Antimicrobial finishing of regular and modified nylon‐6 fabrics

Shalaby, S. E.; Al-Balakocy, Naser Gad; Abdel‐Fatah, Osama M.; Elshafei, Ali M.

doi:10.1002/app.28628

Cited by 17 publications

(13 citation statements)

References 17 publications

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“…The regeneration was effi- ciently continued until the effluent concentration reaches 0.1 mg/l for the exhausted columns of copper using ~5 bv of regenerant for textile fiber beds at 0.15 l/h volumetric flow rate. Regeneration process for textile fiber beds was in agreement with the report issued by US EPA (10), which concludes that, for the cation exchange process firstly being converted to hydrogen then to the sodium form.…”

Section: Regeneration Of Cation Exchanger [Nylon→t(as)→grafted With Psupporting

confidence: 81%

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Assessment of the produced grafted nylon-6 non woven fabrics as ion-exchangers in wastewater treatment

Shalaby¹,

Al-Balakocy²,

El-Olaa³

et al. 2019

Desalination and Water Treatment

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The present work aims to assess: (a) The effectiveness of nylon nonwoven fabrics containing antimicrobial substance and grafted with PMAA, PDMAEMA and the blended fabric containing the above mentioned two types of nonwoven fabrics for metal ions (Cu 2+ , Pb 2+) and chromate (Cr 2 O 7) 2recovery from wastewater; (b) The amount of the ion-exchanger used; and (c) The desired quality of product water (breakthrough point) on the operating capacity of textile under investigation. The main objective of this study is to investigate the possibilities of the final effluent in order to comply with the National Environmental Regularity standard for wastewater discharge into the public sewage network. The Cu 2+ and Pb 2+ removal efficiency by the above mention textile types was studied by batch adsorption and column runs methods. It was found, in case of applying batch adsorption method that, the maximum removal of Cu 2+ (92%) takes place when nylon grafted with PMAA nonwoven fabric was used. The application of blended nonwoven grafted with PMAA and PDMAEMA fabric paves the way for high sorption (79%) of Cu 2+ from wastewater. The Cu 2+ removal with grafted with PDMAEMA nonwoven fabric slightly increased relative to control fabric. The maximum ion removal % of Pb 2+ (80-82%) was attained upon using all three types of grafted textiles, irrespective of the types of grafted polymer. Column method was used for determination of Cu 2+ and Pb 2+ removal efficiency by using the three types of grafted nylon-6 nonwoven fabrics. The copper and lead free effluents, breakthrough points and breakthrough capacities for the ion-exchangers under investigation were obtained Chromate removal efficiency by using Nylon non woven antimicrobial fabrics grafted with PDMAEMA was studied. For this anion exchanger fabric chromate free effluent, chromate breakthrough point and breakthrough capacity were also obtained.

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Section: Regeneration Of Cation Exchanger [Nylon→t(as)→grafted With Psupporting

confidence: 81%

“…Nylon fibers containing antimicrobial substrate (AS) was grafted with PMAA and PDMAEMA according to the method described by Shalaby et al [10].…”

Section: Grafting Processmentioning

confidence: 99%

Assessment of the produced grafted nylon-6 non woven fabrics as ion-exchangers in wastewater treatment

Shalaby¹,

Al-Balakocy²,

El-Olaa³

et al. 2019

Desalination and Water Treatment

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“…The carboxylic groups react with cationic agent through ionic interaction, which led to the immobilization of QAS on nylon-6 fabrics. The results can be explained by the following equations [43]. aureus, but the fibers grafted with the methacryloyloxyethyl trimethylammonium chloride did not [44].…”

Section: Quaternary Ammonium Saltsmentioning

confidence: 92%

“…The interactions between carboxylic end groups and quaternary ammonium salts could provide improved durable antimicrobial functions over repeated washing tests [42]. A simple, efficient, and practically applicable functional approach for improvement antimicrobial properties of nylon-6 fabrics and increase the washing durability of biofunctions was developed by Shalby etal [43]. This finishing approach is based on grafting the fabrics with methacrylic acid (MAA) to create additional carboxylic groups in nylon-6 macromolecules, followed by subsequent reaction with dimethyl -alklbenzyl ammonium chloride (DMABAC) solution under alkaline conditions.…”

