环氧大豆油对聚苯乙烯-乙烯/丁烯-苯乙烯结构与性能的影响  

Effect of Epoxy Soybean Oil on the Structure and Properties of Styrene-b-Ethtlene-Co-Butylene-b-Styrene Copolymers

作　　者：张湘汉 朱君秋 冀峰 郭江彬 梁红文[2] 张爱民[3] 罗水源 Xianghan Zhang;Junqiu Zhu;Feng Ji;Jiangbin Guo;Hongwen Liang;Aimin Zhang;Shuiyuan Luo(College of Chemical Engineering and Materials Science,Quanzhou Normal University,Fujian Engineering and Research Center of Green and Envir onment-Friendly FunctionalFootwear Materials,Quanzhou 362000,China;Balin Petrochemical Co.,Ltd.,ChinaPetroleum&Chemical Corporation,Yueyang 414000,China;Polymer ResearchInstitute of Sichuan University,Chengdu 610065,China)

机构地区：[1]泉州师范学院化工与材料学院福建省绿色环保功能鞋材工程研究中心,福建泉州362000 [2]中国石油化工股份有限公司巴陵分公司,湖南岳阳414000 [3]四川大学高分子研究所,四川成都610065

出　　处：《高分子材料科学与工程》2021年第6期94-98,108,共6页Polymer Materials Science & Engineering

基　　金：福建省中青年教师教育科研项目(JT180366,JAT170488);泉州市科技计划项目(2017G017,2017ZT001,2017G044,2017G006,2019C106);泉州师范学院引进人才科研启动经费(H17015)。

摘　　要：系统研究了环保型增塑剂环氧大豆油(ESO)对聚苯乙烯-乙烯/丁烯-苯乙烯(SEBS)进行改性后的结构与性能。红外光谱结果表明,9 phr环氧大豆油添加到SEBS中,会在1750 cm^(-1)处出现新的特征吸收峰,但不会改变SEBS的链结构;小角X射线散射结果表明,环氧大豆油与SEBS相互作用会影响聚集态结构,体现在SEBS相间距由56.07 nm增加到59.25 nm,微相尺寸分布增宽,导致SEBS改性后的黏度显著降低,体现在200℃时黏度由19186.8 Pa·s降低到8111.5 Pa·s;同时起始分解温度从389℃降低到354℃,玻璃化转变温度从-29.6℃降低到-34.4℃,SEBS热稳定性降低,分子链柔性增加,结晶度降低,拉伸强度从22.4 MPa降低到20.6 MPa。The structure and properties of styrene-b-ethtlene-co-butylene-b-styrene copolymers(SEBS)modified with epoxidized soybean oil(ESO)were studied.The results of FT-IR show that when 9 phr epoxy soybean oil was added into SEBS,a absorption peak appears in the range of 1750 cm^(-1).Small angle X-ray scattering(SAXS)results show that the interaction between epoxidized soybean oil and SEBS could affect the aggregation structure of SEBS,which reflects that the interphase distance of SEBS is increased from 56.07 nm to 59.25 nm and the size distribution of microphase is widened.This would lead to the decrease of viscosity after ESO modification,which reflects that the viscosity at 200℃is decreased from 19186.8 Pa·s to 8111.5 Pa·s.At the same time,the initial decomposition temperature is decreased from 389℃to 354℃,the glass transition temperature is decreased from-29.6℃to-34.4℃,the thermal stability of SEBS is decreased,the molecular chain flexibility is increased,the crystallinity is decreased,and the tensile strength is decreased from 22.4 MPa to 20.6 MPa.

关 键 词：环氧大豆油 聚苯乙烯-乙烯/丁烯-苯乙烯 聚集态结构 流变性能 热性能 力学性能 

分 类 号：TQ334[化学工程—橡胶工业]