Radiation grafting by the mutual method of methacrylic acid/acrylonitrile (MAA/AN) onto Alhagi re... more Radiation grafting by the mutual method of methacrylic acid/acrylonitrile (MAA/AN) onto Alhagi residues in the presence of dimethylformamide (DMF) as a solvent is discussed. The factors affecting the radiation graft copolymerization were investigated. These included radiation dose, co-monomer composition and concentration. The grafted samples were characterized using FT-IR spectroscopy and scanning electron microscopy (SEM), as well as by the estimation of their nitrogen and carboxyl group contents. The grafted samples were then amidoximated by treatment with hydroxylamine hydrochloride in an alkaline medium. Such amidoximated poly(MAA/AN)-grafted Alhagi residues were utilized for the removal of Zn(II) ions from aqueous solution by adsorption and the factors affecting such adsorption processes were studied. These factors were the pH of the adsorbate solution, the adsorbent dosage, the contact time and the adsorption temperature. The adsorption data obeyed the Langmuir and Freundlich...
Fruit peels are a rich source of many substances, such as pectin. Extraction of natural thickenin... more Fruit peels are a rich source of many substances, such as pectin. Extraction of natural thickening agent (pectin) from fruit waste such as (orange and pomegranate peels) is an environmentally friendly alternative to commercial thickeners and is cheap for use in the printing of natural and synthetic fabrics, especially polyester and polyacrylic fabrics. Hexamine was used to treat the extracted pectin to make it appropriate for use in an alkali medium for printing cotton fabric. The results showed that the extracted and modified pectin have good rheological properties as well as bacterial resistance. Pectin is suitable for use in an acidic medium. All the printed samples with pectin and its modified synthetic dyes (reactive, acid, and disperse) exhibited good fastness towards washing and wet and dry rubbing. The light fastness of printed textiles was excellent (7), which is more than using alginate as a thickener (5). In both acidic and alkaline perspiration, the perspiration fastness...
Journal of Textiles, Coloration and Polymer Science, 2021
Plasma treatment for almost all synthetic and cellulosic textiles is considered to be one of thes... more Plasma treatment for almost all synthetic and cellulosic textiles is considered to be one of these physical technologies. Plasma treatment does not involve the treatment of hazardous chemicals and thus, compared to chemical treatment, there are no problems with effluents. The study demonstrated that most types of materials (natural synthetics and blends) with natural dye using pigment printing techniques can be printed using high-quality plasma radiation. It is an environmentally friendly process, fast-growing, and finds certain potential applications. The study claims that polyester plasma therapy and surface modifications can alleviate difficulties with printing. The study investigates the treatment of a PET fabric with an efficient plasma approach to activate the surface before cationization treatment.
Radiation grafting by the mutual method of methacrylic acid/acrylonitrile (MAA/AN) onto Alhagi re... more Radiation grafting by the mutual method of methacrylic acid/acrylonitrile (MAA/AN) onto Alhagi residues in the presence of dimethylformamide (DMF) as a solvent is discussed. The factors affecting the radiation graft copolymerization were investigated. These included radiation dose, co-monomer composition and concentration. The grafted samples were characterized using FT-IR spectroscopy and scanning electron microscopy (SEM), as well as by the estimation of their nitrogen and carboxyl group contents. The grafted samples were then amidoximated by treatment with hydroxylamine hydrochloride in an alkaline medium. Such amidoximated poly(MAA/AN)-grafted Alhagi residues were utilized for the removal of Zn(II) ions from aqueous solution by adsorption and the factors affecting such adsorption processes were studied. These factors were the pH of the adsorbate solution, the adsorbent dosage, the contact time and the adsorption temperature. The adsorption data obeyed the Langmuir and Freundlich...
Fruit peels are a rich source of many substances, such as pectin. Extraction of natural thickenin... more Fruit peels are a rich source of many substances, such as pectin. Extraction of natural thickening agent (pectin) from fruit waste such as (orange and pomegranate peels) is an environmentally friendly alternative to commercial thickeners and is cheap for use in the printing of natural and synthetic fabrics, especially polyester and polyacrylic fabrics. Hexamine was used to treat the extracted pectin to make it appropriate for use in an alkali medium for printing cotton fabric. The results showed that the extracted and modified pectin have good rheological properties as well as bacterial resistance. Pectin is suitable for use in an acidic medium. All the printed samples with pectin and its modified synthetic dyes (reactive, acid, and disperse) exhibited good fastness towards washing and wet and dry rubbing. The light fastness of printed textiles was excellent (7), which is more than using alginate as a thickener (5). In both acidic and alkaline perspiration, the perspiration fastness...
Journal of Textiles, Coloration and Polymer Science, 2021
Plasma treatment for almost all synthetic and cellulosic textiles is considered to be one of thes... more Plasma treatment for almost all synthetic and cellulosic textiles is considered to be one of these physical technologies. Plasma treatment does not involve the treatment of hazardous chemicals and thus, compared to chemical treatment, there are no problems with effluents. The study demonstrated that most types of materials (natural synthetics and blends) with natural dye using pigment printing techniques can be printed using high-quality plasma radiation. It is an environmentally friendly process, fast-growing, and finds certain potential applications. The study claims that polyester plasma therapy and surface modifications can alleviate difficulties with printing. The study investigates the treatment of a PET fabric with an efficient plasma approach to activate the surface before cationization treatment.
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Papers by Ahmed Hassabo