排序方式: 共有25条查询结果,搜索用时 15 毫秒
21.
22.
23.
利用冷冻刻饰电子显微镜(FF-TEM)技术研究了两亲分子溶液不同有序聚集体的结构, 特别对一些两亲分子溶液体系形成的泡囊结构进行了详细的研究, 探讨了聚集体结构的演变规律. 对无剪切力下化学反应诱导L3-相(海绵相)到层状Lα-相, 手振荡层状Lα-相到多双层泡囊相及高剪切力作用下多双层泡囊相到单双层泡囊相的结构演变进行了冷冻刻饰电子显微镜追踪研究. 首次报道了-诱导的单链长表面活性剂溶液中泡囊相的形成. 相似文献
24.
Self-assemblies of amphiphiles in solutions were investigated by using freeze-fracture transmission electron microscopy (FF-TEM). Especially, vesicles were characterized by FF-TEM and the transition of self-assemblies was determined. The stacked lamellar La-phase was prepared without shear forces by a chemical reaction. The stacked lamellar La-phase can be transformed into multilamellar vesicles by the shearing forces that occur when the stacked lamellar La-phase sample is turned upside down a few times. The multilamellar vesicles can also be transformed into unilamellar vesicles by high shearing forces. These transitions were demonstrated by FF-TEM measurements. 2n2+-induced vesicle formation in the single-chain surfactant solutions was first achieved. 相似文献
25.
首先研究Brij35(十二烷基聚氧乙烯(23)醚)/油酸钠/油酸/水体系的拟三元相图, 发现该体系最大的特点是溶致液晶占相图总面积的2/3. 对O/W型微乳液进行流动曲线研究, 属于牛顿流体. 对溶致液晶体系开展了偏光显微镜, SAXS, 2H-NMR等方法的研究. 当体系组成沿着相图中AA¢线改变时, 其液晶结构变化的顺序是, 立方状液晶→立方状与层状液晶共存→层状液晶→层状液晶与六角状液晶共存→六角状液晶. 并且对上述体系系统地开展了流变性质的研究. 其结果再一次证实液晶结构随着体系中某组分的改变而发生变化. 同时还得到立方液晶和六角状液晶的晶格参数, 分别为10.53和5.68 nm. 相似文献