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首页> 外文期刊>RSC Advances >Generation of controlled monodisperse porous polymer particles by dipped inkjet injection
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Generation of controlled monodisperse porous polymer particles by dipped inkjet injection

机译：浸渍喷墨法生成受控的单分散多孔聚合物颗粒

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摘要

A straightforward approach for the preparation of monodisperse porous polymer particles by inkjet technology is reported. Uniform droplets of an aqueous polymer solution were ejected from an inkjet, the nozzle of which was immersed in an organic phase. The subsequent dehydration of the droplets by solvent extraction resulted in the formation of porous polymer microspheres. Particles with a narrow size distribution could be obtained using the present system in a single step. Parameters for polymer droplet generation in an organic phase, including polymer properties, organic solvent, and inkjet waveform, were investigated. The relationship between the final particle diameter and the initial polymer droplet size were also examined. The diameters of the particles could be precisely controlled by changing the waveform exerted on the inkjet, thus producing particles with diameters in the range of 15 mu m-60 mu m with a coefficient of variation (CV) in the range of 2.7-4.8%. It was also possible to produce hollow porous polymer particles by simply decreasing the concentration of the polymer solution. The results demonstrate the merit of the inkjet-based method for the generation of monodisperse porous polymer particles. The method has the potential for producing functional polymer particles via the incorporation of functional or smart materials.
机译：报道了通过喷墨技术制备单分散多孔聚合物颗粒的直接方法。从喷墨器中喷射出聚合物水溶液的均匀液滴，该喷墨器的喷嘴浸入有机相中。随后通过溶剂萃取使液滴脱水导致形成多孔聚合物微球。使用本系统可以在单个步骤中获得具有窄尺寸分布的颗粒。研究了在有机相中产生聚合物液滴的参数，包括聚合物性能，有机溶剂和喷墨波形。还检查了最终粒径与初始聚合物液滴尺寸之间的关系。可以通过改变施加在喷墨机上的波形来精确控制颗粒的直径，从而生产出直径在15μm-60μm范围内的颗粒，其变异系数（CV）在2.7-4.8％的范围内。也可以通过简单地降低聚合物溶液的浓度来制备中空的多孔聚合物颗粒。结果证明了基于喷墨法产生单分散多孔聚合物颗粒的优点。该方法具有通过掺入功能或智能材料来生产功能聚合物颗粒的潜力。

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