Phases confirmation of cloudy Silwet L-77 aqueous solution by dielectric relaxation spectroscopy

来源 :中国化学快报(英文版) | 被引量 : 0次 | 上传用户:zhaihuixinjie
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The phase transition of Silwet L-77 (a kind of siloxane surfactant) dilute aqueous solution with temperature was investigated by dielectric relaxation spectroscopy. In the initial heating process, a dielectric relaxation was found at about 106 Hz, which was considered as the interface polarization ascribed to the interface between water and liquid phases (Wand L1). With the temperature increasing further, a new dielectric relaxation was observed at about 104 Hz, which was assigned to the appearance of liquid crystal phase (Lα). According to the dielectric parameters fitted by Cole-Cole equation, the coexistence temperature of W, L1 and Lα was determined at about 37.0℃.
其他文献
报道了MBE生长的In1-x-yGaxAlyAs四元混晶中光学声子的喇曼散射实验结果.光学声子模的频率与强度的组分关系表明In1-x-yGaxAlyAs四元混晶中有3种光学声子模,即类InAs、类GaAs
用干涉法研究了热蒸发(PVD)方法制备的CdTe薄膜材料的红外光学特性.通过对不同基板温度和不同薄膜厚度CdTe薄膜样品的研究,确定了在薄膜沉积过程中基板温度和膜厚对CdTe薄膜红外光学特性的影响.发
基于高速逆流色谱( HSCCC)技术从玛咖中分离制备出两种芥子油苷,苄基芥子油苷( glucotropaeolin, GTL)和甲氧基苄基芥子油苷( glucolimnanthin,GLI)。使用正交设计试验对分离条件进行
建立豆干和调味品中二甲基黄、二乙基黄的高效液相色谱初步筛查方法和超高效液相色谱-串联质谱确证方法.样品用酸化乙腈提取,经旋转蒸发浓缩和分散固相萃取净化后,采用高效液
建立番茄中植物激素——水杨酸和赤霉酸的高效液相色谱-三重四极杆质谱检测方法.样品经乙酸-乙腈提取,采用C18固相萃取柱净化,C18色谱柱分离,0.5%甲酸-甲醇溶液作为流动相进行
The boundary condition,zero solids pressure at the top of a particle bed of maximum spoutable height,Hm,is shown to eliminate any resort to empiricism in the de
RuO2,IrO2 and PdO are the most frequently employed active oxides in titanium anode coatings,so studies on the kinetics of their crystal-growth are important for
For any n-dimensional compact Riemannian manifold(M,g)without boundary and another compact Riemannian manifold(N,h),the authors establish the uniqueness of the hea
Experimentalists,numerical modellers and reactor modellers need to work together.not only just for validation of numericaI codes.but also to shed fundamental li
Suzuki reaction of bromoallenes with arylboronic acids was successfully performed by using an air-stable hemilabile P-O coordinated cyclopalladated complex Pd(P