Interactions at the mild steel acid solution interface in the presence of O-fumaryl-chitosan: Electrochemical and surface studies.
Interactions at the mild steel acid solution interface in the presence of O-fumaryl-chitosan: Electrochemical and surface studies.
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DOI：
10.1016/j.carbpol.2015.08.057
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发表时间：
2016-01
影响因子：
11.2
通讯作者：
Y. Sangeetha;S. Meenakshi;C. Sundaram
中科院分区：
文献类型：
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作者：
Y. Sangeetha;S. Meenakshi;C. Sundaram
合成的 O-富马酰基壳聚糖 (OFC) 作为低碳钢在 1 M HCl 中的缓蚀剂的性能已通过各种研究进行了评估。失重法初步筛选表明该抑制剂具有良好的抑制效果。热力学和动力学参数已被计算和讨论。吸附方式本质上是物理吸附，遵循朗缪尔吸附等温线。电化学测量支持壳聚糖的富马酰衍生物对低碳钢的抑制作用。极化研究提供的信息表明抑制是混合类型的。通过扫描电子显微镜 (SEM) 和原子力显微镜 (AFM) 的表面形态研究可确保抑制剂膜的形成。抑制机制源自傅里叶变换红外（FTIR）光谱和零电荷电位测量。使用 FTIR 和 X 射线衍射研究 (XRD) 对吸附膜进行表征。
The performance of synthesised O-fumaryl-chitosan (OFC) as corrosion inhibitor for mild steel in 1 M HCl has been evaluated through various studies. The initial screening by weight loss method revealed the good inhibition efficiency by the inhibitor. Thermodynamic and kinetic parameters have been calculated and discussed. The mode of adsorption is physical in nature and it follows Langmuir adsorption isotherm. Electrochemical measurements supported the inhibition of mild steel by the fumaryl derivative of chitosan. Polarisation studies provided the information that the inhibition is of mixed type. The formation of inhibitor film is assured by surface morphological studies with Scanning electron microscopy (SEM) and Atomic force microscopy (AFM). The mechanism of inhibition is derived from the Fourier-transform infrared (FTIR) spectroscopy and zero charge potential measurement. The adsorbed film is characterised using FTIR and X-ray diffraction studies (XRD).