College of Textile Engineering, Taiyuan University of Technology, Jinzhong, Shanxi 030600, China.
College of Textile Engineering, Taiyuan University of Technology, Jinzhong, Shanxi 030600, China.
Waste Manag. 2018 Dec;82:139-146. doi: 10.1016/j.wasman.2018.10.023. Epub 2018 Oct 20.
A large amount of accumulated waste cotton fabrics (WCFs) have caused environmental problem and depletion of resources. The extraction of microcrystalline cellulose as value-added products is one of the effective ways to the recycling of WCFs. This study aimed to extract microcrystalline cellulose from WCFs by the hydrothermal method and compare the extracted microcrystalline cellulose (EMC) with Avicel PH101 microcrystalline cellulose (MCC). The EMC was extracted under hydrothermal conditions (solid-liquid ratio 1:30, HCl concentration 0.6 mol/L, 150 °C, 100 min), with a yield and the degree of polymerization of 85.54% and 228, respectively. The samples were characterized by scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, nuclear magnetic resonance, thermogravimetric analysis and contact angle testing. The detailed analyses showed that the properties of EMC prepared from WCFs are similar to those of commercial MCC. The results indicated that WCFs is a critical and potential low-cost raw material to prepare MCC.
大量积累的废棉织物 (WCFs) 造成了环境问题和资源枯竭。将微晶纤维素作为增值产品提取是 WCFs 回收的有效方法之一。本研究旨在通过水热法从 WCFs 中提取微晶纤维素，并将提取的微晶纤维素 (EMC) 与 Avicel PH101 微晶纤维素 (MCC) 进行比较。EMC 在水热条件下 (固液比 1:30，HCl 浓度 0.6 mol/L，150°C，100 min) 提取，产率和聚合度分别为 85.54%和 228。通过扫描电子显微镜、X 射线衍射、傅里叶变换红外光谱、核磁共振、热重分析和接触角测试对样品进行了表征。详细分析表明，WCFs 制备的 EMC 的性能与商业 MCC 相似。结果表明，WCFs 是制备 MCC 的一种关键的、具有潜力的低成本原料。
