Interfacial Colloidal Performance and Adhesive Strength of an Environmentally Friendly Cellulose-microcrystal-based Adhesive Substance
Zhexu Xi,
Jianfei Feng,
Xiaolin Lu
Issue:
Volume 6, Issue 4, December 2020
Pages:
24-33
Received:
16 December 2020
Accepted:
29 December 2020
Published:
12 January 2021
Abstract: As one of the high-value and environmentally friendly chemical products, cellulose-based adhesive substance has been widely developed recently due to its extraordinary adhesion, interfacial flowability and high stability, along with low-impact side effects, outstanding degradability and biocompatibility. Also, microcrystalline-shaped cellulose has been fully exploited in functinalizing modification engineering. To eliminate the gap in application of cellulose-ether-based adhesion, we fabricated a new category of optimized cellulose sulfate product based on a system of analysis of key experimental factors: solvent pretreatment, degree of esterification, type and morphology of cellulose. Additionally, we focused on an all-round family of performance test of our product, containing characterization of structural and morphological features, test of water-based properties and inspection of adhesion behaviour. Within, the effect of adhesive strength in various solvents and under various conditions have been highlighted. The whole result shows a generally feasible synthetic approach and splendid performance as a novel green adhesive. The optimal design and synthesis of cellulose sulfate is verified to be eco-friendly, easy for optimization and greatly reproducible. Also, the product is shown to have tiptop viscosity, great adhesive strength, and colloidal potential like film forming due to the cross-linking network in the water-based environment. Finally, the product are demonstrated to be outstanding and widely applicable in mechanical strength. Specifically, it shows strong adhesion on different materials (metal, timber and glass) and tunability related to the kinds of additives. The addition of metallic salts and polymeric amine can evidently boost its adhesive strength. Overall, optimal analysis of cellulose sulfate adhesive on a microscale has forecasted great potential in low-carbon, fine-tunable, adhesive-related industry.
Abstract: As one of the high-value and environmentally friendly chemical products, cellulose-based adhesive substance has been widely developed recently due to its extraordinary adhesion, interfacial flowability and high stability, along with low-impact side effects, outstanding degradability and biocompatibility. Also, microcrystalline-shaped cellulose has ...
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Expression Analysis of the Candida albicans KEX2, SAP1, CDR1 and LIP1genes Influenced by Biosynthesized Silver Nanoparticles
Muhsen Mohamed Faraj,
Kamil Mutashar Al-Jobori
Issue:
Volume 6, Issue 4, December 2020
Pages:
34-44
Received:
28 October 2020
Accepted:
26 November 2020
Published:
18 January 2021
Abstract: Present investigation deals with the synthesis of silver nanoparticles (AgNPs) from Lycopersicon esculentum L. through simple and eco-friendly method and validation the capacity of nanoparticles to inhibit the virulence gene expression in Candida albicans. The nanoparticles thus obtained from Lycopersicon esculentum L. have been analysed and characterised by Scanning Electron Microscopy (SEM), UV-Vis spectrophotometer, X-ray diffraction (XRD) and Fourier Transform Infra-red Spectroscopy (FTIR) techniques. The average diameter of the AgNPs, whose morphology has been determined by SEM, was found to be 9.58 to 72.69 nm. The UV-vis spectrophotometer show peak located of silver nanoparticles at 340 nm. X-ray diffraction analysis also showed functional structure and pattern of silver nanoparticles. The FT-IR spectra indicated the role of different functional groups of reducing agent and silver nanoparticles. AgNPs at concentrations of 15 and 25% significantly downed expression of Sap1, LIP1 and Kex2, but had no effect on the expression of CDR1 gene. The findings of current study showed that tomato extract could be used as a green chemistry approach to produce AgNPs. It downed expression of Sap1, LIP1 and Kex2 genes, whereas had no effect on the expression of CDR1 gene, that it appears needs higher concentrations of AgNPs to inhibit its gene expression.
Abstract: Present investigation deals with the synthesis of silver nanoparticles (AgNPs) from Lycopersicon esculentum L. through simple and eco-friendly method and validation the capacity of nanoparticles to inhibit the virulence gene expression in Candida albicans. The nanoparticles thus obtained from Lycopersicon esculentum L. have been analysed and charac...
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