In-situ synthesis of hydrophobic SiO2-PMMA composite for surface protective coatings: Experimental and quantum chemical analysis

A. Madhan Kumar; Sanjay S. Latthe; P. Sudhagar; I. B. Obot; Zuhair M. Gasem

doi:10.1016/j.polymer.2015.09.030

In-situ synthesis of hydrophobic SiO₂-PMMA composite for surface protective coatings: Experimental and quantum chemical analysis

A. Madhan Kumar, Sanjay S. Latthe, P. Sudhagar, I. B. Obot, Zuhair M. Gasem^*

^*Corresponding author for this work

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

41 Citations (Scopus)

Abstract

The extreme commercial demand for polymer based protective coatings has triggered in a recent propagation of methods expected to impart high corrosion resistance and numerous such methods involve wet-based processing of hydrophobic polymers. This work explores the feasibility of hydrophobic SiO₂- poly (methyl methacrylate) (PMMA) coatings towards surface protecting applications where the undesired corrosion issue takes place on the host surface. Hydrophobic SiO₂-PMMA composite coating is achieved on stainless steel (SS) substrate for different time duration of dip coating using pre-synthesized SiO₂-PMMA sol by sol-gel method. Coating duration of SiO₂-PMMA influences PMMA species filling at SiO₂ microstructures which relay on wettability behaviour of SS surface switch from Wenzel state to Cassie-Baxter state. The underlying mechanism of water repellence on SiO₂-PMMA composite surface is examined using quantum chemical calculations. It clearly demonstrates that the high dipole moment of SiO₂-MMA pair (5.63 Debye), than H₂O (1.85 Debye) beneficially displaces water from steel and perhaps enhances the physical adsorption between steel greatly improved the corrosion resistance.

Original language	English
Pages (from-to)	79-86
Number of pages	8
Journal	Polymer
Volume	77
DOIs	https://doi.org/10.1016/j.polymer.2015.09.030
Publication status	Published - 23 Oct 2015

Keywords

Polymer-matrix composites (PMCs)
Quantum chemical modelling
Surface protection

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

Access to Document

10.1016/j.polymer.2015.09.030

Cite this

@article{8e63ef62b31b45bba35af696aa30fc6a,

title = "In-situ synthesis of hydrophobic SiO2-PMMA composite for surface protective coatings: Experimental and quantum chemical analysis",

abstract = "The extreme commercial demand for polymer based protective coatings has triggered in a recent propagation of methods expected to impart high corrosion resistance and numerous such methods involve wet-based processing of hydrophobic polymers. This work explores the feasibility of hydrophobic SiO2- poly (methyl methacrylate) (PMMA) coatings towards surface protecting applications where the undesired corrosion issue takes place on the host surface. Hydrophobic SiO2-PMMA composite coating is achieved on stainless steel (SS) substrate for different time duration of dip coating using pre-synthesized SiO2-PMMA sol by sol-gel method. Coating duration of SiO2-PMMA influences PMMA species filling at SiO2 microstructures which relay on wettability behaviour of SS surface switch from Wenzel state to Cassie-Baxter state. The underlying mechanism of water repellence on SiO2-PMMA composite surface is examined using quantum chemical calculations. It clearly demonstrates that the high dipole moment of SiO2-MMA pair (5.63 Debye), than H2O (1.85 Debye) beneficially displaces water from steel and perhaps enhances the physical adsorption between steel greatly improved the corrosion resistance.",

keywords = "Polymer-matrix composites (PMCs), Quantum chemical modelling, Surface protection",

author = "{Madhan Kumar}, A. and Latthe, {Sanjay S.} and P. Sudhagar and Obot, {I. B.} and Gasem, {Zuhair M.}",

note = "Funding Information: The authors gratefully acknowledge King Fahd University of Petroleum and Minerals (KFUPM) for providing the facilities for this research. S.S.L and P.S acknowledge JSPS for providing the post-doctoral fellowship. Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd. All rights reserved.",

year = "2015",

month = oct,

day = "23",

doi = "10.1016/j.polymer.2015.09.030",

language = "English",

volume = "77",

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journal = "Polymer",

issn = "0032-3861",

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T1 - In-situ synthesis of hydrophobic SiO2-PMMA composite for surface protective coatings

T2 - Experimental and quantum chemical analysis

AU - Madhan Kumar, A.

AU - Latthe, Sanjay S.

AU - Sudhagar, P.

AU - Obot, I. B.

AU - Gasem, Zuhair M.

N1 - Funding Information: The authors gratefully acknowledge King Fahd University of Petroleum and Minerals (KFUPM) for providing the facilities for this research. S.S.L and P.S acknowledge JSPS for providing the post-doctoral fellowship. Publisher Copyright: © 2015 Elsevier Ltd. All rights reserved.

PY - 2015/10/23

Y1 - 2015/10/23

N2 - The extreme commercial demand for polymer based protective coatings has triggered in a recent propagation of methods expected to impart high corrosion resistance and numerous such methods involve wet-based processing of hydrophobic polymers. This work explores the feasibility of hydrophobic SiO2- poly (methyl methacrylate) (PMMA) coatings towards surface protecting applications where the undesired corrosion issue takes place on the host surface. Hydrophobic SiO2-PMMA composite coating is achieved on stainless steel (SS) substrate for different time duration of dip coating using pre-synthesized SiO2-PMMA sol by sol-gel method. Coating duration of SiO2-PMMA influences PMMA species filling at SiO2 microstructures which relay on wettability behaviour of SS surface switch from Wenzel state to Cassie-Baxter state. The underlying mechanism of water repellence on SiO2-PMMA composite surface is examined using quantum chemical calculations. It clearly demonstrates that the high dipole moment of SiO2-MMA pair (5.63 Debye), than H2O (1.85 Debye) beneficially displaces water from steel and perhaps enhances the physical adsorption between steel greatly improved the corrosion resistance.

AB - The extreme commercial demand for polymer based protective coatings has triggered in a recent propagation of methods expected to impart high corrosion resistance and numerous such methods involve wet-based processing of hydrophobic polymers. This work explores the feasibility of hydrophobic SiO2- poly (methyl methacrylate) (PMMA) coatings towards surface protecting applications where the undesired corrosion issue takes place on the host surface. Hydrophobic SiO2-PMMA composite coating is achieved on stainless steel (SS) substrate for different time duration of dip coating using pre-synthesized SiO2-PMMA sol by sol-gel method. Coating duration of SiO2-PMMA influences PMMA species filling at SiO2 microstructures which relay on wettability behaviour of SS surface switch from Wenzel state to Cassie-Baxter state. The underlying mechanism of water repellence on SiO2-PMMA composite surface is examined using quantum chemical calculations. It clearly demonstrates that the high dipole moment of SiO2-MMA pair (5.63 Debye), than H2O (1.85 Debye) beneficially displaces water from steel and perhaps enhances the physical adsorption between steel greatly improved the corrosion resistance.

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