在微流下形成非球形纤维素酸微粒
Kurumi Mori1, Takaichi Watanabe1, Tsutomu Ono1
1Department of Applied Chemistry, Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, 3-1-1, Tsushima-naka, Kita-ku, Okayama 700-8530, Japan.
Langmuir : the ACS journal of surfaces and colloids
|December 19, 2024
概括
研究人员开发了一种微流体方法,以创建非球形纤维素酸微粒. 通过控制Péclet数 (Pe) 和滴滴位置,可以准确地预测药物输送等应用的形状.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 流体动力学 流体动力学
背景情况:
- 非球形粒子在表面积和应用方面具有优势,如药物输送,催化和吸附.
- 准备非球形颗粒的传统方法具有局限性.
- 微流体技术可以精确控制颗粒制造.
研究的目的:
- 开发一种简单的微流体方法,用于制造非球形纤维素酸 (CA) 微粒.
- 为了研究流速比率和连续相组成对粒子形状的影响.
- 建立基于微流体参数的粒子结构预测模型.
主要方法:
- 使用微流体装置在水相中形成纤维素酸滴.
- 多种流速比率和连续相组合来控制滴滴动态.
- 在现场采用时差成像来观察滴滴的行为和粒子形成.
- 分析了无维的Péclet数 (Pe),以与粒子形状相关联.
主要成果:
- 增加流速比率和降低甲基酸盐度导致更快的滴滴收缩和更高的Pe.
- 由于粘性层的形成,高的Pe (>100) 会导致非球形粒子形状 (碗形,双) .
- 受z轴位置和粘性层形成影响的滴滴变形决定了最终的粒子形状.
- 建立了初始条件 (Pe,z轴位置) 和粒子结构之间的线性相关性.
结论:
- 这项研究提出了一种新的微流体方法,用于制造非球形CA微粒.
- 了解Péclet数和滴滴动态之间的相互作用对于形状控制至关重要.
- 开发的相关性为预测和制造所需粒子形态提供了指导方针.
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