Shi Shih-Chen, Su Chieh-Chang
Department of Mechanical Engineering, National Cheng Kung University (NCKU), No. 1 University Road, Tainan 70101, Taiwan.
Materials (Basel). 2016 Jul 23;9(8):612. doi: 10.3390/ma9080612.
The corrosion inhibition characteristics of the derivatives of biopolymer hydroxypropyl methylcellulose (HPMC), hydroxypropyl methylcellulose phthalate (HPMCP), and hydroxypropyl methylcellulose acetate succinate (HPMCAS) film are investigated. Based on electrochemical impedance spectroscopic measurements and potentiodynamic polarization, the corrosion inhibition performance of high speed steel coated with HPMC derivatives is evaluated. The Nyquist plot and Tafel polarization demonstrate promising anti-corrosion performance of HPMC and HPMCP. With increasing film thickness, both materials reveal improvement in corrosion inhibition. Moreover, because of a hydrophobic surface and lower moisture content, HPMCP shows better anti-corrosion performance than HPMCAS. The study is of certain importance for designing green corrosion inhibitors of high speed steel surfaces by the use of biopolymer derivatives.
研究了生物聚合物羟丙基甲基纤维素（HPMC）、邻苯二甲酸羟丙基甲基纤维素（HPMCP）和醋酸琥珀酸羟丙基甲基纤维素（HPMCAS）薄膜衍生物的缓蚀特性。基于电化学阻抗谱测量和动电位极化，评估了涂覆有HPMC衍生物的高速钢的缓蚀性能。奈奎斯特图和塔菲尔极化表明HPMC和HPMCP具有良好的防腐性能。随着膜厚度的增加，两种材料的缓蚀性能均有所提高。此外，由于HPMCP表面具有疏水性且含水量较低，其防腐性能优于HPMCAS。该研究对于利用生物聚合物衍生物设计高速钢表面绿色缓蚀剂具有一定的重要性。
