| 刘小英,俞马宏.化学通报,2015,78(8):753-756. |
| 阴离子型石蜡乳液的制备与表征 |
| Preparation and Characterization of Negative Ionic Paraffin Emulsions |
| 投稿时间：2014-10-09 修订日期：2015-01-12 |
| DOI： |
| 中文关键词: 阴离子型石蜡乳液 硬脂酸 转相乳化法 多分散性 乳液粒径 |
| 英文关键词:Negative ionic paraffin emulsions, Stearic acid, Emulsion inversion point method, Polydispersity, particle size |
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| 中文摘要: |
| 以固体切片石蜡为原料，硬脂酸为单一乳化剂，采用转相乳化法制备了阴离子型石蜡乳液。实验结果表明，单一阴离子型乳化剂的乳化效果较好，可以得到平均粒径小(1μm左右)，多分散性低(多分散性指数2左右)的较稳定的石蜡乳液。通过单因素实验考察了乳化剂用量、乳化水用量、乳化时间、乳化温度等对石蜡乳液性能的影响，得出最佳工艺条件∶乳化剂用量7%、乳化水用量82%、乳化时间25min、乳化温度80℃。在此条件下，研究了加水方式、pH对石蜡乳液粒径的影响。少量多次的加水方式、pH=9.9制得的乳液平均粒径可达到0.62μm。 |
| 英文摘要: |
| Negative ionic paraffin emulsions stabilized by stearic acid were prepared using the emulsion inversion point method (EIP). The results showed that single emulsifiers, which could provide good performance for paraffin emulsions, produced stable paraffin emulsions with small particle size (about 1μm) and low polydispersity (polydispersity index was about 2) . The effects of emulsifier dosage, water dosage, emulsifying time, and emulsifying temperature on the paraffin emulsion properties were investigated by single factor experiment. The optimum conditions were obtained and showed as the following: emulsifier dosage 7% (ω), water dosage 82% (ω), emulsifying time 25min, and emulsifying temperature 80℃. Additionally, the effects of adding method and pH on the particle size of paraffin emulsions were also studied. The optimal particle size of the prepared paraffin emulsions could only be obtained under the condition of pH=9.9 and the distilled water was added for several times, which was 0.62μm. |
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