Continuous-flow preparation of nanoporous metal/polymer composite particles by in situ synthesis of silver nanoparticles in photopolymerized acrylate/diethylene glycol droplets
Continuous-flow preparation of nanoporous metal/polymer composite particles by in situ synthesis of silver nanoparticles in photopolymerized acrylate/diethylene glycol droplets
复制标题
通过在光聚合丙烯酸酯/二甘醇液滴中原位合成银纳米颗粒连续流动制备纳米多孔金属/聚合物复合颗粒
DOI：
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发表时间：
2013
影响因子：
4.5
通讯作者：
C. Serra
中科院分区：
文献类型：
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作者：
J. Michael Köhler;I. Kraus;J. Faerber;C. Serra
将聚合物微粒的微连续流合成原理应用于纳米多孔丙烯酸酯颗粒的合成以及含有银和金/银金属纳米颗粒的聚合物复合微粒的合成。通过添加二甘醇（DEG）诱导纳米孔隙。根据所用玻璃毛细管的直径和液滴形成过程中的流动条件，已经获得了尺寸在约50和500 μm之间的纳米多孔和复合聚合物颗粒。DEG充当溶解性的介体，并允许加入银盐和四氯金酸以及抗坏血酸，以增强反应混合物中金属离子的还原。金属纳米颗粒的形成主要发生在紫外光诱导聚合过程中。通过SEM成像和EDX分析证明了聚合物基体内金属纳米颗粒的存在。
The principle of micro continuous-flow synthesis of polymer microparticles using a co-flow arrangement with integrated in situ photopolymerization was applied for the synthesis of nanoporous acrylate particles and for polymer composite microparticles containing silver and gold/silver metal nanoparticles. The nano porosity is induced by the addition of diethylene glycol (DEG). Nanoporous and composite polymer particles with sizes between about 50 and 500 μm have been obtained depending on the diameter of the applied glass capillary and the flow conditions during droplet formation. DEG acts as a mediator for miscibility and allows the addition of silver salt and tetrachloroauric acid as well as ascorbic acid for enhancing the reduction of metal ions in the reaction mixture. The formation of metal nanoparticles takes place mainly during the UV-light-induced polymerization. The presence of metal nanoparticles inside the polymer matrix was proved by SEM imaging and EDX analysis.