反相气相色谱技术表征丁苯橡胶表面性质  

Characterization of surface properties of SBR by using inverse gas chromatography technology

作　　者：王强[1] 陈亚丽[1] 刘睿婷[1] 施玉格[1] 张正方[1] 唐军[1] 

机构地区：[1]新疆大学理化测试中心,新疆乌鲁木齐830046

出　　处：《弹性体》2011年第5期70-73,共4页China Elastomerics

基　　金：新疆大学石油天然气精细化工重点实验室开放课题基金资助(XJDX0908-2010-05)

摘　　要：采用反相气相色谱技术,以丁苯橡胶(SBR)作为固定相,分别测定分子探针在不同温度下通过SBR表面的保留时间,并计算出SBR表面色散自由能在303K、313K、323K、333K、343K下分别为47.50,46.58,46.03,45.49和45.23 mJ/m2,其表面色散自由能随温度的升高呈线性降低。SBR Lewis酸常数Ka为0.35,碱常数Kb为1.55,为两性弱碱性材料。Inverse Gas Chromatography technology was applied to determine the retention time on Styrene Butadiene Rubber（SBR） at different temperatures.In this method,the polymer material acted as the stationary phase,and free energy and Lewis number of polymer were figured out base on the data of retention volume.It was found the dispersive component of free energy of SBR was 47.50,46.58,46.03,45.49 and 45.23 mJ/m2 at 303K、313K、323K、333K and 343K,respectively.The surface free energy decreased linearly with the temperature increased.The Lewis acidic number Ka of SBR was 0.35,and basic number Kb was 1.55.The result meant that SBR had a significant amphoteric behaviour with predominantly basic character.

关 键 词：反相气相色谱 酸碱性质 表面色散自由能 丁苯橡胶 

分 类 号：TQ333.1[化学工程—橡胶工业] TQ330.7