1) micellar micropolarity
胶团微极性
1.
Critical micelle concentration(CMC),micelle aggregation numbers(N) at different surfactant concentrations(c) and micellar micropolarity of three sodium alkyl-benzyl homogeneous polyoxyethlenated propane sulfonates(ABEPS) were determined by steady-state fluorescence probe method in which pyrene was used as fluorescence probe and benzophenone was used as quencher.
以芘为荧光探针、二苯甲酮为猝灭剂,用稳态荧光探针法测定了合成的3种高纯的烷基苄基聚氧乙烯醚丙烷磺酸钠的临界胶束浓度、不同表面活性剂浓度下的胶团聚集数和胶团微极性。
2) micelle
[英][mai'sel] [美][maɪ'sɛl]
微团,胶团
3) polar group
极性基团
1.
Surface modifiers with different polar groups,such as,stearic acid diethanolamine,di(β-ethoxyl) stearamine and dioctyl dithiophosphoric acid diethanolamine,were used to prepare three kinds of LaF3 nanoparticles in the mixture solvent of water-ethanol.
以不同极性基团的十八酸二乙醇胺、双β羟乙基十八胺及二辛基二硫代磷酸二乙醇胺为表面修饰剂,在醇-水体系中制备了3种纳米氟化镧粒子,通过透射电镜(TEM)及热重仪(TG)研究了纳米氟化镧粒子的形貌及表面修饰情况,采用离心沉降法考察了纳米粒子在基础油中的分散稳定性,用四球机考察了它们的摩擦学性能,最后采用扫描电子显微镜(SEM)和俄歇电子能谱仪(AES)分析了磨痕表面。
2.
This paper synthesized a kind of oil-solubility viscosity reducer including polar groups and surfaceactive groups.
合成了一种集较强极性基团和表面活性基团为一体的油溶性降黏剂。
3.
At present,pepole often get electrorheological materials with high shear stress by introducting polar groups to inorganic materials,but the effect of content of polar groups and the existence of them on the electrorheological effect are still unclear.
极性分子修饰无机粒子是制备高剪切力电流变材料的常用方法,但目前还未弄清极性基团的存在方式和数量对电流变性能的影响;悬浮粒子粒径大小对巨电流变材料与传统电流变材料性能影响上的显著差异也成为电流变材料领域研究的热点。
4) group polarity
基团极性
5) acid ethanolamine salt
极性基团
1.
A series of aqueous soluble anti-rust additives of aliphatic acid ethanolamine salts were synthesized and studied.
合成并研究了水溶性有机羧酸醇铵盐类防锈剂, 系统地考察了烷链的长度、极性基团、羧基的个数对防锈性能和溶解度的影响。
6) polar functional groups
极性官能团
1.
The surface processing of the multi-walled carbon nanotubes(MWNTs) was carried out by an anodic oxidation method in order to increase the surface polar functional groups.
采用阳极氧化法对多壁碳纳米管(MWNTs)进行表面处理以提高其表面极性官能团含量。
补充资料:极性翻转
分子式:
CAS号:
性质:又称极性转换,极性翻转。系指有机合成反应中采取的某种步骤,使反应物分子中碳原子的电荷发生翻转,以利碳碳键的生成。例如醛或酮的羰基碳带有正电荷,可与亲核试剂如RMgX(格利雅试剂)反应,但不与亲电试剂如RX(卤代烷)反应。为此需将羰基碳的正电荷转换为负电荷才行。RCHO中的羰基碳带有正电荷,转变为后,则带负电荷,因而可与RX反应生成,水解即成,但不能由RCHO与RX直接生成。
CAS号:
性质:又称极性转换,极性翻转。系指有机合成反应中采取的某种步骤,使反应物分子中碳原子的电荷发生翻转,以利碳碳键的生成。例如醛或酮的羰基碳带有正电荷,可与亲核试剂如RMgX(格利雅试剂)反应,但不与亲电试剂如RX(卤代烷)反应。为此需将羰基碳的正电荷转换为负电荷才行。RCHO中的羰基碳带有正电荷,转变为后,则带负电荷,因而可与RX反应生成,水解即成,但不能由RCHO与RX直接生成。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条