科研之友
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摘要
Aqueous dispersions of nanoscale organic pigments were successfully prepared through ball milling and ultrasonication of two test pigments in the presence of dispersing agents. Critical factors included the mode of preparation, time of ball milling, type of dispersing agent, and the molecular structure of the pigments. These dispersions were characterized by morphological structures and average particle size and quality was evaluated by shelf-life stability using digital images. Results showed that use of sodium dodecyl sulfate (SDS) maintained a high stability of dispersion with storage. The size and stability of nanoscale dispersion were greatly influenced by molecular structure of the pigments. Ultrasonication was helpful in decreasing average particle size.
- 出版日期2010-4
