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Al-otaibi W, Alandis NM, Al-Mohammad YM, Alam M. Advanced Anticorrosive Graphene Oxide-Doped Organic-Inorganic Hybrid Nanocomposite Coating Derived from Leucaena leucocephala Oil. Polymers (Basel) 2023; 15:4390. [PMID: 38006114 PMCID: PMC10675539 DOI: 10.3390/polym15224390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/19/2023] [Accepted: 10/25/2023] [Indexed: 11/26/2023] Open
Abstract
Metal corrosion poses a substantial economic challenge in a technologically advanced world. In this study, novel environmentally friendly anticorrosive graphene oxide (GO)-doped organic-inorganic hybrid polyurethane (LFAOIH@GO-PU) nanocomposite coatings were developed from Leucaena leucocephala oil (LLO). The formulation was produced by the amidation reaction of LLO to form diol fatty amide followed by the reaction of tetraethoxysilane (TEOS) and a dispersion of GOx (X = 0.25, 0.50, and 0.75 wt%) along with the reaction of isophorane diisocyanate (IPDI) (25-40 wt%) to form LFAOIH@GOx-PU35 nanocomposites. The synthesized materials were characterized by Fourier transform infrared spectroscopy (FTIR); 1H, 13C, and 29Si nuclear magnetic resonance; and X-ray photoelectron spectroscopy. A detailed examination of LFAOIH@GO0.5-PU35 morphology was conducted using X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and transmission electron microscopy. These studies revealed distinctive surface roughness features along with a contact angle of around 88 G.U preserving their structural integrity at temperatures of up to 235 °C with minimal loading of GO. Additionally, improved mechanical properties, including scratch hardness (3 kg), pencil hardness (5H), impact resistance, bending, gloss value (79), crosshatch adhesion, and thickness were evaluated with the dispersion of GO. Electrochemical corrosion studies, involving Nyquist, Bode, and Tafel plots, provided clear evidence of the outstanding anticorrosion performance of the coatings.
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Affiliation(s)
| | | | | | - Manawwer Alam
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; (W.A.-o.); (N.M.A.)
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Elfadel RG, Refat HM, El-Wahab HA, Salem SS, Owda ME, Abdel Reheim MAM. Preparation of new surface coating based on modified oil-based polymers blended with ZnO and CuZnO NPs for steel protection. Sci Rep 2023; 13:7268. [PMID: 37142616 PMCID: PMC10160130 DOI: 10.1038/s41598-023-34085-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 04/24/2023] [Indexed: 05/06/2023] Open
Abstract
In our paper, we have synthesized modified PEA and alkyd resin by replacing the new source of polyol (SDEA) which was confirmed by different analyses such as IR, and 1HNMR spectra. A series of conformal, novel, low-cost, and eco-friendly hyperbranched modified alkyd and PEA resins were fabricated with bio ZnO, CuO/ZnO) NPs through an ex-situ method for mechanical and anticorrosive coatings. The synthesized biometal oxides NPs and its composite modified alkyd and PEA were confirmed by FTIR, SEM with EDEX, TEM, and TGA, and can be stably dispersed into modified alkyd and PEA resins at a low weight fraction of 1%. The nanocomposite coating was also subjected to various tests to determine their surface adhesion, which ranged from (4B-5B), physico-mechanical characteristics such as scratch hardness, which improved from < 1.5 to > 2 kg, gloss (100-135) Specific gravity (0.92-0.96) and also chemical resistance test which passed for water, acid, and solvent except alkali, was poor because of the hydrolyzable ester group in the alkyd and PEA resins. The anti-corrosive features of the nanocomposites were investigated through salt spray tests in 5 wt % NaCl. The results indicate that well-dispersed bio ZnO and CuO/ZnO) NPs (1.0%) in the interior of the hyperbranched alkyd and PEA matrix improve the durability and anticorrosive attributes of the composites, such as degree of rusting, which ranged from 5 to 9, blistering size ranged from 6 to 9, and finally, scribe failure, which ranged from 6 to 9 mm. Thus, they exhibit potential applications in eco- friendly surface coatings. The anticorrosion mechanisms of the nanocomposite alkyd and PEA coating were attributed to the synergistic effect of bio ZnO and (CuO/ZnO) NPs and the prepared modified resins are highly rich in nitrogen elements, which might be regarded as a physical barrier layer for steel substrates.
