天然油脂不饱和结构氧化深度与自交联反应机理  

Relationship between oxidizing depth and cross-linking reaction of unsaturated natural oils

作　　者：马兆云 王忠辉[2,3] 周华龙[2,3] 尚迪[2,3] 黄茂枫 赵子星 

机构地区：[1]宁波海曙达韵轻化材料研究所,浙江宁波315021 [2]四川大学制革清洁技术国家工程实验室,四川成都610065 [3]四川大学皮革化学与工程教育部重点实验室,四川成都610065

出　　处：《中国皮革》2015年第15期5-9,24,共6页China Leather

基　　金：四川省科技厅应用基础计划项目;编号:2011JY0023

摘　　要：试验证明不饱和油脂的氧化深度对产物的黏度有很大影响。以豆油为例着重研究氧化深度与系统黏度增加的本质原因,具体考察温度、催化剂用量、空气流量对黏度的影响;油脂所含亚油酸、亚麻酸成分越多,随着氧化深度的加深,对提高过氧化极值PV*没有作用,反而使表观物性黏度增加;并由紫外吸收仪、激光拉曼仪进行了表征,随着氧化深度越深,其异构化、共轭化程度越明显,环化反应程度也越深,黏度剧增。Experiments show that the oxidization depth of unsaturated natural oil has a great influence on the viscosity of oxi- dized product. The essential reason of deep oxidization with increasing viscosity of soybean oil was studied. The influence of tem- perature, catalyst dosage and airflow on the viscosity was investigated. It shows that the linoleic acid and linolenic acid content has no contribution on the maximum peroxide value （PV ＊ ）with the oxidation increases while the apparent viscosity improves. Ultravi- olet- visible absorption spectrometry and Raman spectrometer were used to characterize the oxidation process. It indicates that with the oxidation increases the isomerization , conjugation as well as the cyclization of intramolecular and intermolecular tends to be more obvious and the viscosity increases.

关 键 词：不饱和油脂 氧化 共轭反应 环化反应 交联反应 仪器表征 

分 类 号：TQ641[化学工程—精细化工]