Environmentally Friendly Synthesis of Polymer Nanoparticles in a Packed Reactor Using Glass Beads

IF 1.8 4区工程技术 Q3 ENGINEERING, CHEMICAL

Macromolecular Reaction Engineering Pub Date : 2024-05-09 DOI:10.1002/mren.202400009

Tetsuya Yamamoto, Ayumi Morino, Hideki Kanda, Ayumu Seki, Toru Ishigami

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Abstract

Polymeric particles less than 100 nm in size (polymer nanoparticles), which are useful in the fields of medicine and so on, are synthesized through emulsion polymerization, wherein surfactants are essential for maintaining their dispersion stability, contaminating particle surfaces and causing high environmental pollution. The soap‐free emulsion polymerization (SFEP) of styrene in a packed reactor using microglass beads enables the synthesis of polymer nanoparticles without surfactants. Ultraviolet irradiation is used for radical polymerization using an initiator during the SFEP of styrene. The reaction space in the packed reactor is controlled by the size of glass beads to be filled in the reactor. A decrease in the size of the glass beads narrows the reaction space, causing the average polystyrene particle size to reach 27.3 nm and suppress convection flow by the wall of the glass beads, thereby limiting particle motion and preventing particle growth through particle collisions.This article is protected by copyright. All rights reserved

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使用玻璃珠在填料反应器中以环保方式合成聚合物纳米颗粒

小于 100 纳米的聚合物微粒（聚合物纳米微粒）在医药等领域非常有用，这些微粒是通过乳液聚合法合成的，其中表面活性剂对保持微粒的分散稳定性至关重要，而且会污染微粒表面，造成严重的环境污染。使用微玻璃珠在填料反应器中对苯乙烯进行无皂乳液聚合（SFEP），可以在不使用表面活性剂的情况下合成聚合物纳米粒子。在苯乙烯的 SFEP 过程中，使用引发剂将紫外线照射到自由基聚合中。填料反应器中的反应空间由反应器中填充的玻璃微珠的尺寸控制。玻璃珠尺寸的减小会缩小反应空间，使聚苯乙烯的平均粒径达到 27.3 nm，并抑制玻璃珠壁的对流，从而限制颗粒的运动，防止颗粒因碰撞而增长。本文受版权保护。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Macromolecular Reaction Engineering 工程技术-高分子科学

CiteScore

2.60

自引率

20.00%

发文量

审稿时长

3 months

期刊介绍： Macromolecular Reaction Engineering is the established high-quality journal dedicated exclusively to academic and industrial research in the field of polymer reaction engineering.