Grafting emulsion polymerization of glycidyl methacrylate onto leather by chemical initiation systems

Shaffei, K. A.; Moustafa, A. B.; Mohamed, Wael S.

doi:10.1002/app.28404

Cited by 12 publications

(6 citation statements)

References 17 publications

(18 reference statements)

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“…The desired amount of the monomer with the selected composition ratio (50/50 MMA/EA) was added and well emulsified for 30 min at room temperature using a mechanical stirrer (500 rpm) in the presence of 1% or 3% of ZnO, Ag, or cellulose NPs, separately. Then, the mixture was heated to 80 • C [44]. Next, the redox initiation system composed of potassium persulphate (PPS) (0.27 g) and sodium bisulphite (SBS) (0.416 g) dissolved in 50 mL of distilled water was added dropwise to the reaction mixture under continuous stirring for 3 h.…”

Section: Preparation Of Nanocompositesmentioning

confidence: 99%

Evaluation of the Mechanical, Physical, and Anti-Fungal Properties of Flax Laboratory Papersheets with the Nanoparticles Treatment

et al. 2020

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In the present study, novel mixed additives of Chitosan or Paraloid B-72 combined with nanoparticles (NPs) of Ag, ZnO, or cellulose (NCL) were examined for their effects on the mechanical, optical, and fungal inhibition properties of the papersheets produced. The highest tensile, tear, and burst indices of the papersheets were observed for flax pulp treated with additives of Paraloid B-72 + ZnO NP (1%), Chitosan + ZnO NP (3%), and Chitosan + NCL (3%) at levels of 59.93 N·m/g, 18.45 mN·m2/g, and 6.47 kPa·m2/g, respectively. Chitosan + ZnO NP (1%) added to flax pulp showed the highest fungal mycelial inhibition (FMI) (1.85%) against Aspergillus flavus. Chitosan + Ag NP (1%) exhibited the highest FMI percentage (11.48%) when added to pulp against A. terreus. Pulp treated with Paraloid B-72 + Ag NP (1%) exhibited the highest activity against Stemphylium solani with an FMI value of 3.7%. The results indicate that the technological properties of the papersheets were enhanced with the addition of novel mixtures to the pulp.

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Section: Preparation Of Nanocompositesmentioning

confidence: 99%

Evaluation of the Mechanical, Physical, and Anti-Fungal Properties of Flax Laboratory Papersheets with the Nanoparticles Treatment

et al. 2020

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“…The relationship between the rates of grafting of AA onto PA6 and PA6/CaO with various concentrations of SLES as an emulsifier for was studied and illustrated in figures 2 in the range of 0.5 to 2.5% at a constant monomer concentration of 15% and constant initiator of 1x10 -3 (mol/l) at 60℃ for 4hr grafting time. The obtained data indicated that the rate of grafting of AA increased with an increasing the emulsifier concentration where the emulsifier powers were found to be highest at the concentration 2.5% , this can be attributed to the fact that an emulsifier plays an important role in increasing the swellability of nanofibers; consequently, increase the emulsification of the AA monomer led to form a homogeneous, miscible solution suitable for carrying out grafting polymerization more facilitation and penetration of free radicals inside the fiber backbone take place [28].…”

Section: Effect Of Emulsifier Concentrationmentioning

confidence: 95%

Preparation, Characterization and Water Treatment Application of Electro-spun Polyamide 6 Nanocomposite

Ahmed¹,

Mohamed²,

Hamouly

et al. 2022

Egypt. J. Chem.