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Affiliation(s)
- Roma G Elfadel
- Department of Chemistry, Faculty of Science, Arish University, Arish, 45511, Egypt
| | - Hala M Refat
- Department of Chemistry, Faculty of Science, Arish University, Arish, 45511, Egypt
| | - H Abd El-Wahab
- Department of Chemistry, Faculty of Science, Al-Azhar University, Cairo, 11884, Egypt
| | - Salem S Salem
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo, 11884, Egypt
| | - M E Owda
- Department of Chemistry, Faculty of Science, Al-Azhar University, Cairo, 11884, Egypt.
| | - M A M Abdel Reheim
- Department of Chemistry, Faculty of Science, Arish University, Arish, 45511, Egypt
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Alam M, Altaf M, Ahmed M, Shaik MR, Wahab R, Shaik JP, Samdani MS, Ahmad A. Development of Metallo (Calcium/Magnesium) Polyurethane Nanocomposites for Anti-Corrosive Applications. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8374. [PMID: 36499868 PMCID: PMC9738934 DOI: 10.3390/ma15238374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/08/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Long-term corrosion protection of metals might be provided by nanocomposite coatings having synergistic qualities. In this perspective, rapeseed oil-based polyurethane (ROPU) and nanocomposites with calcium and magnesium ions were designed. The structure of these nanocomposites was established through Fourier-transform infrared spectroscopy (FT-IR). The morphological studies were carried out using scanning electron microscopy (SEM) as well as transmission electron microscopy (TEM). Their thermal characteristics were studied using thermogravimetric analysis (TGA). Electrochemical experiments were applied for the assessment of the corrosion inhibition performance of these coatings in 3.5 wt. % NaCl solution for 7 days. After completion of the test, the results revealed a very low icorr value of 7.73 × 10-10 A cm-2, a low corrosion rate of 8.342 × 10-5 mpy, impedance 1.0 × 107 Ω cm2, and phase angle (approx 90°). These findings demonstrated that nanocomposite coatings outperformed ordinary ROPU and other published methods in terms of anticorrosive activity. The excellent anti-corrosive characteristic of the suggested nanocomposite coatings opens up new possibilities for the creation of advanced high-performance coatings for a variety of metal industries.
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Affiliation(s)
- Manawwer Alam
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohammad Altaf
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mukhtar Ahmed
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohammed Rafi Shaik
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Rizwan Wahab
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | | | | | - Ashfaq Ahmad
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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Lu KT, Chang JP. Synthesis and Antimicrobial Activity of Metal-Containing Linseed Oil-Based Waterborne Urethane Oil Wood Coatings. Polymers (Basel) 2020; 12:polym12030663. [PMID: 32188061 PMCID: PMC7183048 DOI: 10.3390/polym12030663] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 03/11/2020] [Accepted: 03/13/2020] [Indexed: 11/16/2022] Open
Abstract
In this study, the antimicrobial agents of mono(hydroxyethoxyethyl)phthalate (M(HEEP)2) with different metal of M = Zn, Mn, Pb, and Ca were synthesized from diethylene glycol (DEG), phthalic anhydride (PA), and divalent metal acetates including calcium acetate, zinc acetate, manganese acetate, and lead acetate, respectively. The waterborne urethane oil (WUO) dispersions synthesized from linseed oil, diisocyanates (hexamethylene diisocyanate (HDI) and isophorone diisocyanate (IPDI)), dimethylolpropionic acid at NCO/OH molars of 0.9, by acetone processing method were described as in our previous report. The M(HEEP)2 antimicrobial agents as well as the commercial nanosilver powder were added into WUO dispersions as the antimicrobial coatings. The effects of various antimicrobial agents and dosages (0.0, 0.2, 0.6, 0.8, 1.0, 2.0, and 4.0 phr) on antimicrobial activity of WUO films against gram-negative bacterium of Escherichia coli, gram-positive bacterium of Staphylococcus aureus, brown-rot fungus of Gloeophyllum trabeum, and white-rot fungus of Lenzites betulina were assessed. In addition, the film properties of the best antimicrobial WUO coatings were also examined. The results showed that the antimicrobial agents of mono(hydroxyethoxyethyl) phthalate M(HEEP)2 (M = Zn, Mn, Pb, and Ca) powders should certainly be synthesized by FTIR, 1H-NMR, 13C-NMR, and energy-dispersive X-ray spectroscopy (EDS) identifications and the yields of them were 43–55%. The results also revealed that the WUO film synthesizing with HDI films containing Zn(HEEP)2 of 2.0 phr and Pb(HEEP)2 of 0.4 phr had the best antibacterial activity for E. coli and S. aureus, respectively. The IPDI films containing Zn(HEEP)2 of 1.0 phr had the best antibacterial activity for both E. coli and S. aureus. For antifungal activity, the WUO film synthesizing with HDI films containing Pb(HEEP)2 of 0.8 phr and Zn(HEEP)2 of 2.0 phr as well as IPDI films containing Mn(HEEP)2 of 0.2 phr and Zn(HEEP)2 of 4.0 phr had the best performances against G. trabeum and L. betulina, respectively. Comparing with commercial nanoAg powder, the Zn(HEEP)2 and Pb(HEEP)2 had a superior antifungal efficiency for G. trabeum and L. betulina, while it had a slightly inferior efficiency in the antibacterial activity for E. coli and S. aureus. On the properties of WUO films, adding metal-containing antimicrobial agents could slightly enhance the thermal stability, but lowered the gloss of all films, however, the Tg value increased for HDI film and decreased for IPDI film. In addition to this, they had no significant difference in the film properties including hardness, impact resistance, bending resistance, adhesion, mass retention, and light-fastness between the WUO films with and without adding antimicrobial agents.
