Shamim Sarker Md, Huan Yonghe, Gan Linli, Zhang Shangyong
School of Textile Science and Engineering, Wuhan Textile University, No. 1 Sunshine Avenue, Jiangxia District, Wuhan 430200, China.
State Key Laboratory of New Textile Materials and Advanced Processing Technologies, No. 1 Sunshine Avenue, Jiangxia District, Wuhan 430200, China.
Polymers (Basel). 2024 Dec 12;16(24):3473. doi: 10.3390/polym16243473.
Industrial hemp, one of the most widely available and extensively produced varieties, generates a substantial amount of waste in the form of hemp cellulose. This study uses a recycling method combining crushing and acid treatment to convert leftover hemp fiber into ultrafine powder. A scanning electron microscope (SEM), an atomic force microscope (AFM), Fourier transform infra-red spectroscopy (FTIR), and X-ray diffraction (XRD) were used to examine the morphology of acid-treated hemp fiber heated to 200 °C and crushed into powder. The decrease in intensity, fiber surface crystalline, and grain size was analyzed. It became apparent that fiber strength decreased, and fiber roughness significantly increased after acid treatment. The degree of crystallinity of the broken fibers decreased significantly. The proposed method was a simple and effective method for converting leftover hemp fiber into ultrafine powder. In approximately 3 to 5 min, about 1 kg of dry ultrafine powder with a particle size of 38.68 μm was produced. This production method will significantly enhance future industrial applications of hemp residue.
工业大麻是最容易获得且产量广泛的品种之一，会产生大量大麻纤维素形式的废弃物。本研究采用一种将粉碎与酸处理相结合的回收方法，将剩余的麻纤维转化为超细粉末。使用扫描电子显微镜（SEM）、原子力显微镜（AFM）、傅里叶变换红外光谱（FTIR）和X射线衍射（XRD）来检测加热至200°C并粉碎成粉末的酸处理麻纤维的形态。分析了强度、纤维表面结晶度和晶粒尺寸的降低情况。结果表明，酸处理后纤维强度降低，纤维粗糙度显著增加。破碎纤维的结晶度显著降低。所提出的方法是一种将剩余麻纤维转化为超细粉末的简单有效方法。在大约3至5分钟内，可生产出约1千克粒径为38.68μm的干燥超细粉末。这种生产方法将显著提升未来大麻残渣在工业上的应用。
