Abstract A series of bio-based polyester polyols with hydroxyl chain end was prepared using eugenol as a renewable source and various renewable diacids such as dimer, sebacic, succinic, and maleic acids. The functional group transformations and structure of monomer and polyols were analysed by the spectroscopic techniques. The hydroxyl functional polyester polyols were reacted with methylene diphenyl diisocyanate (MDI) to obtain polyurethane (PU) coatings. The prepared PUs were used as anticorrosive coatings and their performance was checked by dipping and electrochemical methods against 3.5 % sodium chloride (NaCl) solution. The developed coatings revealed excellent physico-mechanical properties such as transparency, gloss, flexibility, and cross-cut adhesion. Surface morphology and thermal stability of PU coatings were examined under scanning electron microscopy (SEM), atomic force microscopy (AFM), and thermogravimetric analysis, respectively.

中文翻译：

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用于开发 2K 防腐聚氨酯涂料的基于丁香酚的可再生多元醇

摘要 以丁香酚为可再生资源，以二聚体、癸二酸、丁二酸、马来酸等多种可再生二元酸为原料，制备了一系列具有羟基链端的生物基聚酯多元醇。通过光谱技术分析了单体和多元醇的官能团转化和结构。羟基官能聚酯多元醇与亚甲基二苯基二异氰酸酯（MDI）反应得到聚氨酯（PU）涂料。制备的聚氨酯用作防腐涂料，并通过浸渍和电化学方法对 3.5% 氯化钠 (NaCl) 溶液进行性能检查。开发的涂层显示出优异的物理机械性能，如透明度、光泽度、柔韧性和划格附着力。