摘要
合成了一系列直链烷基聚氧丙烯醚硫酸钠(C_(c)P_(p)S,c=8或16时,p=9;c=12时,p=3,6或9)并鉴定了其结构.与十二烷基硫酸钠(SDS)类似,C_(12)P_(9)S在氧化铝上的饱和吸附量以及对阳离子染料亚甲基蓝的吸附增溶行为共同证实该延展型表面活性剂在表面上形成了双层吸附胶束,但由聚氧丙烯(PPO)连接基导致的橄榄球状分子及其导致的较大分子吸附面积,使其吸附能力及其对亚甲基蓝的吸附增溶能力均稍弱于SDS.C_(12)P_(9)S@Al_(2)O_(3)对弱极性分子1-苯乙醇和难溶性分子苯乙烯的吸附增溶能力均明显强于SDS,而且对1-苯乙醇的吸附增溶量达到SDS@Al_(2)O_(3)的8.5倍,说明1-苯乙醇主要被增溶在C_(12)P_(9)S双层吸附胶束中PPO连接基所在的膨大部位,这使延展型表面活性剂改性的氧化铝在废水处理和药物传递系统等领域具有潜在的应用前景.
A series of sodium linear alkyl polyoxypropylene ether sulfates(C_(c)P_(p)S,c=8 or 16,p=9;c=12,p=3,6 or 9)was synthesized and structurally identified to investigate the formation of admicelles of extended surfactants on alumina and the related adsolubilization.The formation of bilayer admicelles of C_(12)P_(9)S on alumi⁃na was identified by the adsolubilization result of cationic dye methylence blue(MB)in comparison with sodium dodecyl ether sulfate(SDS),but the adsorption capacity of C_(12)P_(9)S and adsolubilization capacity of MB were both less than SDS for its rugby-shaped molecule caused by polyoxypropylene(PPO)spacer.On the con⁃trary,C_(12)P_(9)S@Al_(2)O_(3) showed stronger adsolubilization capacities of weak polar PA molecules and water-insolu⁃ble ST molecules than those of SDS evidently.Moreover,the adsolubilization capacity of PA by C_(12)P_(9)S@Al_(2)O_(3) was 8.5 times of SDS@Al_(2)O_(3),which means that PA molecules were adsolubilized as expected in the swollen PPO domains in bilayer admicelles of C_(12)P_(9)S on alumina,and makes extended surfactant modified alumina po⁃tential application prospects in some fields such as wastewater treatment and drug delivery systems.
作者
胡学一
韩璐璐
方云
夏咏梅
HU Xueyi;HAN Lulu;FANG Yun;XIA Yongmei(Key Laboratory of Synthetic and Biological Colloids,Ministry of Education,School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2021年第3期843-849,共7页
Chemical Journal of Chinese Universities
基金
国家重点研发计划项目(批准号:2017YFB0308904)资助.
