摘要
以超支化聚缩水甘油(HPG)和甲基丙烯酸缩水甘油酯(GMA)进行酯交换反应,得到一系列超支化聚缩水甘油甲基丙烯酸酯(HPG-MA)破乳剂,考察了添加量、破乳温度、沉降时间及相对分子质量对破乳性能的影响,并探究动态界面张力和破乳过程中油滴的破裂速率常数的变化,分析其破乳机理。结果表明,在60℃、沉降时间为40min、破乳剂的添加量为2000mg/L时,其脱油率达到90%。与商用破乳剂相比,超支化聚缩水甘油甲基丙烯酸酯因具有独特的超支化多位点结构,用作破乳剂时界面活性高、沉降时间短。
In this work,a series of methacrylated hyperbranched polyglycerol(HPG-MA)were synthesized through the transesterifivation reaction of polyglycerol(HPG)and GMA.The effects of demulsifier concentration,temperature,settling time and molecular weight on the performance of demulsifier were investigated,and the research of dynamic interfacial tension and rupture rate constant of oil droplets in the demulsification were also studied to analyze its demulsification mechanism.The results indicated that the oil removal rate reached 90%with the condition of 2000mg/L,30min and 60℃.Compared with traditional demulsifiers,it exhibited high interfacial activity and short settling time because of the unique hyperbranched and multi-point structure.
作者
张丽锋
詹宁宁
秦立娟
赵新星
周立山
滕厚开
方文军
ZHANG Lifeng;ZHAN Ningning;QIN Lijuan;ZHAO Xinxing;ZHOU Lishan;TENG Houkai;FANG Wenjun(School of Chemical Engineering&Technology,Tianjin University,Tianjin 300072,China;CNOOC Tianjin Chemical Research and Design Institute Company Limited,Tianjin 300131,China;CNOOC Energy Technology&Service Limited Drilling&Production Co.,Tianjin 300450,China;School of Chemical Engineering and Technology,Hebei University of Technology,Tianjin 300132,China;Department of Chemistry,Zhejiang University,Hangzhou 310058,Zhejiang,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2021年第6期3434-3443,共10页
Chemical Industry and Engineering Progress
基金
中国博士后科学基金(2019M661034)。
关键词
超支化聚合物
多位点结构
破乳机理
破乳剂
hyperbranched polymer
multi-point structure
demulsification mechanism
demulsifier
