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首页> 外文期刊>Advanced Powder Technology: The internation Journal of the Society of Powder Technology, Japan >Progress in developing spray-drying methods for the production of controlled morphology particles: From the nanometer to submicrometer size ranges
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Progress in developing spray-drying methods for the production of controlled morphology particles: From the nanometer to submicrometer size ranges

机译：开发喷雾干燥方法以生产可控形态颗粒的进展：从纳米到亚微米尺寸范围

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摘要

Control of particle size and morphology has increasingly captured the attention of researchers for decades. The exploration of unique sizes and shapes as they relate to various properties has become a great quest for large field applications. To meet these demands, this review covers recent developments in particle processing. An aerosol-assisted self-assembly technique, with a spray-drying method as a representative of it, to create particles is thoroughly reviewed. Its popularity and its broad use in industry for producing particles are the main reason of this review; thus, elucidation of this method is important for the improvement of particle technology. A practical spray-drying method is described from the step-by-step process to the selection of apparatus types (merits and demerits). Elaboration of particle processing of several morphologies (sphere, doughnut, encapsulated, porous, hollow, and hairy) is discussed in terms of the selection of material types, the addition of supporting materials, and the change of process conditions. Controllable size is also discussed in terms of the adjustment of the droplet size, initial precursor concentration, and the addition of specific techniques. A comparison between a theoretical mechanism and current experimental results (over a 15-year period) are shown to clarify how particles with various sizes and morphologies are designed. This method must be considered an art rather than a science because of its advantages in creating wonderful and unique particle shapes. The performance of various particle morphologies is also demonstrated, which is essential for an understanding of the importance that shape can exert on practical use. Because the method outlined here can be broadly applied to the production of various types of functional materials, we believe that this report contributes new information to the field of chemical, material, environmental, and medical engineering.
机译：几十年来，控制粒径和形态已越来越引起研究人员的注意。探究与各种特性相关的独特尺寸和形状，已成为对大型现场应用的巨大追求。为了满足这些需求，本综述涵盖了粒子处理的最新进展。彻底审查了以喷雾干燥法为代表的气雾辅助自组装技术，以产生颗粒。它的受欢迎程度及其在工业生产颗粒中的广泛应用是本综述的主要原因;因此，阐明这种方法对于改进粒子技术很重要。从分步过程到设备类型（优缺点）的选择，介绍了一种实用的喷雾干燥方法。通过选择材料类型，添加支持材料和更改工艺条件，讨论了对几种形态（球形，甜甜圈状，封装，多孔，中空和毛状）的颗粒加工的阐述。还根据液滴大小的调整，初始前体浓度和添加特定技术来讨论可控制的大小。比较了理论机理和当前的实验结果（历时15年），以阐明如何设计各种尺寸和形态的颗粒。由于该方法在创建奇妙而独特的粒子形状方面具有优势，因此必须将其视为一门艺术而不是一门科学。还演示了各种粒子形态的性能，这对于理解形状在实际应用中的重要性至关重要。由于此处概述的方法可以广泛地应用于各种类型的功能材料的生产，因此我们相信本报告为化学，材料，环境和医学工程领域提供了新的信息。

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