Synthesis and characterization of acrylic fibers-g-polyacrylamide

Çeli̇k, Meltem; Qudrat, Mohammad L.; Akyüz, Emel; Açık, Leyla

doi:10.1007/s12221-012-0145-5

Cited by 8 publications

(6 citation statements)

References 24 publications

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“…Based on the previous studies on the grafting of vinyl monomers to the PAN fiber [ 3 , 4 , 25 ] in the literature, the effect of Bz 2 O 2 concentration on the graft yield was preliminarily examined in the 3 × 10 −4 to 3 × 10 −3 M concentration range. It was determined in these trials that the graft yield took the highest value at 6 × 10 −4 M. Since this result is compatible with the grafting studies employing Bz 2 O 2 , 6 × 10 −4 M was also selected for graft polymerization of AA and its mixtures onto the PAN fiber in this study.…”

Section: Resultsmentioning

confidence: 99%

“…For this purpose, in addition to the strategies that target the hydrolysis and reduction of nitrile groups through enzymatic [ 15 , 16 ] and chemical [ 17 , 18 ] processes, the other chemical surface modifications were also carried out for adding desired properties to PAN, such as amidoximation [ 19 – 21 ], plasma processing [ 22 , 23 ], and photo-induced polymerization [ 24 ]. In particular, graft copolymerization of some vinyl monomers, such as acrylic acid, methacrylamide, acrylamide, and hydroxyethyl methacrylate, onto PAN fiber has recently been preferred to impart new properties or to improve its existing ones [ 2 , 4 , 5 , 25 ]. In addition, studies reporting the incorporation of metal nanoparticles into fibrous structures are also found noteworthy, in terms of having the advantage of the high surface area of the particles and enabling these fiber composites to be used for different purposes listed above (such as catalysts, sensing, biomedical applications).…”

Section: Introductionmentioning

confidence: 99%

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Investigation of antibacterial properties of polyacrylonitrile fibers modified by new functional groups and silver nanoparticles

OKAY¹,

Erdoğan²,

KARACA³

et al. 2022

Turkish Journal of Chemistry

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This work reports the surface modification of polyacrylonitrile (PAN) fibers by graft copolymerization to ensure the decoration of homogenous and dense Ag nanoparticles. Two facile and subsequent modification processes resulted in a PAN fiber composite with an intact fibrous structure, sufficiently conductive for antistatic application and antibacterial activity. In the first step, some chemically attractive monomers and monomer mixtures, such as acrylic acid (AA), AA-itaconic acid (AA-IA), AA-acrylamide (AA-AAm), were introduced to the fiber surface by grafting. The grafting process was evidenced by FTIR, 1 H-NMR, and SEM techniques. The second step aimed to form a chelate structure by Ag + ions with the coordination centers imparted to the PAN structure, and then, Ag nanoparticles (AgNPs) were decorated on the copolymer fiber surfaces by reducing with the NaBH 4 . The presence, distribution, and changes that occurred after the AgNPs decoration were also monitored by the SEM technique. It was obtained that the AgNPs could not be easily removed from the composites, which presented an appearance as if they were dyed with Ag. It was determined that the composite fibers gained a certain degree of conductivity with the surface resistivity value of 10 9 –10 2 Ω/cm 2 . The antibacterial activity of the composites against E. coli and S. aureus was examined by the zone of inhibition test compared to their detergent-washed samples.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of antibacterial properties of polyacrylonitrile fibers modified by new functional groups and silver nanoparticles

OKAY¹,

Erdoğan²,

KARACA³

et al. 2022

Turkish Journal of Chemistry

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“…Bacillus cereus, Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli (35218) were used to evaluate the antibacterial activity by disc diffusion method. 16,17 Nanocomposites were cut to make disc for measurement of antibacterial activity. In this method, inoculums of bacteria was prepared in 0.85% saline using McFarland standard and inoculated uniformly on nutrient agar plates.…”

Section: Examination Of Prepared Nanocompositesmentioning

confidence: 99%

Study on the synthesis and properties of polyacrylamide/Na-montmorillonite nanocomposites

Koç

Çeli̇k

Önal

et al. 2013

Journal of Composite Materials

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A series polyacrylamide/Na-montmorillonite nanocomposites was prepared by in situ free radical polymerization in aqueous medium using benzoyl peroxide (Bz2O2) as a radical initiator. To characterize the resultant nanocomposites, Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and thermogravimetric analysis techniques were used. The moisture retain, water uptake, antibacterial properties, BET specific surface area and specific nanopore volume of nanocomposites were determined. The X-ray diffraction pattern showed that the polyacrylamide was intercalated up to 60.0 mass% acrylamide concentration, and then montmorillonite layers exfoliated into the polyacrylamide matrix. The interlayer spacing ( d001) of the montmorillonite increased from 1.19 to 1.90 nm by intercalation. Transmission electron microscopy views showed that the Na-montmorillonite partially exfoliated in polyacrylamide. The nanocomposites exhibited better thermal stability than the pure polyacrylamide.

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“…Polyurethanes provide an obvious route to very-high-performance coatings and have long been used in water-repellent systems. However, polyurethanes could be made waterborne, and these have been used successfully in hydrophilic finishes (Celik et al , 2012; Hong et al , 2015). Aqueous polyurethane has been widely used in coating, because of its advantages in environmental pollution, fire safety and soil resistance, compared with solvent-based polyurethane (Mohanty and Krishnamurti, 1996; Chen and Chen, 1998, 1999).…”

Section: Introductionmentioning

confidence: 99%

Polyurethane cum hydrophobic finishing of acrylic fabrics for enhanced comfort characteristics

Raza

Anwar

Ahmad

et al. 2016

PRT

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Purpose The paper aims to improve the protective and comfort properties of both woven and knitted acrylic fabrics by applying a hybrid waterborne polyurethane/fluorocarbon hydrophobic finish. Design/methodology/approach In this study, it was found that the transportation of water from fabrics is one of the important textile parameters. To improve this property, a polyurethane-based finish (Dicrylan BSRN®) and an oil- and water-repellent finish (Oleophobol ZSR®) were applied by using the pad-dry-cure method. After applying the finishes, the resultant fabric samples were investigated for various textile properties. Findings The application of Oleophobol ZSR® increased the absorbency time, indicating that the fabric became hydrophobic, whereas the application of Dicrylan BSRN® finish improved the moisture management properties of the woven acrylic. The tensile strength of the woven acrylic fabric was not significantly affected by the application of these finishes. The contact angle of treated knitted fabrics increased and air permeability decreased with an increase in the concentration of Oleophobol ZSR®. Practical implications Moisture management is one of the crucial performance criteria in today’s apparel industry. Therefore, fluorochemicals are one of the major precursors used in water-repellent finishes and waterproof membranes in outdoor garments. Based on this fact, this research work focused on the textile sector, where moisture management is required. Originality/value This is the first report about the combined application of waterborne polyurethane and fluorochemical-based finishes on acrylic fabrics to tune their comfort and hydrophobic properties.

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Synthesis and characterization of acrylic fibers-g-polyacrylamide

Cited by 8 publications

References 24 publications

Investigation of antibacterial properties of polyacrylonitrile fibers modified by new functional groups and silver nanoparticles

Investigation of antibacterial properties of polyacrylonitrile fibers modified by new functional groups and silver nanoparticles

Study on the synthesis and properties of polyacrylamide/Na-montmorillonite nanocomposites

Polyurethane cum hydrophobic finishing of acrylic fabrics for enhanced comfort characteristics

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