PEG-Functionalized Chitosan: A Biological Macromolecule as a Novel Corrosion Inhibitor

Vandana Srivastava; Dheeraj S. Chauhan; Prathamesh G. Joshi; Viruthasalam Maruthapandian; Ahmad A. Sorour; Mumtaz A. Quraishi

doi:10.1002/slct.201701949

PEG-Functionalized Chitosan: A Biological Macromolecule as a Novel Corrosion Inhibitor

Vandana Srivastava^*, Dheeraj S. Chauhan, Prathamesh G. Joshi, Viruthasalam Maruthapandian, Ahmad A. Sorour, Mumtaz A. Quraishi

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

101 Scopus citations

Abstract

In the present work, we have synthesized chemically functionalized chitosan via cross-linking with polyethylene glycol (PEG) and used it as a novel green corrosion inhibitor. This is the first study reporting the use of chitosan-PEG (CS-PEG) as corrosion inhibitor for mild steel in 1 M HCl. The study was performed using weight loss method, electrochemical measurements, surface morphology (AFM) and quantum chemical investigation. The maximum corrosion inhibition efficiency of 93.9% was obtained at a concentration of 200 mgL⁻¹. The inhibitor was found to obey Langmuir adsorption isotherm and exhibited both physical and chemical adsorption. Electrochemical impedance spectroscopy (EIS) showed an increase in the polarization resistance which supported the adsorption and inhibition behavior. Tafel data showed a mixed type behavior with cathodic predominance. The data of quantum chemical calculations supported the experimental findings.

Original language	English
Pages (from-to)	1990-1998
Number of pages	9
Journal	ChemistrySelect
Volume	3
Issue number	7
DOIs	https://doi.org/10.1002/slct.201701949
State	Published - 21 Feb 2018

Bibliographical note

Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

Computational Chemistry
Corrosion inhibitors
Green Chemistry
Impedance spectroscopy
Polymers

ASJC Scopus subject areas

General Chemistry

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10.1002/slct.201701949

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title = "PEG-Functionalized Chitosan: A Biological Macromolecule as a Novel Corrosion Inhibitor",

abstract = "In the present work, we have synthesized chemically functionalized chitosan via cross-linking with polyethylene glycol (PEG) and used it as a novel green corrosion inhibitor. This is the first study reporting the use of chitosan-PEG (CS-PEG) as corrosion inhibitor for mild steel in 1 M HCl. The study was performed using weight loss method, electrochemical measurements, surface morphology (AFM) and quantum chemical investigation. The maximum corrosion inhibition efficiency of 93.9% was obtained at a concentration of 200 mgL−1. The inhibitor was found to obey Langmuir adsorption isotherm and exhibited both physical and chemical adsorption. Electrochemical impedance spectroscopy (EIS) showed an increase in the polarization resistance which supported the adsorption and inhibition behavior. Tafel data showed a mixed type behavior with cathodic predominance. The data of quantum chemical calculations supported the experimental findings.",

keywords = "Computational Chemistry, Corrosion inhibitors, Green Chemistry, Impedance spectroscopy, Polymers",

author = "Vandana Srivastava and Chauhan, {Dheeraj S.} and Joshi, {Prathamesh G.} and Viruthasalam Maruthapandian and Sorour, {Ahmad A.} and Quraishi, {Mumtaz A.}",

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T2 - A Biological Macromolecule as a Novel Corrosion Inhibitor

AU - Srivastava, Vandana

AU - Chauhan, Dheeraj S.

AU - Joshi, Prathamesh G.

AU - Maruthapandian, Viruthasalam

AU - Sorour, Ahmad A.

AU - Quraishi, Mumtaz A.

PY - 2018/2/21

Y1 - 2018/2/21

N2 - In the present work, we have synthesized chemically functionalized chitosan via cross-linking with polyethylene glycol (PEG) and used it as a novel green corrosion inhibitor. This is the first study reporting the use of chitosan-PEG (CS-PEG) as corrosion inhibitor for mild steel in 1 M HCl. The study was performed using weight loss method, electrochemical measurements, surface morphology (AFM) and quantum chemical investigation. The maximum corrosion inhibition efficiency of 93.9% was obtained at a concentration of 200 mgL−1. The inhibitor was found to obey Langmuir adsorption isotherm and exhibited both physical and chemical adsorption. Electrochemical impedance spectroscopy (EIS) showed an increase in the polarization resistance which supported the adsorption and inhibition behavior. Tafel data showed a mixed type behavior with cathodic predominance. The data of quantum chemical calculations supported the experimental findings.

AB - In the present work, we have synthesized chemically functionalized chitosan via cross-linking with polyethylene glycol (PEG) and used it as a novel green corrosion inhibitor. This is the first study reporting the use of chitosan-PEG (CS-PEG) as corrosion inhibitor for mild steel in 1 M HCl. The study was performed using weight loss method, electrochemical measurements, surface morphology (AFM) and quantum chemical investigation. The maximum corrosion inhibition efficiency of 93.9% was obtained at a concentration of 200 mgL−1. The inhibitor was found to obey Langmuir adsorption isotherm and exhibited both physical and chemical adsorption. Electrochemical impedance spectroscopy (EIS) showed an increase in the polarization resistance which supported the adsorption and inhibition behavior. Tafel data showed a mixed type behavior with cathodic predominance. The data of quantum chemical calculations supported the experimental findings.

KW - Computational Chemistry

KW - Corrosion inhibitors

KW - Green Chemistry

KW - Impedance spectroscopy

KW - Polymers

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DO - 10.1002/slct.201701949

M3 - Article

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SN - 2365-6549

VL - 3

SP - 1990

EP - 1998

JO - ChemistrySelect

JF - ChemistrySelect

IS - 7

ER -

PEG-Functionalized Chitosan: A Biological Macromolecule as a Novel Corrosion Inhibitor

Abstract

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Keywords

ASJC Scopus subject areas

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