Section: Quaternary Ammonium Saltsmentioning

confidence: 99%

Reviewon Recent Applications of Antimicrobial Agents for Polyamide and Polypropylene

Ramadan

Gawish

2012

Al-Azhar Bulletin of Science

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The growth of microbes on textiles during use and storage, will affects the wearer as well as the textile itself. The detrimental effects can be controlled by durable antimicrobial finishing of the textile using broad-spectrum biocides or by incorporating the biocide into synthetic fibers during extrusion. Consumers' attitude towards hygiene and active lifestyle has created a rapidly increasing market for antimicrobial textiles, which in turn has stimulated intensive research and development. This article is a review based on recent applications of antimicrobial agents to Polyamide (PA) and Polypropylene (PP) fabrics. The requirements for antimicrobial polyamide and polypropylene fibers such as, qualitative and quantitative evaluations of antimicrobial efficacy, the application methods of antimicrobial agents and some of the most recent developments in antimicrobial treatments of these fibers using various active agents ie silver, quaternary ammonium salts, polyhexamethylene biguanide, triclosan, chitosan, N-halamine compounds and fixation of antibiotics are discussed.

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“…Besides being cheap, it is non-toxic and has excellent mechanical strength [8]. The modification of nylon-6 microfibers with various monomers applying various grafting methods such as redox initiated grafting of hydroxyethyl methacrylate [9], methacrylic acid [10], glycidyl methacrylate [11], photografting of maleic anhydride [12], and chemical grafting with acrylamide in the presence of dibenzoyl peroxide [13].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Candida rugosa Lipase Immobilization on Nylon-6 Grafted and Aminated (Polyvinyl Benzyl Chloride) Microfibers

Halin

Al-Khatib

Salleh

et al. 2019

Bull. Chem. React. Eng. Catal.

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This paper demonstrates a simplified procedure for the preparation of a nylon-6 microfibers based support for the immobilization of Candida rugosa lipase via covalent attachment to enhance the stability and reusability of lipase. The preparation of the support was done by radiation induced graft copolymerization (RIGC) of vinyl benzyl chloride (VBC) onto nylon-6 microfibers followed by amination with ethanolamine to facilitate the immobilization of lipase. Fourier transfer infra red (FTIR) and scanning electron microscope (SEM) were used to study the chemical and physical changes following grafting, amination and immobilization. Response surface methodology (RSM) was applied for the optimization of lipase immobilization on the aminated microfibers. The optimization parameters were incubation time, pH, and lipase concentration. Moreover, this study investigated the effect of temperature, pH, and storage stability and reusability on the lipase in its immobilized and free forms. The developed model from RSM showed an R 2 value of 0.9823 and P-value < 0.001 indicating that the model is significant. The optimum temperatures for both immobilized and free lipases were 45 °C, whereas the best pH values for lipase activity were at pH 8 and pH 7, respectively. This study also identifies values for KM and Vmax for both immobilized and free lipase accordingly. Based on the results, immobilized lipase had significantly improved the stability and reusability of lipase compared to that in free forms. Copyright

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Antimicrobial finishing of regular and modified nylon‐6 fabrics

Cited by 17 publications

References 17 publications

Assessment of the produced grafted nylon-6 non woven fabrics as ion-exchangers in wastewater treatment

Assessment of the produced grafted nylon-6 non woven fabrics as ion-exchangers in wastewater treatment

Reviewon Recent Applications of Antimicrobial Agents for Polyamide and Polypropylene

Preparation and Candida rugosa Lipase Immobilization on Nylon-6 Grafted and Aminated (Polyvinyl Benzyl Chloride) Microfibers

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