Preparation of aminated chitosan microspheres by one-pot method and their adsorption properties for dye wastewater

Meng, Jian; Cui, Jianlan; Yu, Siyuan; Jiang, Hui; Zhong, Congshan; Hongshun, Ji

doi:10.1098/rsos.182226

Cited by 18 publications

(14 citation statements)

References 39 publications

(53 reference statements)

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“…The band at 1025 cm -1 is assigned to β(1-4)glucoside bond which is characteristic of polysaccharide chitosan structure [12]. The FTIR spectrum of Cs-g-PAA with the subsequent shift from 1700 cm -1 to 1735 cm -1 (in pure PAA spectrum) is a shred of evidence that PAA was grafted on the chitosan, sharp intense peak at 1450 cm -1 , the disappearance of O-H bending peaks of primary alcohol around 1000 cm -1 on the Cs-g-PAA spectrum is an indication that primary alcohol in chitosan participated in the reaction [13].…”

Section: Resultsmentioning

confidence: 96%

Poly Acrylic-Chitosan Co-Polymer as Corrosion Inhibitor for Mild Steel in 0.5 M Hydrochloric Acid Solutions

Dalhatu

Modu²,

Mahmoud³

et al. 2022

EJCHEM

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Corrosion prevention has been one of the major concerns these days various methods have been adopted for corrosion prevention. However, the use of corrosion inhibitors has proven to be the easiest and cheapest method for corrosion prevention. But then most of the conventional inhibitors are expensive and toxic. Therefore the recent focus has been turned to developing non-toxic and cheap corrosion inhibitors. To achieve that a Polyacrylic acid was successfully grafted on chitosan by the thermal method using a reflux condenser. This copolymer was characterized by FTIR, TGA, and XPS. The corrosion inhibition performance of the grafted polymer was tested on mild steel in 0.5 M HCl under different conditions by gravimetric method. Mild steel coupon was analyzed using SEM to understand the effect of the inhibitor on the mild steel corrosion. The results were subjected to various adsorption isotherm models to understand the corrosion mechanism. The weight loss results show high inhibition efficiency of 86.50432 % for 24 hrs. Immersion time at 300 °C conditions. Data best fitted with Langmuir adsorption model with a good correlation coefficient of 0.9933.

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Section: Resultsmentioning

confidence: 96%

Poly Acrylic-Chitosan Co-Polymer as Corrosion Inhibitor for Mild Steel in 0.5 M Hydrochloric Acid Solutions

Dalhatu

Modu²,

Mahmoud³

et al. 2022

EJCHEM

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show abstract

“…But it will cause secondary injury or even death to the injured, so it is urgent to find a new hemostasis method. [ 126 ] So far, transcatheter arterial embolization (TAE) has become the standard method for the treatment of intracavitary hemorrhage, which can replace the surgical treatment. Biodegradable materials have good biocompatibility and no residue in vivo, so they are the first choice for TAE.…”

Section: Medical Applicationsmentioning

confidence: 99%

Preparation of Single, Heteromorphic Microspheres, and Their Progress for Medical Applications

Zhang

Wang

et al. 2020

Macro Materials & Eng

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Microspheres applied in medical applications experience explosive development in recent years, such as drug release, cell culture, and bone tissue engineering, etc. However, there are still some bottlenecks both in economy and technology lay that cannot be ignored. For instance, microsphere technology has not been used in cell culture widely because of its uneconomical cost; as the core of drug‐loaded microsphere, targeted microsphere technology is still not mature enough. Besides, the common microsphere fabrication methods: microfluidic or emulsion technology is difficult to guarantee high biocompatibility of microsphere due to utilization of photoinitiator, crosslinking agent, surfactant, and other substances. Therefore, gas‐shearing technology has been proposed to solve these above shortcomings successfully. This paper focuses more on heteromorphic microspheres rather than on single microspheres which begins with a minute introduction of microsphere preparation methods: microfluidic, coaxial electrospray, emulsion, and gas‐shearing technology. Then its medical applications: drug release, cell culture, bone tissue engineering, and hemostasis are discussed in detail. The disadvantages of fabrication methods and bottlenecks for medical applications at present are also stated. At the end, perspectives of microsphere development are put forward.

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“…Longer hydrocarbon chains in amino acids have often shown stronger corrosion mitigation [ 18 ]. As a result, adding more amino groups would enhance the electron density on the inhibitor molecule and, hence, the effectiveness of the inhibitor.…”

Section: Introductionmentioning

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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Preparation of aminated chitosan microspheres by one-pot method and their adsorption properties for dye wastewater

Cited by 18 publications

References 39 publications

Poly Acrylic-Chitosan Co-Polymer as Corrosion Inhibitor for Mild Steel in 0.5 M Hydrochloric Acid Solutions

Poly Acrylic-Chitosan Co-Polymer as Corrosion Inhibitor for Mild Steel in 0.5 M Hydrochloric Acid Solutions

Preparation of Single, Heteromorphic Microspheres, and Their Progress for Medical Applications

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

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