- 更多网络例句与胶束相关的网络例句 [注:此内容来源于网络,仅供参考]
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Two possible evolution mechanisms of a multicompartment micelle with a ring/cogwheel core are identified, large cylindrical micelle curling then closing up and disc-like micelle perforation.
不同的初始混合状态改变了混合胶束的形成路径,虽然胶束最终的大体形貌几乎没受到什么影响,但胶束的微细结构却有差异。
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In reversed micelle the dye showed characteristics of two monomolecular states, the balance between which could be affected by all factors investigated above.
主要研究了反胶束中菁染料的光谱性质,确定了反胶束中菁染料的存在状态,以及反胶束ω值,水团微组份及温度等对菁染料吸收及荧光光谱性质的影响。
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Self-assembled nanomicelles of N -cholesterol succinyl O -carboxymethyl chitosan were prepared by probe sonication method. The amphiphilic property and the critical micelle concentration of CCMC were determined by fluorescence probe technique; the morphology and the size of CCMC self-assembled nanomicelles were analyzed by transmission electron microscopy and the dynamic laser light scattering.
以 N -胆甾醇琥珀酰基- O -羧甲基壳聚糖(CCMC,胆甾醇基取代度6.9%)为原料,在水溶液中通过探头超声处理制备其自组装凝胶纳米胶束,采用稳态荧光探针法考察临界胶束浓度,并通过透射电镜和动态激光散射仪检测胶束的形态大小。
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First, we synthesized a new monomer,1-(3\'-aminopropyl)-4-acrylamido-1,2,3-triazole hydrochloride,via click chemistry and its block copolymer with NIPAM, PNIPAM-b-PAPAT,via RAFT polymerization.On the basis of the reaction between amine groups of the PAPAT block and glutaric dialdehyde,core cross-linked and shell cross-linked micelles with inverted structures were prepared at 25℃and 50℃,respectively.
借助于PAPAT嵌段上含有的氨基及PNIPAM嵌段的LCST效应,我们在其20℃和50℃的水溶液中分别制备了CCL胶束和SCL胶束,进一步地,我们利用由Click反应产生的1,2,3-三氮唑环对金属的强络合和稳定作用,分别对CCL胶束的内核与SCL胶束的外壳用金纳米粒子进行选择性修饰。
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The diagrams indicate that microemulsions can only be formed with a certain Combination of SDS and n-bulanol. A stretch of microemulsion domain changing continuously from direct micelles to bicontinuous structures and to reverse micelles exists when the surfactant to cosurfactant ratio is comparatively low, while the direct micelle area is separated from the reverse micelle area by a mesomorphic medium when the surfactant to cosurfactant ratio is comparatively high.
结果表明:只有当SDS与正丁醇配比在一定范围内才形成微乳状液;当SDS含量较低时,存在由正胶束经过双连续结构到逆胶束的大片微乳状液区;当SDS含量较高时,正胶束和逆胶束微乳状液之间被液晶相所分割。
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The lowest surface tension of N_xB solution was better at 25℃, and lowest surface tension would down with carbon . cmc( critical micelle concentration) and γ_ in N_(12)B are 4.1 × 10~(-4)mol/L, 24.5 mN.m~(-1),what was smaller than LAS . The cmc of N_(12)B- NaCl are down with NaCl up.The surface tension and cmc of N_(12)B and N_(16)B are higher than that of N_(12)OB and N_(16)OB because of hydrophilic group ,but that of N_(12)B is lower than that of N_(16)B because of hydrophobic group .5. The borate structure and semipolar bond were studied in different pH by infrared spectrum .It indicated that N_xB and N_xOB have not semipolar bond at pH
4、25℃,N_xB系列都有较低的表面张力,并随碳原子数的增加而最低表面张力下降。N_(12)B比同碳原子数的十二烷基苯磺酸钠的最低表面张力34.5mN/m低,且临界胶束浓度为4.1×10~(-5)mol/L,也比LAS低,且随着NaCl浓度的增加而略有下降,比较N_(12)B和N_(16)B,由于C_(16)疏水基的异构体使N_(12)B的临界胶束浓度和临界胶束浓度时的表面张力γ_(cmc都低,由于增加了亲水基团使得N_(12)OB和N_(16)OB的表面张力和临界胶束浓度都要高于N_(12)B和N_(16)B。
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The result shows that for both PCL homopolymers and PCL-b-PEG block copolymers, the spherulitic linear growth rate first increases with molecular weight and reaches a maximum, then decreases as molecular weight increases. Crystallization temperature has greater influence on the spherulitic growth rate of polymers with higher molecular weight.
