Doctoral School of Engineering and Technical Sciences, Rzeszow University of Technology, Al. Powstańców Warszawy 8, 35-959 Rzeszow, Poland.
Department of Physical Chemistry, Faculty of Chemistry, Rzeszow University of Technology, Al. Powstańców Warszawy 6, 35-959 Rzeszow, Poland.
Molecules. 2022 Jan 27;27(3):840. doi: 10.3390/molecules27030840.
Coffee, the most popular beverage in the 21st century society, was tested as a reaction environment for activators regenerated by electron transfer atom transfer radical polymerization (ARGET ATRP) without an additional reducing agent. Two blends were selected: pure Arabica beans and a proportional blend of Arabica and Robusta beans. The use of the solution received from the mixture with Robusta obtained a high molecular weight polymer product in a short time while maintaining a controlled structure of the synthesized product. Various monomers with hydrophilic characteristics, i.e., 2-(dimethylamino)ethyl methacrylate (DMAEMA), oligo(ethylene glycol) methyl ether methacrylate (OEGMA), and glycidyl methacrylate (GMA), were polymerized. The proposed concept was carried out at different concentrations of coffee grounds, followed by the determination of the molar concentration of caffeine in applied beverages using DPV and HPLC techniques.
咖啡是 21 世纪社会最受欢迎的饮料，被测试为电子转移原子转移自由基聚合（ARGET ATRP）再生引发剂的反应环境，无需添加额外的还原剂。选择了两种混合物：纯阿拉比卡咖啡豆和阿拉比卡和罗布斯塔咖啡豆的比例混合。使用从与罗布斯塔混合获得的溶液在短时间内获得了高分子量聚合物产物，同时保持了合成产物的受控结构。聚合了各种具有亲水性特征的单体，即 2-（二甲氨基）乙基甲基丙烯酸酯（DMAEMA）、聚（乙二醇）甲基醚甲基丙烯酸酯（OEGMA）和甲基丙烯酸缩水甘油酯（GMA）。该概念是在不同浓度的咖啡渣下进行的，然后使用 DPV 和 HPLC 技术测定应用饮料中咖啡因的摩尔浓度。
