乳化和成熟对水包十二烷非离子型纳米乳液聚集速率的影响
Influence of Creaming and Ripening on the Aggregation Rate of Non-Ionic Dodecane-in-Water Nanoemulsions
摘要：
探讨了在用Brij 30稳定的十二烷水包纳米乳液的聚集速率的测量过程中乳状液分层的可能影响。为此，合成了用中性浮力油（溴代十二烷）以及十二烷和溴代十二烷与角鲨烯的混合物制成的附加乳液。它的结论是，当成熟的效果被抑制时，浮力对絮凝率的评价的影响可以忽略不计。在不存在角鲨烯的情况下，存在成熟，并且观察到十二烷和溴代十二烷的絮凝速率的相当大的差异。然而，这种差异并不是由重力的影响造成的。
英文摘要：
The possible influence of creaming during the measurement of the aggregation rate of dodecane-in-water nanoemul- sions stabilized with Brij 30 is explored. For this purpose additional emulsions made with a neutral-buoyancy oil (bro- mo-dodecane) and mixtures of dodecane and Br-dodecane with squalene were synthesized. It is concluded that when the effect of ripening is suppressed, the influence of buoyancy on the evaluation of the flocculation rate is negligible. In the absence of squalene, ripening is present, and a sizeable difference in the flocculation rate of dodecane and bro- mo-dodecane is observed. However, this difference is not caused by the effect of gravity.
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