文献类型：期刊文献

英文题名：Synthesizing Hindered Structure Poly (p-Phenylenediamine) by Enzymatic Catalysis and Evaluating Its Antioxidation Mechanism in Biodegradable Castor Oils

作者：Miao, Changqing[1];Wang, Yanbo[1];Ma, Zhiying[2];Luo, Yang[1];Miao, Yu[1];Yuan, Pingfang[1];Guo, Jiao[1];Chen, Gairong[1];Liu, Hongbo[3]

第一作者：Miao, Changqing

通讯作者：Chen, GR[1];Liu, HB[2]

机构：[1]Xinxiang Univ, Coll Chem & Chem Engn, 191 Jinsui Ave, Xinxiang 453003, Henan, Peoples R China;[2]Henan Univ, Engn Res Ctr Nanomat, Jinming Ave, Kaifeng 475000, Peoples R China;[3]Hunan Univ, Coll Mat Sci & Engn, Lushan Rd S, Changsha 410082, Hunan, Peoples R China

第一机构：新乡学院化学化工学院

通讯机构：[1]corresponding author), Xinxiang Univ, Coll Chem & Chem Engn, 191 Jinsui Ave, Xinxiang 453003, Henan, Peoples R China;[2]corresponding author), Hunan Univ, Coll Mat Sci & Engn, Lushan Rd S, Changsha 410082, Hunan, Peoples R China.|[110713]新乡学院化学化工学院;[11071]新乡学院;

年份：2021

卷号：98

期号：6

起止页码：673-682

外文期刊名：JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY

收录：;EI(收录号：20211010026548);Scopus(收录号：2-s2.0-85101884512);WOS:【SCI-EXPANDED(收录号:WOS:000624356400001)】；

基金：The authors acknowledge the financial support provided by the National Science Foundation of China (Grant No. 21706226), the Science and Technology Research Plan (industrial field) Project of Henan Province (Grant No. 202102210224), and the Key Scientific Research Project of Colleges and Universities in Henan Province (Grant No. 18B530003, 19B150016, 19A150038).

语种：英文

外文关键词：Lubricant; Synthesis; Poly (p‐ phenylenediamine); Antioxidation mechanism

摘要：In this study, poly(p-phenylenediamine) (PPDA) was synthesized by an enzymatic polymerization method using p-phenylenediamine as the monomer in the water phase. The PPDA structure was characterized by infrared (IR), gel permeation chromatography, and elemental analysis. The antioxidation behavior of the as-synthesized PPDA in biodegradable castor oil was investigated using a rotary oxygen bomb test and pressurized differential scanning calorimetry. A theoretical calculation was conducted to investigate its antioxidation mechanism. PPDA was found to exhibit excellent oxidation resistance in castor oil at 150 degrees C, which effectively prolonged the oxidation induction time of the oil. The results obtained herein suggest that as with phenolic antioxidants, PPDA with a hindered structure effectively improves the antioxidation performance of the oil by enhancing the stability of nitrogen free radicals.