查询词典 hydrophobic

The hydrophobic monomers such as glycidyl octyl dimethylammonium chloride, glycidyl dodecyl dimethylammonium chloride, glycidyl tetradecyl dimethylammonium chloride was applied to the hydrophobic modification of two kinds of sodium cellulose sulfate in isopropyl alcohol under 65℃.The success of synthesis of a kind of novel amphoteric surfactant by FT-IR and NMR. 3. By the measuring surface tension of all kinds of amphoteric polymeric surfactants based on cellulose, the critic micelle concentration was obtained such as 0.4wt%、0.3wt%、0.25wt% and corresponding surface tension was about 30mN/m

通过动态接触角测量仪确定了各种纤维素表面活性剂的表面张力和临界胶束浓度，结果表明该类表面活性剂可与小分子表面活性剂的降低表面张力的能力相媲美，最低可达28.41 mN/m，随着疏水基中碳链的增长，降低表面张力的能力下降，而临界胶束浓度从0.4wt%相应降低0.25wt%；应用环境扫描电镜确定其不同浓度胶束形态，结果表明在较低浓度下形成棒状单分子胶束，随着浓度的升高，单分子胶束逐渐聚集成树枝状胶束，进一步提高浓度，则聚集成网状结构；此外，采用了高级流变仪对其溶液的流变性质进行了研究，结果表明其溶液属于剪切变稀流体，是高分子溶液特有的性质。

Results showed that extraction abilities depends on the hydrophobic of solutes which pK〓 values are similar, e. g. acetic, propionic, butyric and valeric acids, while pK〓 values affect dominantly the extraction abilities of acids with similar hydrophobic, e. g. formic, acetic, chloroacetic, dichloroacetic, and trichloroacetic acids. Meanwhile, diluents and TOA concentration also affect the extraction equilibria of acids through the specific basicity of TOA .

TOA对酸性差别很小的一元羧酸如乙酸、丙酸、丁酸、戊酸的萃取能力主要取决于羧酸的疏水性参数logP；TOA对疏水性参数差别较小的羧酸如甲酸、乙酸、一氯乙酸、二氯乙酸、三氯乙酸的萃取能力主要取决于羧酸的电性参数；稀释剂的种类、TOA的浓度都会影响TOA的表观碱度pH〓，并通过TOA的表观碱度影响羧酸的萃取平衡。

To study the relationship between the hydrophobic "tail" structure and thecharacterizations of Gemini surfactants, a new gemini surfactant CsH2s-α,ω-bis(dehydroabietylhydroxypropylteteramethylethylammonium Chloride),here s=2, wassynthesized. Dehydrogenated rosin as hydrophobic "tails" in the structure. The impact factorsin the two steps are discussed.

为研究gemini表面活性剂中疏水&尾巴&结构对性质的影响，本论文以脱氢松香酸和环氧氯丙烷为原料合成了中间体3-脱氢松香酰氧-2-羟丙基氯，再与四甲基乙二胺反应，得到一种以脱氢松香酰基为疏水链&尾巴&的对称gemini型双季铵盐阳离子表面活性剂：二氯化-N，N′-二(3-脱氢松香酰氧-2-羟丙基)四甲基乙二胺。

The hydrophobic association thickening behaviors are also remarkably dependent on the number and length of the hydrophobic block in polymer chain, Rheological properties were further studied as a function of polymer concentration, salinity, temperature and shear rate.

这种由分子间的疏水缔合作用而产生的疏水缔合增黏能力与疏水嵌段的数量和长度密切相关。同时进一步研究了聚合物浓度、盐浓度、温度和剪切速率对溶液黏度的影响。

The surface hydrophobicity of chicken heart apocytochrome c with different unfolded states has been compared by hydrophobic chromatography and by assessing their ability to bind a hydrophobic probe, 1,8-ANS.

鸡心脱血红素细胞色素c具有较强的自发折叠的能力，在一定条件下可以得到不同解折叠状态的鸡心脱血红素细胞色素c。

For the case of thermo-caused micellization, as temperature is lifted to above the LCST (about 35.2℃), micellar structures having hydrophobic aggregates of PNiPAAm grafts as the core and solvated HEC and PAA chains as the shell can be achieved because of the hydrophobic interaction of PNiPAAm grafts.