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This study aims to synthesize Polyamide 6 nanofibrous membrane of low molecular weight (PA6) using an electrospinning technique with a concentration of 30% (wt/v) and Polyamide 6 nanofibers containing calcium oxide nanoparticles (PA6/CaO), which were obtained with a CaO concentration of 1% (wt/wt). Scanning electron microscopy (SEM) was used to examine the structure of the electrospun nanofibers, which showed smooth and continuous electrospun nanofibers with a nanofibrous diameter of around 53 nm, and CaO nanoparticles were distributed through the nanofibers with a slight increase in the nanofibrous diameter.The surfaces of the obtained PA6 and PA6/CaO nanofibers were modified by grafting polymerization with acrylic acid AA, with various synthetic parameters such as reaction temperature, monomer concentration, initiator concentration, and emulsifier concentration. The obtained results show that as the concentrations of monomer, initiator, and temperature increased, the grafting yield increased at first, then decreased, but it kept increasing as the emulsifier concentration was increased. The characterization of the obtained graft nanofibers was carried out using Fourier Transform Infrared Spectroscopy (FT-IR), Thermo Gravimetric Analysis (TGA), and Differential Scanning Calorimetry (DSC). The effects of pH, initial concentration, temperature, and contact time on the removal of heavy metals (Co 2+ , Cr 6+ ) from water solution were investigated, and it was observed that a polyamide6/CaO nanofibrous membrane grafted with AA could adsorb Co 2+ more than Cr 6+ . While the optimum conditions for the removal were observed at an initial concentration of 10 ppm, pH 5 at 150 min under 30 °C.

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“…The dyeing processes time for 1.5h at 80 o C. After dyeing some mordents, such as alum, Copper sulfate and Iron III chloride were added in concentration (50 g L-1) to give a final dye bath concentration of 2.5 g L-1 or 5 g L-1 mordant. The final step is washing bath to remove the unfixed dyestuff (5 min at room temperature, LR 1:20) [16][17][18].…”

Section: Dyeing Proceduresmentioning

confidence: 99%

A comparative study of the impact of Beva 371 and Nano Vinyl Acetate derivatives on Textiles properties for Historical Textiles Conservation, Practical Application

Eldeen

Mohamed²,

Saad

et al. 2019

Egypt. J. Chem.

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H ISTORICAL textiles in museums are exposed to various processes of deterioration.Therefore, adhesives and polymers are used to fix and strengthen weak textiles. One the long term these adhesives are prone to stiffness, weakness, discoloration, and rigidity among other factors. Historical textiles exposed in museum to processes of deterioration factors. Therefore, adhesives and polymers used to fix and strengthen weak textiles. These adhesives are prone to stiffness, weakness, and color change and rigid after long term and other damage. Therefore, this research attempts to use nanomaterials to improve the properties of polymers used in historical textiles conservation. Results of the physical, chemical and optical properties of the Beva 371 and Nano-Vinyl acetate derivatives and were applied to fix and strengthen historical textiles. The dyed wool fabrics by natural dyes treated with Beva 371 and Nano Vinyl acetate derivatives adhesive. Accelerated thermal ageing was done of treated wool fabrics. A close examination and tests were done by using SEM-EDX, FTIR, Tensile strength , Elongation, change of colors (CIE L*a*b*) coordinates. The final step is to apply the Nano-Vinyl acetate derivatives on Historical Coptic Textiles. Scientific examinations, the stability of dyes and fibers, mechanical and chemical cleaning processes, fixing and strengthening of historical textiles on new support by using Nano-Vinyl acetate derivatives was done. The article presents, for the first time, interesting and important results of Beva 371 and Nano-Vinyl acetate derivatives and their application on historical textiles.

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Grafting emulsion polymerization of glycidyl methacrylate onto leather by chemical initiation systems

Cited by 12 publications

References 17 publications

Evaluation of the Mechanical, Physical, and Anti-Fungal Properties of Flax Laboratory Papersheets with the Nanoparticles Treatment

Evaluation of the Mechanical, Physical, and Anti-Fungal Properties of Flax Laboratory Papersheets with the Nanoparticles Treatment

Preparation, Characterization and Water Treatment Application of Electro-spun Polyamide 6 Nanocomposite

A comparative study of the impact of Beva 371 and Nano Vinyl Acetate derivatives on Textiles properties for Historical Textiles Conservation, Practical Application

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