应用化学2012，Vol.29Issue(5)：571-575,5.DOI:10.3724/SP.J.1095.2012.00285
C12-3-C12·2Br及C12-3(OH)-C12·2Br水溶液的胶团聚集数及流变特征
Micelle Aggregation Numbers and Rheological Characterization of C12-3-C12·2Br and C12-3(OH)-C12·2Br in Aqueous Solution
摘要
Abstract
The micelle aggregation numbers of C12-3-C12·2Br and C12-3(OH)-C12 ·2Br were measured by the technique of fluorescence probe. It was found that the concentration of the Gemini surfactants had great influences on their micelle aggregation number, owing to the presence of hydroxyl group in spacer. When the concentrations were set as 5.5cmc, the aggregation number of C12-3(OH)-C12·2Br was 44.7 and was much greater than that of C12-3-C12 · Br(33. 2). The two surfactants followed the Newtonian flow with their shear rates y in the range of 0 - 1 875 s -1 for the concentrations of C12-3-C12·2Br and C12-3 ( OH) -C12 ·2Br up to 64 mmol/L and 54 mmol/L, respectively. Beyond these, the shear rates are higher than their critical values (γ* ) and then the flow transformed from Newtonian to non-Newtonian modes. In addition, the viscosity 17 increased with the increase of concentration accompanied with a sharp increase. It was found that the introduction of -OH into the spaces has barely effect on their flow behaviors but cause a slight increase of 77.关键词
Gemini表面活性剂/胶团聚集数/流变特征/联结链影响Key words
Gemini surfactant, micelle aggregation number, rheological characterization, spacer effect分类
化学化工引用本文复制引用
叶志文..C12-3-C12·2Br及C12-3(OH)-C12·2Br水溶液的胶团聚集数及流变特征[J].应用化学,2012,29(5):571-575,5.基金项目
江苏省表面活性剂与助剂工程研究中心基金资助项目(2009JSS018) （2009JSS018）