当自由PEG在水中的占有面积S_o与单根PEG链段所占有的表面积S的比值S_o/S的值接近或小于3时,PEG链段对胶束形状的影响较小,PCL嵌段的影响占主导地位,易形成片状胶束;当S_o/S的值在3-10之间时,随着PCL嵌段分子量的增加,PCL-b-PEG嵌段共聚物在水溶液中自组装形成类似球状、棒状和蠕虫状胶束,是PEG与PCL嵌段共同的作用的结果;当S_o/S的值大于10时,易形成球状胶束。
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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。
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The sizes of the self-assembly micelles of the amphiphilic block copolymers and the effects werestudied by dynamic light scattering and UV-visible spectrophotometer. The micelle sizes werelargely influenced bythe hydrophobic chain content in the copolymer, the properties of the solvent and the copolymer concentration in the organic phase. The morphology of the micelles was investigated by transmission electron microscopy. Theresults showed that the micelles appeared spheres with inner core and outer shell. The critical association concentrations were determined by pyrene monomer fluorescence probe technology. The degradability of copolymer was studied by the loss of the intrinsic viscosity in the degradation process. The results indicated that the degradation rate of PECL was slower thanthat of PELLA and PEDLLA. The stability of the copolymer micelle dispersion was examined by measuring the critical flocculation concentration, which gradually decreased with increasing the content of thehydrophobic chain in the copolymer. The rheological results showed thatthe viscosity ofthe micelle dispersion with higher content of PEG segments was firstly decreased and then increased with the increasingthe temperature. Otherwise, the variation of viscosity was irregular. The viscosity of the micelle dispersion increased with the increase of the electrolyte (Na 2SO 4) concentrations. Polymer micelles paclitaxel was prepared by self-emulsification/solvent evaporation method and solid dispersion technique with amphiphilic block polymers as the carrier material.
运用动态光散射和紫外分光光度计研究了两亲性嵌段共聚物自组装胶束的粒径及其影响因素,结果表明,自组装胶束的形成机理受制备方式的控制,胶束的粒径随着共聚物相对分子质量或疏水嵌段相对分子质量和有机相中共聚物浓度的增大而增大,随着有机溶剂的水溶性的增强而减小;采用透射电镜观察胶束的形态结构,发现胶束呈具有核壳结构的均匀球形;采用芘荧光探针法测两亲性嵌段共聚物的临界聚集浓度;通过降解过程中共聚物特性粘度的变化研究两亲性共聚物的降解性能,发现与PELLA和PEDLLA的相比,PECL 降解速率较慢;随着共聚物中疏水嵌段含量的增大,纳米分散液的稳定性逐渐下降;PEG含量高的PEDLLA纳米分散液随着温度的升高,纳米分散液的粘度先下降然后增大,反之,没有规律性,且随着电解质Na 2SO 4浓度的增大,体系粘度增大。
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For the case of pH-induced micellization, as pH of the solutions decreases to below 4.6, micellar structure having insoluble complexes of PAA/PNiPAAm as the core and solvated HEC chains as the shell can be obtained due to hydrogen-bonding complexation between the proton-acceptors in PNiPAAm and the proton-donors in PAA.
首先发现pH诱导胶束形成的临界pH值在4.6附近,证实了胶束化机理是由于低pH下PAA接枝链上的质子给体与PNiPAAm支链上的质子受体间的氢键络合形成胶束的&核&,HEC不参与络合形成胶束的&壳&。
- 更多网络解释与胶束相关的网络解释 [注:此内容来源于网络,仅供参考]
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reverse micelle:反胶束
反胶束(Reverse Micelle)是水溶液同含有适量表面活性剂的有机溶液相混合后由自组装形成的一种油包水的溶液结构. 我们在混合前的水溶液中加入金属离子,通过溶液混合使该金属离子被表面活性剂转移到反胶束中,然后往混合液中加入还原剂,
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intermicellar swelling:胶束膨胀
intermicellar equilibrium 胶束间平衡 | intermicellar swelling 胶束膨胀 | intermigration 相互迁移 中间运移
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vermiculate glues:蠕虫状胶束
柔性棒状胶束 flexibility claviform glues | 蠕虫状胶束 vermiculate glues | 乳滴聚结实验 emulsion drop aggregation test
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flexibility claviform glues:柔性棒状胶束
溶液 solution | 柔性棒状胶束 flexibility claviform glues | 蠕虫状胶束 vermiculate glues
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micellar:胶束的;微胞的
micellar structure 胶束结构 | micellar 胶束的;微胞的 | micelle micella 的复数
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micellar phase:胶束相
此外,胆汁盐可促进小肠内胶束相(micellar phase)的形成,后者可提高干日粮中脂肪酸的消化率(Bayler和Lewis,1963). 这种胶束相能将脂肪消化后产生的终产物经小肠粘膜转运人体内(Gurr和James,1971).
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micellar structure:胶束结构
mica 云母 | micellar structure 胶束结构 | micelle 胶粒,胶束
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micellar space:胶束空间
micell weight 胶束量 | micellar space 胶束空间 | micelle 胶团
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micella:胶束,胶粒
micecoatedpaper 云母涂布纸 | micella 胶束,胶粒 | micellarstructure 胶束结构
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micelles:胶束
为了进一步探讨铂的成长机制,研究人员将紫质光催化剂加在胶束(micelles)和脂质体(liposomes)上,当催化剂加在胶束上,铂原子会在胶束周围形成球形树突状奈米结构,它的直径为6到200奈米,