Zhao Lihuan, Yang Yujie, Wang Yuwen, Yan Ziyan, Zhang Rong
School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China.
Key Laboratory of Advanced Textile Composites, Ministry of Education, Tiangong University, Tianjin 300387, China.
Polymers (Basel). 2024 Aug 10;16(16):2275. doi: 10.3390/polym16162275.
The coffee industry is developing rapidly in the world, and the use of coffee filtration nonwovens (CFNs) is becoming more and more extensive; however, there is a lack of standards and research for its production and trade, and the quality of related products on the market is uneven at present. Here, eight double-layer composite coffee filtration nonwovens (D-LCCFNs) were prepared by using 5 g/m and 10 g/m polypropylene (PP) melt-blown nonwovens (MNs), 20 g/m PP spunbonded nonwovens and 20 g/m viscose/ES fiber chemically bonded nonwovens, and the physical properties, morphology and the filtration effect of coffee and purified water for the prepared samples were tested. It was found that the surface density of the microfiber layer (MNs) in the D-LCCFNs was negatively correlated with the coffee filtration rate; when the microfiber layer in the D-LCCFNs was in direct contact with the coffee, the liquid started to drip later, and the filtration rate of the coffee was slower; the filtration rate of the samples with the viscose/ES chemically bonded nonwovens was very fast. However, the samples without viscose/ES fibers basically did not filter pure water much, but they could filter out the coffee liquid normally, and the samples' hydrophilicity increased significantly after filtering coffee.
咖啡产业在全球发展迅速，咖啡过滤无纺布（CFNs）的使用越来越广泛；然而，其生产和贸易缺乏标准和研究，目前市场上相关产品质量参差不齐。在此，使用5 g/m和10 g/m的聚丙烯（PP）熔喷无纺布（MNs）、20 g/m的PP纺粘无纺布和20 g/m的粘胶/ES纤维化学粘合无纺布制备了八种双层复合咖啡过滤无纺布（D-LCCFNs），并对制备样品的物理性能、形态以及对咖啡和纯净水的过滤效果进行了测试。研究发现，D-LCCFNs中微纤维层（MNs）的面密度与咖啡过滤速率呈负相关；当D-LCCFNs中的微纤维层与咖啡直接接触时，液体开始滴下的时间较晚，且咖啡的过滤速率较慢；含有粘胶/ES化学粘合无纺布的样品过滤速率非常快。然而，不含粘胶/ES纤维的样品基本上对纯净水过滤很少，但它们能够正常过滤出咖啡液，并且在过滤咖啡后样品的亲水性显著增加。