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Affiliation(s)
- Kun-Tsung Lu
- Correspondence: ; Tel.: +886-4-2284-0345 (ext. 122); Fax: +886-4-2287-3628
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Sen P, Akagunduz D, Aghdam AS, Cebeci FÇ, Nyokong T, Catal T. Synthesis of Novel Schiff Base Cobalt (II) and Iron (III) Complexes as Cathode Catalysts for Microbial Fuel Cell Applications. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01286-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Zafar F, Azam M, Sharmin E, Zafar H, Rizwanul Haq QM, Nishat N. Nanostructured coordination complexes/polymers derived from cardanol: “one-pot, two-step” solventless synthesis and characterization. RSC Adv 2016. [DOI: 10.1039/c5ra20171c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
An eco-design of Cardanol and Mn(ii)/Co(ii) based nanostructured CP with octahedral geometry and form micro to nano spheres that self arranged to contour amorphous, layered morphology with desirable antibiofilm activity and high thermal stability.
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Affiliation(s)
- Fahmina Zafar
- Inorganic Materials Research Laboratory
- Department of Chemistry
- New Delhi 110025
- India
| | - Mudsser Azam
- Microbiology Research Laboratory
- Department of Biosciences
- New Delhi-110025
- India
| | - Eram Sharmin
- Department of Pharmaceutical Chemistry
- College of Pharmacy
- Umm Al-Qura University
- Makkah Al-Mukarramah
- Saudi Arabia
| | - Hina Zafar
- Division of Inorganic Chemistry
- Department of Chemistry
- Aligarh Muslim University
- Aligarh 202002
- India
| | | | - Nahid Nishat
- Inorganic Materials Research Laboratory
- Department of Chemistry
- New Delhi 110025
- India
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Khan S, Laxmi L, Zafar F, Nishat N. Development of bio-derived nanostructured coordination polymers based on cardanol–formaldehyde polyurethanes with ‘d5’ Mn(ii) and ‘d10’ Zn(ii) metal nodes: synthesis, characterization and adsorption behavior. RSC Adv 2016. [DOI: 10.1039/c6ra00849f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Using renewable resources like cardanol aiming towards development of bio-derived coordination polymers with nanoporous layered morphology, amorphous/crystalline behavior, and better thermal stability having moderate adsorption capacity towards dye.
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Affiliation(s)
- Shabnam Khan
- Inorganic Materials Research Laboratory
- Department of Chemistry
- Jamia Millia Islamia
- New Delhi 110025
- India
| | - Laxmi Laxmi
- Inorganic Materials Research Laboratory
- Department of Chemistry
- Jamia Millia Islamia
- New Delhi 110025
- India
| | - Fahmina Zafar
- Inorganic Materials Research Laboratory
- Department of Chemistry
- Jamia Millia Islamia
- New Delhi 110025
- India
| | - Nahid Nishat
- Inorganic Materials Research Laboratory
- Department of Chemistry
- Jamia Millia Islamia
- New Delhi 110025
- India
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Maryan AS, Montazer M. Natural and organo-montmorillonite as antibacterial nanoclays for cotton garment. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2014.07.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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