Phosphorylation of chitosan/HEMA interpenetrating polymer network prepared by γ-radiation for metal ions removal from aqueous solutions

Elbarbary, Ahmed M.; Ghobashy, Mohamed Mohamady

doi:10.1016/j.carbpol.2017.01.013

Cited by 58 publications

(11 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several chitosan derivatives have been designed using epichlorohydrin [19], glutaraldehyde [20], zeolites, etc. [21,22,23]. Based on previous research reports, the grafting of vinyl monomers on chitosan-based material has been investigated (i.e., poly vinyl chloride, poly vinyl alcohol, and poly(methacrylic acid)) [24,25,26].…”

Section: Introductionmentioning

confidence: 99%

Functional Chitosan Derivative and Chitin as Decolorization Materials for Methylene Blue and Methyl Orange from Aqueous Solution

et al. 2019

View full text Add to dashboard Cite

Dyes are classified as one of the major pollutants of water. They have negative impacts not only on environment but also on human health. In fact, wastewater that contains these harmful substances requires many types of treatments. Therefore, alternative methods and adsorption agents are needed. Herein, we propose to evaluate the decolorization of methylene blue (MB) and methyl orange (MO) as two models of soluble dyes from water using chitin and chitosan-graft-polyacrylamide. Furthermore, the applicability of these biomacromolecules as alternative adsorption agents, their sticking probability and desorption were also examined. Experimental parameters such as dye concentration, contact time, pH solution, adsorbent dosage and temperature were thoroughly examined for the grafted chitosan and chitin. The activation energy (Ea) and the thermodynamic variables (i.e., standard Gibb’s free energy (ΔG0), standard enthalpy (ΔH0), and standard entropy (ΔS0)) were determined using the Van’t Hoff and Arrhenius equations. The sticking probability (S*) model for MB and MO removal by chitin and the chitosan derivative demonstrated that both dyes were successfully removed under the proposed conditions. Desorption studies of MB and MO showed the reusability of both materials, suggesting their application for removing dyes from aqueous solution.

show abstract

Section: Introductionmentioning

confidence: 99%

Functional Chitosan Derivative and Chitin as Decolorization Materials for Methylene Blue and Methyl Orange from Aqueous Solution

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The second stage begins at approximately 270 C and is due to the decomposition of CHI (thermal and oxidative) as well as evaporation and elimination of volatile products. [32,33] It is clear that, as shown in Figure 3, grafting with HEMA increased the thermal stability of chitosan. The degradation temperatures of CHI-HEMA 1:1 and CHI-HEMA 1:2 graft copolymers were close to each other, but increased as the HEMA ratio increased.…”

Section: Thermogravimetric Analysismentioning

confidence: 87%

Synthesis, characterization, pH‐sensitive swelling and antimicrobial activities of chitosan–graft‐poly(hydroxyethyl methacrylate) hydrogel composites for biomedical applications

Torğut

YAZDIÇ

Gürler

2022

Polymer Engineering & Sci

View full text Add to dashboard Cite

In this paper, 2-hydroxyethyl methacrylate (HEMA) was graft copolymerized onto chitosan (CHI) at different ratios using a radical initiator. The grafted hydrogel composites were then characterized by attenuated total reflection Fourier transform ınfrared spectroscopy (ATR-FTIR) and thermo-gravimetric analysis (TGA). Swelling behavior of the hydrogels was investigated at different pH and different times. The antimicrobial activity of the chitosan-graft-HEMA (CHI-HEMA) against gram-negative bacteria and gram-positive bacteria was studied by the standard agar well diffusion assay method. The CHI-HEMA 1:1 and CHI-HEMA 1:2 showed an obvious antimicrobial effect against six test strains. The CHI-HEMA 1:1 and CHI-HEMA 1:2 exhibited a highly significant increase (p < 0.01) in diameter of the inhibition zones compared with the standard antibiotics. Furthermore, CHI-HEMA 1:1 presented the highest antimicrobial activity against all test strains with a significant difference (p < 0.01) compared with CHI-HEMA 1:2. Meanwhile, the decreasing order of the average sensitivity to CHI-HEMA 1:1 and CHI-HEMA 1:2 was observed to be S. marcescens > E. coli > S. aureus subsp. aureus > S. enteritidis > E. faecalis > E. aerogenes. These results indicate potential application of CHI-HEMA 1:1 and CHI-HEMA 1:2 graft hydrogels as a novel and efficient antimicrobial agent in biomedical fields.

show abstract

“…This technology uses gamma irradiation for the processing of polymers and has capability of upgrading the polymerization reaction even without adding chemical initiators or cross-linkers and requires only one step from preparation to sterilization. This technique has been used for preparing hydrogels of chitosan and 2-hydroxyethyl methacrylate by chemical modification through phosphorylation reaction and it has been used for the adsorption of Ca(II), Cu(II) and Zn(II) from their aqueous solutions [34].…”

Section: Radiation Polymerization Methodsmentioning

confidence: 99%

Interpenetrating polymer network as a pioneer drug delivery system: a review

et al. 2019

View full text Add to dashboard Cite

Interpenetrating polymer network (IPN) is an enterprising drug delivery system, comprising of two polymers with several advantages like stability, biocompatibility, high swelling capacity and biodegradability which plays an important function in targeted and controlled drug delivery. IPN acquired appreciable focus in the pharmaceutical sector mostly for the last few decades because of their utility in biomedical applications like tissue engineering and drug delivery at the target site at desired rate. For the past few years, different types of polymers obtained from natural or artificial sources have been used to prepare the IPN, resulting in improved properties; thus, IPN is considered in the category of the novel technologies demonstrating the superior performances as compared to the conventional technique. IPN development leads to the formation of dosage form with reduced side effects and prolonged drug action. The current topic includes IPN, types of IPN, mode of preparation, applications, delivery systems and list of polymers employed in the synthesis of IPN.

show abstract

Phosphorylation of chitosan/HEMA interpenetrating polymer network prepared by γ-radiation for metal ions removal from aqueous solutions

Cited by 58 publications

References 47 publications

Functional Chitosan Derivative and Chitin as Decolorization Materials for Methylene Blue and Methyl Orange from Aqueous Solution

Functional Chitosan Derivative and Chitin as Decolorization Materials for Methylene Blue and Methyl Orange from Aqueous Solution

Synthesis, characterization, pH‐sensitive swelling and antimicrobial activities of chitosan–graft‐poly(hydroxyethyl methacrylate) hydrogel composites for biomedical applications

Interpenetrating polymer network as a pioneer drug delivery system: a review

Contact Info

Product

Resources

About