其次，研究了温度诱导胶束化行为，发现CNipAa共聚物在PNiPAAm链的LCST以上可以形成温度诱导的聚合物胶束。

The results of its intrinsic fluorescence spectroscopy and fluorescence phase diagram showed that when the guanidine hydrochloride concentration in denaturation solution was about 1.0 mol/L, there existed a partially folded intermediate of Bacillus amyloliquefaciens a-amylase during its unfolding procedure, which followed a three-state model; the result of its fluorescence probe showed that when the guanidine hydrochloride concentration in denaturation solution was about 1.0 mol/L, there existed some stable hydrophobic regions, which could interact with a hydrophobic reagent 8-anilino-1-naphthalene sulfonic acid, in the partially folded intermediate of Bacillus amyloliquefaciens a-amylase; and the results of fluorescence quenching using acrylamide and potassium iodide as quenchers showed the distribution of Trp residues in Bacillus amyloliquefaciens a-amylase in different denaturation solution, with the maximum number (8) of tryptophan residues in a partially folded intermediate Bacillus amyloliquefaciens a-amylase molecule could be quenched by potassium iodide; and the results of their protein electrophoresis and SEC showed that no aggregate or aggregate precipitation of Bacillus amyloliquefaciens a-amylase formed during the whole unfolding procedure of Bacillus amyloliquefaciens a-amylase induced by guanidine hydrochloride.

内源荧光光谱和荧光相图结果表明，当变性液中盐酸胍浓度约为1.0 mol/L时，芽孢杆菌a-淀粉酶的去折叠过程中出现一个部分折叠中间体，其去折叠过程符合&三态模型&；荧光探针结果表明，在溶液中盐酸胍浓度约为1.0 mol/L时，中间态芽孢杆菌a-淀粉酶分子中存在着能够与探针分子1-苯胺基-8-萘磺酸结合的稳定的疏水区域；荧光猝灭研究给出了不同程度变性的淀粉液化芽孢杆菌a-淀粉酶中的Trp的分布情况，结果表明中间态芽孢杆菌a-淀粉酶分子中能够被碘化钾猝灭的位于分子表面的色氨酸残基数目达到最大的8个；蛋白电泳和体积排阻色谱结果表明，在盐酸胍诱导的芽孢杆菌a-淀粉酶分子的整个去折叠过程中，不会以共价键或非共价键形式形成芽孢杆菌a-淀粉酶分子之间的集聚体或集聚体沉淀。

It is shown that the super-hydrophobic surface has the characters of no-droplet adherence, oleophilic and dropwise condensation. Based on above research, super-hydrophobic aluminous micro-channels are successfully fabricated by reasonable ameliorating preparation techniques and experiment conditions.

在制备铝片超疏水表面的研究基础上，通过对制备工艺和实验条件的合理改进最终制备出了具有超疏水内表面的铝微通道，并对比研究了水在超疏/亲水微通道的流动与传热特性。

Under those conditions, different of 3-alkoxy-2-hydroxypropyl starch of different drgree of substitution of hydrophobic group were prepared.The substitution of hydrophobic groupof the products was determined by a method of Zeisel reaction and gas chromatography.

在此条件下，制备了一系列疏水基取代度不同的3-烷氧基-2-羟基丙基淀粉，利用Zeisel反应-气相色谱法测定了产物的疏水基取代度。

Methods The effects of chitosan and calcium alginate fibers on haemostatic and wound-sticking property, the admixture of viscose and purified cotton or super absorbent resin on water absorbency, and the forming mode of hydrophobic nonwoven fabric and combining method of hydrophobic ethylene-propylene and viscose on waterproof ability were compared.

研究壳聚糖、壳聚糖－海藻酸钙盐复合纤维的止血与抗粘连效果，不同克重的粘胶纤维及其与脱脂棉、高吸水树脂复合材料的吸湿性能，丙纶及疏水乙丙纤维无纺布的成型方法及其与粘胶无纺布的复合方式时阻水性能的影响；测试了新型战创伤急救敷料的理化性能。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。