Synthesis and Characterization of Chitosan Based Graft Copolymers with Binary Vinyl Monomers for Controlled Drug Release Application

Devi, Lalita; Sharma, Rajeev Kr.; Singh, Anirudh P.

doi:10.2174/2210303106666160220005331

Cited by 4 publications

(2 citation statements)

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“…The band at 1420 cm −1 correspond to symmetrical deformation of CH 2 and CH 3 [ 20 ]. The FTIR spectrum of Cs-g-L-arginine shows a C=O stretch at 1603 cm −1 , the subsequent shift from 1603 cm −1 to 1685 cm −1 (in pure L-arginine spectrum) indicating that L-arginine was grafted on the chitosan [ 21 ]. The appearance of some peaks from the pure L-arginine spectra is evidence that the grafting process took place.…”

Section: Resultsmentioning

confidence: 99%

L-Arginine Grafted Chitosan as Corrosion Inhibitor for Mild Steel Protection

et al. 2023

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Corrosion prevention has been a global phenomenon, particularly in metallic and construction engineering. Most inhibitors are expensive and toxic. Therefore, developing nontoxic and cheap corrosion inhibitors has been a way forward. In this work, L-arginine was successfully grafted on chitosan by the thermal technique using a reflux condenser. This copolymer was characterized by Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and X-ray diffraction (XRD). The corrosion inhibition performance of the composite polymer was tested on mild steel in 0.5M HCl by electrochemical methods. The potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) results were consistent. The inhibition efficiency at optimum concentration rose to 91.4%. The quantum chemical calculation parameters show good properties of the material as a corrosion inhibitor. The molecular structure of the inhibitor was subjected to density functional theory (DFT) to understand its theoretical properties, and the results confirmed the inhibition efficiency of the grafted polymer for corrosion prevention.

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Section: Resultsmentioning

confidence: 99%

L-Arginine Grafted Chitosan as Corrosion Inhibitor for Mild Steel Protection

et al. 2023

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“…The decreasing resources of fossil-based materials and the demand for natural, renewable, and environmentally friendly sustainable materials caused an increase in research related to biobased materials in recent years. [1][2][3] Nevertheless, biopolymer alternatives to synthetic materials have notable drawbacks, including poor water resistance, brittleness, incompatibility with other materials, and relatively weak mechanical and thermal properties. These limitations hinder their usage in the majority of industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Biomaterials via Simultaneous Grafting of Methyl Methacrylate and N‐Vinyl Pyrrolidone onto Chitosan

Yeğiner,

Ünlü,

Atici

2023

ChemistrySelect

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Chitosan is an antimicrobial biopolymer with significant potential for manufacturing biodegradable and biocompatible materials through further functionalization. These materials could be highly suitable for biomedical applications. In this study, in order to obtain better properties such as antimicrobial activity and adjustable hydrophilicity for biopolymer‐based applications, N‐vinylpyrrolidone (VP) and methylmethacrylate (MMA) were simultaneously grafted onto chitosan by a ceric‐initiated emulsion polymerization method. The chemical structure, thermal, morphological, and antimicrobial properties of the resulting materials were investigated. The results revealed that PMMA and PVP pendant groups were grafted onto the chitosan main chain. According to SEM measurements, the obtained materials had spherical shapes with diameters ranging from 250 to 950 nm for the components. In vitro antibacterial activity against both Gram‐positive and Gram‐negative bacteria was significantly improved in the obtained materials compared to pristine chitosan.

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