Improvement of corrosion resistance, antimicrobial activity, mechanical and chemical properties of epoxy coating by loading chitosan as a natural renewable resource

El‐Fattah, M. Abd; Saeed, Ashraf M. El; Azzam, Ahmed M.; Abdul-Raheim, Abdul-Raheim M.; Hefni, Hassan H.H.

doi:10.1016/j.porgcoat.2016.09.002

Cited by 60 publications

(19 citation statements)

References 38 publications

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“…In this work, the chitosan polymer was extracted from Penaeus Japonicus exoskeleton by using a procedure displayed by Abd El-Fattah et al (2016). After washing of the fresh exoskeleton, it was dried under vacuum then, grinded to form powder.…”

Section: Chitosan Extractionmentioning

confidence: 99%

Industrial wastewater remediation using Hematite@Chitosan nanocomposite

Saad¹,

Azzam²,

El‐Wakeel³

et al. 2020

Egypt. J. of Aquatic Biolo. and Fish.

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The emission of heavy metals into the environment may be natural or anthropogenic (Taghipour and Mosaferi, 2013). Anthropogenic impacts including industrial discharge, domestic sewage, non-point source runoff and atmospheric precipitation are the main sources of toxic heavy metals that enter aquatic systems ﴾Langston et al., 1999﴿. Heavy metals are bio-accumulated in living organisms when taken up and stored more than softened (metabolized) or excreted (Gupta, 2013). Heavy metals toxicity has been reportable to be caused by completely different means; e.g., from contamination of drinking-water (Pb pipes), high air concentrations close to emission sources (thus enter into soil) or from food chain. The heavy metals are poisonous as the result of the bio-accumulation (Lenntech, 2012; Gupta, 2013 & Chibuike and Obiora, 2014). The Nile in Egypt facing major environmental problems associated with the dispersal or disposal of agricultural, industrial and urban wastes generated by human activities (Abdel-Mohsien and Mahmoud, 2015).

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Section: Chitosan Extractionmentioning

confidence: 99%

Industrial wastewater remediation using Hematite@Chitosan nanocomposite

Saad¹,

Azzam²,

El‐Wakeel³

et al. 2020

Egypt. J. of Aquatic Biolo. and Fish.

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“…As reported 12 , Chitosan was prepared from shrimp shells with 110 kDa of molecular weight and 85 % of the degree of deacetylation in our lab. Acrylic acid (AA) was purchased from Koch-Light Laboratories; potassium persulfate (K2S2O8) and acrylonitrile (AN) were obtained from Sigma-Aldrich and used after get rid of the inhibitor by using NaOH.…”

Section: Methodsmentioning

confidence: 98%

Chitosan-g-poly (acrylonitrile-co-acrylic acid) for wastewater treatment application

2020

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Chitosan is a biodegradable natural based polymer obtained from chitin (N-deacetylated derivative), the second most abundant polysaccharide after cellulose and soluble in most organic acids. Graft copolymerization of poly (acrylonitrile-co-acrylic acid) onto chitosan has been successfully carried out using potassium persulfate as an initiator in an aqueous medium. The PAN and PAA homopolymer formed during the reaction were removed from the Chitosan grafted copolymer by Soxhlet extraction using ethanol as the solvent. The prepared graft copolymerization was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) to confirm the formation of the copolymer. The prepared chitosan-g-copolymer at ratio 25:75% of AN-co-AA was treated with metal solutions containing cadmium ions, times and pH at room temperature. It[Am1] was found that the optimum condition was pH=5, Time 120min and dose of adsorbent 3 mg /L. The results revealed that the chitosan-g-copolymer prepared was excellent in removing the heavy metals than the copolymer alone. Hence, chitosan-g- poly- AN-co-AA could open the way for wastewater treatment. The thermal stability and the electrical conductivity for all prepared samples before and after grafing were measured. By studying the thermal stability at the different ratio of AN and AA in samples co1, co2, co3, it was found that the most thermal stability sample ratio is co3 due to increasing the ratio of AN. While in sample co1 with a high ratio of AA, the thermal stability decrease according to the fast decomposition of –COOH of acrylic acid. The conductivity was 3.85x10-7 which is more than the copolymer without chitosan, which increases the electron density of the copolymer through the end group effect. As the result of σ has a range 10-8 S/cm-1 10-6 S/cm-1so, all the prepared sample can be used as an electrostatic dissipation application.

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“…Toluene-2,4-diisocyanate (TDI) and dibutyltin dilaurate (DBTDL) were purchased from Sigma-Aldrich Ltd. Potassium permanganate (KMnO 4 …”

Section: Methodsmentioning

confidence: 99%

“…Epoxy resin (EP) is classi ed as one group of the most important thermosetting polymers characterized by high temperature resistance 1) , electrical insulation 2) , chemical resistance 3) , and anti-corrosion performance 4) . However, EP is generally brittle polymers with poor toughness and damping property, which restricts its application.…”

Section: Introductionmentioning

confidence: 99%

Properties and Morphologies of Epoxy Resin Based Composites Reinforced by Polyurethane and Graphene Oxide

et al. 2017

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Graphene oxide/polyurethane/epoxy resin nanocomposites containing various contents of graphene oxide were prepared by a sequential physical and polymeric technique. For the nanocomposites with a 0.3 mass% loading of graphene oxide, great improvement in tensile properties such as the elongation at break and toughness have been achieved by 45% and 87%, respectively. Meanwhile, the damping property of the nanocomposites is superior to that of the polyurethane/epoxy composite, with a 1 C loss for the glass transition temperature. Combined with the morphology analysis, it has been proved that the polyurethane prepolymer terminated with hydroxyl groups and graphene oxide exhibit synergistic effect on improving mechanical properties of neat epoxy resin.

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Improvement of corrosion resistance, antimicrobial activity, mechanical and chemical properties of epoxy coating by loading chitosan as a natural renewable resource

Cited by 60 publications

References 38 publications

Industrial wastewater remediation using Hematite@Chitosan nanocomposite

Industrial wastewater remediation using Hematite@Chitosan nanocomposite

Chitosan-g-poly (acrylonitrile-co-acrylic acid) for wastewater treatment application

Properties and Morphologies of Epoxy Resin Based Composites Reinforced by Polyurethane and Graphene Oxide

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