Polyolefin-Based Smart Self-Healing Composite Coatings Modified with Calcium Carbonate and Sodium Alginate

被引:3
|
作者
Nawaz, Muddasir [1 ]
Shakoor, Rana Abdul [1 ,2 ]
Al-Qahtani, Noora [1 ,3 ]
Bhadra, Jolly [4 ]
Al-Thani, Noora Jabor [4 ]
Kahraman, Ramazan [5 ]
机构
[1] Qatar Univ, Ctr Adv Mat CAM, Doha 2713, Qatar
[2] Qatar Univ, Dept Mech & Ind Engn, Doha 2713, Qatar
[3] Qatar Univ, Centeral Labs Unit, Doha 2713, Qatar
[4] Qatar Univ, Qatar Univ Young Scientist Ctr, Doha 2713, Qatar
[5] Qatar Univ, Dept Chem Engn, Doha 2713, Qatar
关键词
anti-corrosive pigment; calcium carbonate; polyolefin coating; sodium alginate; corrosion inhibition; self-healing; CORROSION PROTECTION; MILD-STEEL; INHIBITION; BIOPOLYMER;
D O I
10.3390/polym16050636
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Corrosion-related damage incurs significant capital costs in many industries. In this study, an anti-corrosive pigment was synthesized by modifying calcium carbonate with sodium alginate (SA), and smart self-healing coatings were synthesized by reinforcing the anti-corrosive pigments into a polyolefin matrix. Structural changes during the synthesis of the anti-corrosive pigment were examined using scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis. Moreover, thermal gravimetric analysis confirmed the loading of the corrosion inhibitor, and electrochemical impedance spectroscopic analysis revealed a stable impedance value, confirming the improved corrosion resistance of the modified polyolefin coatings. The incorporation of the anticorrosive pigment into a polyolefin matrix resulted in improved pore resistance properties and capacitive behavior, indicating a good barrier property of the modified coatings. The formation of a protective film on the steel substrate reflected the adsorption of the corrosion inhibitor (SA) on the steel substrate, which further contributed to enhancing the corrosion resistance of the modified coatings. Moreover, the formation of the protective film was also analyzed by profilometry and elemental mapping analysis.
引用
收藏
页数:13
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