State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
Carbohydr Polym. 2014 Nov 4;112:695-700. doi: 10.1016/j.carbpol.2014.06.051. Epub 2014 Jun 27.
The aim of this study was to investigate D-limonene Pickering emulsion stabilized by cellulose nanocrystals (CNCs) and factors that may affect its properties. CNCs were prepared by ammonium persulfate hydrolysis of corncob cellulose, and D-limonene Pickering emulsions were generated by ultrasonic homogenizing method. The morphology and size of the prepared emulsions with different CNCs concentrations were studied by optical microscopy and laser light diffraction. In addition, factors that may affect the stability of emulsions such as ionic concentration, pH and temperature were also studied. As indicated by the experiment data, when temperature rose, the stability to of emulsions would be increased, and the stability of emulsions was reduced with low pH or high salt concentration due to electrostatic screening of the negatively charged CNC particles. In conclusion, high stability of D-limonene Pickering emulsions could be obtained by CNCs.
本研究旨在探讨由纤维素纳米晶体（CNC）稳定的 D-柠檬烯 Pickering 乳液，以及可能影响其性能的因素。CNC 是通过过硫酸铵水解玉米芯纤维素制备的，D-柠檬烯 Pickering 乳液是通过超声匀化法生成的。通过光学显微镜和激光光散射研究了不同 CNC 浓度下制备的乳液的形态和粒径。此外，还研究了可能影响乳液稳定性的因素，如离子浓度、pH 值和温度等。实验数据表明，随着温度的升高，乳液的稳定性会增加，而在低 pH 值或高盐浓度下，由于带负电荷的 CNC 颗粒的静电屏蔽作用，乳液的稳定性会降低。总之，通过 CNC 可以获得 D-柠檬烯 Pickering 乳液的高稳定性。
