期刊
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
卷 28, 期 6, 页码 837-844出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01932690701341827
关键词
pickering emulsions; microfibrillated cellulose (MFC); hydrophobication; water-in-oil; emulsions; particle wettability
The properties of water-in-toluene emulsions stabilized solely by hydrophobized microlibrillated cellulose (MFC) were investigated. By varying the degree of surface substitution (DSS), the wettability of the MFC was altered. All emulsions prepared with MFC displayed excellent stability to coalescence. The stability to gravity-induced sedimentation increased with increasing MFC concentration, the highest stability being obtained with MFC of moderate hydrophobicity. Drop sizes increased with increasing DSS, with a corresponding decrease in stability to sedimentation. An increase in the toluene:water ratio at constant MFC concentration resulted in a decrease in the average drop size. For all emulsions, the polydispersity in drop size decreased with decreasing average drop diameter.
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