for Antibacterial Wound-Dressing Application

Development and Characterization of Hemicellulose-Based Films for Antibacterial Wound-Dressing Application

Environmentally Friendly Melt-Processed Chitosan/Starch Composites Modified with PVA and Lignin

Vacuum-heat treatment of Scots pine (Pinus sylvestrisL.) wood pretreated with propanetriol

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