Faculty of Chemistry, Institute of Polymer and Dye Technology, Lodz University of Technology, Stefanowskiego 16, 90-537 Lodz, Poland.
Faculty of Biotechnology and Food Sciences, Institute of Fermentation Technology and Microbiology, Lodz University of Technology, Wolczanska 171/173, 90-530 Lodz, Poland.
Int J Mol Sci. 2021 Nov 20;22(22):12524. doi: 10.3390/ijms222212524.
This study aimed to present the influence of bio-based and anthraquinone dyes and their combinations on the optical properties of ethylene-propylene (EPM) composites after thermo-oxidative and climatic aging. Therefore, the chosen polymer was filled with a natural, plant-origin flavonoid-quercetin, and with two commercial anthraquinone dyes (C.I. Solvent Yellow 163 and C.I. Solvent Red 207). The manufactured polymer composites were subjected to accelerated aging tests: weathering and thermo-oxidation, respectively. Examination of the materials' properties indicated that the combination of synthetic and natural dyes can result in better resistance to oxidizing agents and higher thermal stability of ethylene-propylene products. Moreover, color change of quercetin-containing samples due to exposure to simulated atmospheric conditions could be a promising solution for use as aging indicators in intelligent packaging materials that will inform about the ongoing degradation process. Another interesting finding is that these samples exhibited good fungistatic activity against yeast and mold. Overall, this novel solution based on hybrid polymer composites containing natural and commercial dyes is a more environmentally friendly alternative to traditional materials used in the plastic packaging industry with better and more desirable properties.
本研究旨在展示生物基和蒽醌染料及其组合对经过热氧化和气候老化后的乙烯-丙烯（EPM）复合材料光学性能的影响。因此，选择的聚合物填充了天然的、植物来源的类黄酮——槲皮素，以及两种商业蒽醌染料（C.I. 溶剂黄 163 和 C.I. 溶剂红 207）。制造的聚合物复合材料分别进行了加速老化测试：风化和热氧化。对材料性能的检查表明，合成染料和天然染料的组合可以提高对氧化剂的抵抗力和提高乙烯-丙烯产品的热稳定性。此外，由于暴露于模拟大气条件而导致含有槲皮素的样品的颜色变化可能是一种有前途的解决方案，可作为智能包装材料中的老化指标，这些材料将告知正在进行的降解过程。另一个有趣的发现是，这些样品对酵母和霉菌表现出良好的抑菌活性。总的来说，这种基于含有天然和商业染料的混合聚合物复合材料的新型解决方案是一种更环保的替代传统塑料包装行业材料的方法，具有更好和更理想的性能。
