直链烷基苯磺酸钠/水二元体系相行为及流变性能研究  

Study on Phase Behaviov and Rheology of LAS/H_2O System

作　　者：王红霞[1] 陆用海[1] 

机构地区：[1]中国日用化学工业研究所,山西太原030001

出　　处：《日用化学品科学》2000年第S1期19-23,共5页Detergent & Cosmetics

摘　　要：用偏光显微镜、差热分析仪、PC -80 0探头式比色仪、同心转筒式粘度计、FX -90Q核磁共振仪和RS75RheoStress流变仪测定了直链烷基苯磺酸钠 /水 (LAS/H2 O)体系在 0℃～ 90℃之间的相结构、浊度曲线、流变性质。用差热分析仪确定了层状液晶 (La)相与固体相 (S)的相边界。结果表明 :在LAS/H2 O体系中 ,随表面活性剂浓度增大由胶束溶液相 (L1)→La +L1→La→La +S→S ,整个相区无六角相 ;升温有利于水合表面活性剂固体相向层状液晶和层状液晶分散体相转变 ;清点曲线高于浊点曲线 ;在清 (浊 )点两侧液晶分散体结构无明显变化 ,但个体变大 ,并有一定的交联结构 ;Diagram of LAS/H 2O between 0℃-90℃ was built with polarized light microscope and differential thermal analyzer ; Transmittance curve was obtained with PC-800 probe colorimeter; FX-90QNMR meter and concentric cylinder rotary viscometer and RS-75 RheoStress rheometer examined different behavior between clear and cloud range .The results are as following :① With increase of LAS ,thephases are in turn L1 (micelle solution ) →La+L1 →La(Lamella) →La+S →S(solid) in LAS/H 2O system;② Increasing temperature is a...

关 键 词：表面活性剂 阴离子表面活性剂 液晶 相行为 流变性 清点(浊点) 

分 类 号：O642[理学—物理化学]