TY  - JOUR
AB  - Purpose The study aims to find new anticorrosive components from a plant source, namely, Pachysandra terminalis Sieb. et Zucc. (P. terminalis), a traditional medicinal shrub predominantly used by Tujia people.Design/methodology/approach Because phenolic components from plants are known for its numerous values in several fields, the corrosion inhibitive ability of P. terminalis extract was analyzed by electrochemical studies (polarization, electrochemical impedance spectroscopy) and surface examination (by scanning electron microscopy [SEM], energy-dispersive X-ray spectroscopy [EDX] and atomic force microscopy [AFM]).Findings The examination of total phenolic content (TPC), total flavonoids content (TFC) and individual phenols (UHPLC) showed the presence of 85.21 mg/g (TPC), 25.38 mg/g (TFC), protocatechuic acid (62.10 µg/g), gentisic acid (60.21µg/g), rutin (50.12 µg/g), kaempferol (46.58 µg/g) and p-Coumaric acid (42.35µg/g) . The polarization study shows that the maximum shift is (16 mV), imposing a mixed mode of inhibition, dominantly anodic. The surface morphology studies by SEM, EDX and AFM confirmed the adsorption of phytochemical components on the low carbon steel surface blocking the active sites.Originality/value The study unveils the inhibitive nature of P. terminalis, preventing aggressive attack by 0.5 M HCl on low carbon steel. This also exhibits few phenols present in methanolic leaf extract which may be the role player of corrosion inhibition.
VL  - 48
IS  - 5
SN  - 0369-9420
DO  - 10.1108/PRT-09-2018-0095
UR  - https://doi.org/10.1108/PRT-09-2018-0095
AU  - Chitra Subramanian
AU  - Chung Ill-Min
AU  - Kim Seung-Hyun
AU  - Prabakaran Mayakrishnan
PY  - 2019
Y1  - 2019/01/01
TI  - A study on anticorrosive property of phenolic components from Pachysandra terminalis against low carbon steel corrosion in acidic medium
T2  - Pigment & Resin Technology
PB  - Emerald Publishing Limited
SP  - 389
EP  - 396
Y2  - 2024/04/23
ER  -