针对长时间稳定的无表面活性剂纳米乳液优化聚焦超声波参数的研究
1Department of Chemical and Biomolecular Engineering, College of Engineering Yonsei University, 50 Yonsei Ro, Seodaemun Gu, Seoul 038722, Republic of Korea.
Ultrasonics
|September 15, 2024
概括
研究人员使用超声波技术开发出稳定,无表面活性剂的乳液. 这种方法避免了有害的乳化剂,产生了稳定的油在水乳液,颗粒大小约为100纳米,表面电荷超过-40mV.
科学领域:
- 材料科学 材料科学 材料科学
- 合体和表面化学
背景情况:
- 稳定的乳液在化品,制药,食品和药物输送中至关重要.
- 传统的乳液依赖于表面活性剂 (乳液剂),这些表面活性剂可能会损害健康和环境.
- 表面活性剂也会对乳液特性产生负面影响,限制了应用.
研究的目的:
- 开发一种不使用表面活性剂制造稳定乳液的方法.
- 研究超声波频率和输出功率对乳液特性的影响.
- 确定生产稳定,没有表面活性剂的乳液的最佳条件.
主要方法:
- 在不同频率 (250-1000 kHz) 和输出功率 (50-150 W) 的超声波设备中制造了六种含油量为 1% 的乳液.
- 分析了油颗粒大小分布,泽塔潜力,微观结构和乳液稳定性.
- 在准备后立即评估乳液,并在25°C下3天后进行评估.
主要成果:
- 在特定条件下,在没有相位分离或粒子聚合的情况下实现稳定的乳液.
- 确定为400 kHz和150 W的最佳条件,产生具有~100 nm粒子大小和> -40 mV表面电荷的乳液.
- 与传统方法相比,在乳液稳定性方面取得了显著的改进.
结论:
- 通过使用超声波技术,成功制造出稳定,无表面活性剂的乳液.
- 拟议的方法为传统的表面活性剂基乳液提供了可行的替代方案.
- 这一进步有可能彻底改变各种行业的乳液开发和应用.
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