文献类型：期刊文献

英文题名：Effect of Spacer Length between Phenyl Pendant and Backbone in Comb Copolymers on Flow Ability of Waxy Oil with Asphaltenes

作者：Li, Tao[1];Xu, Jun[1];Zou, Run[1];Jiang, Hejian[1];Wang, Junyou[1];Li, Li[1];Stuart, Martien A. Cohen[1];Prud'homme, Robert K.[2,3];Guo, Xuhong[1,4]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA;[3]Princeton Univ, Princeton Mat Inst, Princeton, NJ 08544 USA;[4]Shihezi Univ, Engn Res Ctr Mat Chem Engn Xinjiang Bingtuan, Xinjiang 832000, Peoples R China

年份：2017

卷号：56

期号：44

起止页码：12447

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20174604398785);WOS:【SCI-EXPANDED(收录号:WOS:000415028300003)】；

基金：We acknowledge the financial support of National Natural Science Foundation of China (21476143, 51003028), PetroChina Innovation Foundation (2016D-5007-0211), the Open Project of State Key Laboratory of Shihezi University (2016BTRC004), and 111 Project Grant (B08021). We also highly appreciate Petrochina Liaohe Oilfield Company for providing oil samples and technological support.

语种：英文

外文关键词：Temperature - Elasticity - Yield stress - Paraffins - Crude oil - Crystallization - Petroleum transportation

摘要：Waxy crude oil containing large amounts of paraffins often results in various difficulties in extraction and transportation, especially at low temperature. Comb-type copolymers with phenyl pendants were found to be able to improve the flow ability of waxy oils effectively. To investigate the influence of spacer length between phenyl pendant and polymer backbone in comb copolymers on the flow ability of waxy oil, poly(alpha-octadecene-co-maleic acid phenyl alkyl amide)s with various spacer lengths were synthesized by modification of poly(alpha-octadecene-co-maleic anhydride) with aniline, phenethylamine, phentermine, and phenyl-undecanoicamide. Their effects on the morphology and crystallization of model and crude oils were observed by polarized light microscopy and DSC. The flow ability of both oils in the presence of copolymers was studied by means of rheology, including measuring yield stress, viscosity, and thixotropic properties. It is found that the spacer length remarkably affects the rheology and wax crystallization behaviors for both oils. The copolymer with a longer spacer can provide better flexibility of phenyl pendants to disperse asphaltenes more effectively, and the long spacer can cocrystallize with long-chain paraffins.