Anticorrosive and Microbial Inhibition Performance of a Coating Loaded with <i>Andrographis paniculata</i> on Stainless Steel in Seawater
oleh: Wan Mohamad Ikhmal Wan Mohamad Kamaruzzaman, Maria Fazira Mohd Fekeri, Nursabrina Amirah Mohd Nasir, Nur Aiman Syafiq Mohd Hamidi, Mohamad Zahid Baharom, Azila Adnan, Muhamad Syaizwadi Shaifudin, Wan Rafizah Wan Abdullah, Wan Mohd Norsani Wan Nik, Fariza Hanim Suhailin, Khamirul Amin Matori, Chen Soo Kien, Mohd Hafiz Mohd Zaid, Mohd Sabri Mohd Ghazali
| Format: | Article |
|---|---|
| Diterbitkan: | MDPI AG 2021-06-01 |
Deskripsi
With the trend for green technology, the study focused on utilizing a forgotten herb to produce an eco-friendly coating. <i>Andrographis paniculata</i> or the kalmegh leaves extract (KLE) has been investigated for its abilities in retarding the corrosion process due to its excellent anti-oxidative and antimicrobial properties. Here, KLE was employed as a novel additive in coatings and formulations were made by varying its wt%: 0, 3, 6, 9, and 12. These were applied to stainless steel 316L immersed in seawater for up to 50 days. The samples were characterized and analyzed to measure effectiveness of inhibition of corrosion and microbial growth. The best concentration was revealed to be 6 wt% KLE; it exhibited the highest performance in improving the ionic resistance of the coating and reducing the growth of bacteria.