Preparation and Characterization of Water-borne Polyurethane Based on Benzotriazole as Pendant Group with Different N-Alkylated Chain Extenders and Its Application in Anticorrosion
A series of novel anti-corrosive coatings were synthesized successfully. Water-borne polyurethane (WPU) was synthesized using polyethylene glycol and modified by grafting benzotriazole (BTA) as a pendant group (WPU-g-BTA) and N-alkylated amines (ethylene diamine (A), diethylene triamine (B), triethy...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/21/7581 |
| _version_ | 1797467050443014144 |
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| author | Aamna Bibi Ethan Tsai Yun-Xiang Lan Kung-Chin Chang Jui-Ming Yeh |
| author_facet | Aamna Bibi Ethan Tsai Yun-Xiang Lan Kung-Chin Chang Jui-Ming Yeh |
| author_sort | Aamna Bibi |
| collection | DOAJ |
| description | A series of novel anti-corrosive coatings were synthesized successfully. Water-borne polyurethane (WPU) was synthesized using polyethylene glycol and modified by grafting benzotriazole (BTA) as a pendant group (WPU-g-BTA) and N-alkylated amines (ethylene diamine (A), diethylene triamine (B), triethylene tetramine (C)) as side-chain extenders. Fourier-transform infrared spectroscopy, thermogravimetry, and dynamic mechanical analyses were used to characterize the structural and thermomechanical properties of the samples. A gas permeability analyzer (GPA) was used to evaluate molecular barrier properties. The corrosion inhibition performance of WPU-g-BTA-A, WPU-g-BTA-B, and WPU-g-BTA-C coatings in 3.5 wt% NaCl solution was determined by electrochemical measurements. WPU-g-BTA-C coating synthesized with a high cross-linking density showed superior anticorrosive performance. The as-prepared coatings exhibited a very low icorr value of 0.02 µA.cm<sup>−2</sup>, a high Ecorr value of −0.02 V, as well as excellent inhibition efficiency (99.972%) and impedance (6.33 Ω) after 30 min of exposure. |
| first_indexed | 2024-03-09T18:48:08Z |
| format | Article |
| id | doaj.art-980fb4275c8644909801d8e194ee8b2e |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T18:48:08Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-980fb4275c8644909801d8e194ee8b2e2023-11-24T06:06:35ZengMDPI AGMolecules1420-30492022-11-012721758110.3390/molecules27217581Preparation and Characterization of Water-borne Polyurethane Based on Benzotriazole as Pendant Group with Different N-Alkylated Chain Extenders and Its Application in AnticorrosionAamna Bibi0Ethan Tsai1Yun-Xiang Lan2Kung-Chin Chang3Jui-Ming Yeh4Department of Chemistry, Center for Nanotechnology and R & D Center for Membrane Technology, Chung-Yuan Christian University, Chung Li 32023, TaiwanDepartment of Chemistry, Center for Nanotechnology and R & D Center for Membrane Technology, Chung-Yuan Christian University, Chung Li 32023, TaiwanDepartment of Chemistry, Center for Nanotechnology and R & D Center for Membrane Technology, Chung-Yuan Christian University, Chung Li 32023, TaiwanDepartment of Chemistry, Center for Nanotechnology and R & D Center for Membrane Technology, Chung-Yuan Christian University, Chung Li 32023, TaiwanDepartment of Chemistry, Center for Nanotechnology and R & D Center for Membrane Technology, Chung-Yuan Christian University, Chung Li 32023, TaiwanA series of novel anti-corrosive coatings were synthesized successfully. Water-borne polyurethane (WPU) was synthesized using polyethylene glycol and modified by grafting benzotriazole (BTA) as a pendant group (WPU-g-BTA) and N-alkylated amines (ethylene diamine (A), diethylene triamine (B), triethylene tetramine (C)) as side-chain extenders. Fourier-transform infrared spectroscopy, thermogravimetry, and dynamic mechanical analyses were used to characterize the structural and thermomechanical properties of the samples. A gas permeability analyzer (GPA) was used to evaluate molecular barrier properties. The corrosion inhibition performance of WPU-g-BTA-A, WPU-g-BTA-B, and WPU-g-BTA-C coatings in 3.5 wt% NaCl solution was determined by electrochemical measurements. WPU-g-BTA-C coating synthesized with a high cross-linking density showed superior anticorrosive performance. The as-prepared coatings exhibited a very low icorr value of 0.02 µA.cm<sup>−2</sup>, a high Ecorr value of −0.02 V, as well as excellent inhibition efficiency (99.972%) and impedance (6.33 Ω) after 30 min of exposure.https://www.mdpi.com/1420-3049/27/21/7581water-borne polyurethanebenzotriazoleN-alkylated chain extendersanti-corrosion |
| spellingShingle | Aamna Bibi Ethan Tsai Yun-Xiang Lan Kung-Chin Chang Jui-Ming Yeh Preparation and Characterization of Water-borne Polyurethane Based on Benzotriazole as Pendant Group with Different N-Alkylated Chain Extenders and Its Application in Anticorrosion Molecules water-borne polyurethane benzotriazole N-alkylated chain extenders anti-corrosion |
| title | Preparation and Characterization of Water-borne Polyurethane Based on Benzotriazole as Pendant Group with Different N-Alkylated Chain Extenders and Its Application in Anticorrosion |
| title_full | Preparation and Characterization of Water-borne Polyurethane Based on Benzotriazole as Pendant Group with Different N-Alkylated Chain Extenders and Its Application in Anticorrosion |
| title_fullStr | Preparation and Characterization of Water-borne Polyurethane Based on Benzotriazole as Pendant Group with Different N-Alkylated Chain Extenders and Its Application in Anticorrosion |
| title_full_unstemmed | Preparation and Characterization of Water-borne Polyurethane Based on Benzotriazole as Pendant Group with Different N-Alkylated Chain Extenders and Its Application in Anticorrosion |
| title_short | Preparation and Characterization of Water-borne Polyurethane Based on Benzotriazole as Pendant Group with Different N-Alkylated Chain Extenders and Its Application in Anticorrosion |
| title_sort | preparation and characterization of water borne polyurethane based on benzotriazole as pendant group with different n alkylated chain extenders and its application in anticorrosion |
| topic | water-borne polyurethane benzotriazole N-alkylated chain extenders anti-corrosion |
| url | https://www.mdpi.com/1420-3049/27/21/7581 |
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