文献类型：期刊文献

英文题名：Branched Hydroxyl Modification of SBS Using Thiol-Ene Reaction and Its Subsequent Application in Modified Asphalt

作者：Li, Xue-Kun[1,2];Chen, Guo-Shun[2];Duan, Min-Wei[2];Yang, Wei-Cheng[2];Tang, Song-Chao[1];Cao, Ya-Dong[3];Luo, Yong[2]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]Shanghai Res Inst Chem Ind Co Ltd, State Key Lab Polyolefin & Catalysis, Shanghai 200062, Peoples R China;[3]Shanghai Urban Construct Nichireki Special Asphal, Shanghai 200231, Peoples R China

年份：2017

卷号：56

期号：37

起止页码：10354

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20173904211066);WOS:【SCI-EXPANDED(收录号:WOS:000411659400015)】；

基金：This work is financially supported by the enterprise cooperation project of the Shanghai Research Institute of Chemical Industry Co., Ltd. (No. 20150701A).

语种：英文

外文关键词：Free radical reactions - Reaction kinetics - Asphalt - Styrene

摘要：Based on the thiol-ene radical addition reaction, the branched hydroxyl functionalized modified styrene-butadiene-styrene triblock copolymer (SBS-g-OH) was prepared. According to chemical structure characterization, the order of reactivity proved that 1,2-vinyls had a priority to react with 2-mercaptoethanol (MCH) at a low functionalization degree of SBS-g-OH. A novel reaction kinetics model was set up to describe the addition reaction between MCH and 1,2-vinyls; then the effect of reaction time, temperature, and initial concentration ratio of MCH to 1,2-vinyls on functionalization degree of SBS-g-OH were investigated. Subsequently the performances of modified asphalt were investigated, where the softening point, ductility, and needle penetration of SBS-g-OH modified asphalt were almost equal to that of SBS modified asphalt, while the dispersibility of polymer in asphalt and storage stability of modified asphalt had been improved obviously using SBS-g-OH with an appropriate functionalization degree.