Development of Hydrophobic, Anticorrosive, Nanocomposite Polymeric Coatings from Canola Oil: A Sustainable Resource
Abstract
:1. Introduction
2. Materials and Methods
2.1. Synthesis of Canola Diol Fatty Amide (CADFA)
2.2. Synthesis of CA Oil Based Poly (Oxalate-Amide) (CAPOA) (Step 1)
2.3. Synthesis of CA Oil Based Poly(Urethane- Oxalate-Amide) (CAPUOA) (Step 2)
2.4. Preparation of Poly(Urethane-Oxalate-Amide)/Fumed Silica Nanocomposite(Step 3)
2.5. Preparation of CAPUOA/FS Nanocomposite Coating
3. Results and Discussion
3.1. Solubility and Physico-Chemical Properties
3.2. Spectral Analysis
3.3. NMR Spectra
3.4. XRD Analysis
3.5. Surface Wettability
3.6. SEM and EDX Analysis
3.7. Physico-Mechanical Characterization
3.8. Thermal Analysis
3.9. Corrosion Study
3.9.1. Potentiodynamic Polarization
3.9.2. Electrochemical Impedance Spectroscopy (EIS)
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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System | Compositions | Properties of Coatings | References |
---|---|---|---|
Poly (urethane-oxalate-amide) nanocomposite | [Canola diol fatty amide + Oxalic acid + TDI]-FS | Anticorrosion (up to 18 days,3.5 wt.% NaCl), scratch hardness: 3.0 kg, Pencil hardness: 4H, Contact angle = 108°.Gloss:100, Thermal stability up to 200 °C. | Present work |
Poly(diamino cyclohexane urethaneesteramide) nanocomposite | [Jatropha diol fattyamide + trans 1,2 diaminocyclo-hexane-N,N,N’,N’-tetraacetic acid + TDI]-FS | Anticorrosion (3.5 wt.% HCl, 3.5 wt.% NaCl, Tap water), Scratch hardness: 2.8 kg Pencil hardness: HB, Thermal stability up to 200 °C. | [20] |
Poly(urethane-glutaric-esteramide)-nanocomposite | [Corn diol fattyamide + glutaricacid + TDI] + FS | Anticorrosion (up to 39 days, 3.5 wt.% NaCl), scratch hardness: 2.8 kg, pencil hardness:5H Contact angle:108°, Thermal stability up to 270 °C. | [17] |
Polyurethane/tetraethoxyorthosilane(TEOS)/fumed silica hybrid nanocomposite | [linseed polyol + TDI]-TEOS + FS | Anticorrosion (3.5% NaOH and 3.5% HCl), antibacterial, scratch hardness: 5.5 kg, Thermal stability up to 270 °C. | [15] |
Polyurethaneamide/silica | [Linseed diol fatty amide + TEOS + TDI] | Anticorrosion (HCl, NaOH), antibacterial, Thermally stable upto 240 °C. | [6] |
Polyurethane/SiO2 nanocomposites | [Sapiumsebiferum oil Polyurethane3-aminopropyltriethoxysilane + IPDI] nano SiO2] | Tensile strength (12.4 MPa), glass transition temperature (69.9 °C), water and toluene resistance | [21] |
Analysis | CAPUOA | CAPUOA/FS1 | CAPUOA/FS2 | CAPUOA/FS3 |
---|---|---|---|---|
Thickness (micron) | 196 | 210 | 230 | 235 |
Scratch hardness (Kg) | 2.5 | 2.8 | 3.0 | 3.2 |
Pencil hardness | HB | 3H | 4H | 5H |
Cross hatch (100%) | Passes | Passes | Passes | Passes |
Bending (1/8 inch) | Passes | Passes | Passes | Fail |
Impact (100 lb/inch) | Passes | Passes | Passes | Fail |
Gloss at 45° | 93 | 96 | 100 | 103 |
Immersion Time (days) | Ba (V/dec) | Bc (V/dec) | Ecorr (V) | Icorr (A) | CR (mm/y) | LPR (Ω·cm2) |
---|---|---|---|---|---|---|
Bare CS (1 h) | 0.140 | 0.323 | −0.492 | 1.583 × 10−5 | 0.184 | 2683.9 |
3 | 0.380 | 0.351 | 0.131 | 1.019 × 10−9 | 1.184 × 10−5 | 7.702 × 107 |
6 | 0.357 | 0.367 | 0.084 | 1.180 × 10−9 | 1.372 × 10−5 | 6.770 × 107 |
9 | 0.311 | 0.430 | −0.376 | 1.848 × 10−9 | 2.138 × 10−5 | 4.315 × 107 |
12 | 0.343 | 0.397 | −0.414 | 4.004 × 10−9 | 2.148 × 10−5 | 1.138 × 107 |
15 | 0.345 | 0.392 | −0.474 | 7.600 × 10−9 | 8.831 × 10−5 | 1.036 × 107 |
18 | 0.358 | 0.376 | −0.500 | 9.818 × 10−9 | 1.409 × 10−5 | 8.079 × 106 |
Immersion Time (Days) | Solution Resistance, Rs (Ω) | Charge Transfer Resistance, Rct (MΩ) | Coating Capacitance Cc (Pf) | CPE | |
---|---|---|---|---|---|
Y0 (nmho × sN) | n | ||||
Bare CS (1 h) | 108 | 7.620 × 10−4 | 0.579 × 10−3 | 0.00165 | 0.80 |
3 | −745 | 7.143 | 124 | 6.61 | 0.92 |
6 | −769 | 4.432 | 132 | 14.8 | 0.83 |
9 | −824 | 4.721 | 121 | 1.11 | 0.80 |
12 | −754 | 4.176 | 122 | 14.5 | 0.97 |
15 | −690 | 3.028 | 134 | 62.1 | 0.95 |
18 | −537 | 2.086 | 197 | 24.3 | 0.94 |
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Alam, M.; Alandis, N.M.; Ahmad, N.; Zafar, F.; Khan, A.; Alam, M.A. Development of Hydrophobic, Anticorrosive, Nanocomposite Polymeric Coatings from Canola Oil: A Sustainable Resource. Polymers 2020, 12, 2886. https://doi.org/10.3390/polym12122886
Alam M, Alandis NM, Ahmad N, Zafar F, Khan A, Alam MA. Development of Hydrophobic, Anticorrosive, Nanocomposite Polymeric Coatings from Canola Oil: A Sustainable Resource. Polymers. 2020; 12(12):2886. https://doi.org/10.3390/polym12122886
Chicago/Turabian StyleAlam, Manawwer, Naser M. Alandis, Naushad Ahmad, Fahmina Zafar, Aslam Khan, and Mohammad Asif Alam. 2020. "Development of Hydrophobic, Anticorrosive, Nanocomposite Polymeric Coatings from Canola Oil: A Sustainable Resource" Polymers 12, no. 12: 2886. https://doi.org/10.3390/polym12122886