Academic Journal
TiO 2 Nanocontainers Coconstructed Using Polymers and Corrosion Inhibitors for Anticorrosion Reinforcement of Waterborne Epoxy Coatings
| العنوان: | TiO 2 Nanocontainers Coconstructed Using Polymers and Corrosion Inhibitors for Anticorrosion Reinforcement of Waterborne Epoxy Coatings |
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| المؤلفون: | Yijie Jin, Haitao Duan, Shengpeng Zhan, Jiesong Tu, Tian Yang, Wulin Zhang, Lixin Ma, Hualong Yu, Dan Jia |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Biotechnology, Immunology, Plant Biology, Chemical Sciences not elsewhere classified, smart waterborne epoxy, scanning electron microscopy, salt spray exposure, phenolic hydroxyl groups, anticipated application prospects, 79 × 10, 32 × 10, 30 day immersion, term corrosion protection, excellent corrosion protection, 11 , ray photoelectron spectroscopy, exposed metal surface, charge transfer resistance, loading corrosion inhibitors, inhibit corrosion activity, 5 , 2 –, 2 , intricate preparation processes, term anticorrosion coatings, 2 , corrosion resistance, corrosion inhibitors, responsive activity, ray diffraction |
| الوصف: | Stimulus-responsive coatings can provide active corrosion protection in response to environmental changes, but they have not reached their anticipated application prospects because of the intricate preparation processes of hollow materials and methods for loading corrosion inhibitors. Herein, polyaniline molybdate corrosion inhibitor and polydopamine-wrapped titanium dioxide nanocontainers (named TiO 2 /PANI-MoO 4 2– /PDA) are synthesized via a simple three-step electrostatic assembly technique. Introducing TiO 2 /PANI-MoO 4 2– /PDA nanocontainers in smart waterborne epoxy (WEP) coatings affords the latter with high barriers and long-term corrosion protection. The successful deposition of each layer on the TiO 2 nanocontainer surface was validated via Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy. Release test results show that the molybdate corrosion inhibitor exhibits notable pH-responsive activity under acidic conditions and slow release in neutral environments, which improves the corrosion resistance of coatings. The addition of synthetic nanocontainers greatly improves the impermeability of WEP coatings. The charge transfer resistance of WEP/TiO 2 /PANI-MoO 4 2– /PDA coatings is 1.79 × 10 11 Ω cm 2 after 30 day immersion in a 3.5 wt % NaCl solution, which is 3.32 × 10 5 times higher than that of WEP coatings. WEP/TiO 2 /PANI-MoO 4 2– /PDA coatings remain uniform and reliable, even after 50 days of salt spray exposure. The excellent corrosion protection of WEP/TiO 2 /PANI-MoO 4 2– /PDA coatings is attributed to (1) the enhanced dispersion and compatibility of PDA in the coating for nanocontainers, (2) the combination of phenolic hydroxyl groups of PDA and Fe, which inhibit corrosion activity on the exposed metal surface, and (3) the on-demand release of the MoO 4 2– inhibitor, which provides sustained passivation protection. This work proposes a strategy to simplify the preparation of responsive long-term anticorrosion coatings ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| Relation: | https://figshare.com/articles/journal_contribution/TiO_sub_2_sub_Nanocontainers_Coconstructed_Using_Polymers_and_Corrosion_Inhibitors_for_Anticorrosion_Reinforcement_of_Waterborne_Epoxy_Coatings/24484262 |
| DOI: | 10.1021/acsami.3c12194.s001 |
| الاتاحة: | https://doi.org/10.1021/acsami.3c12194.s001 https://figshare.com/articles/journal_contribution/TiO_sub_2_sub_Nanocontainers_Coconstructed_Using_Polymers_and_Corrosion_Inhibitors_for_Anticorrosion_Reinforcement_of_Waterborne_Epoxy_Coatings/24484262 |
| Rights: | CC BY-NC 4.0 |
| رقم الانضمام: | edsbas.E3D909B0 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acsami.3c12194.s001 |
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