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首页> 外文期刊>Journal of Applied Polymer Science >Novel Process for Isolating Fibrils from Cellulose Fibers by High-Intensity Ultrasonication. II. Fibril Characterization
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Novel Process for Isolating Fibrils from Cellulose Fibers by High-Intensity Ultrasonication. II. Fibril Characterization

机译：通过高强度超声从纤维素纤维中分离纤维的新方法。二。原纤维表征

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摘要

High-intensity ultrasonication with a batch process was used to isolate fibrils from several cellulose sources, and a mixture of microscale and nanoscale fibrils was obtained. The geometrical characteristics of the fibrils were investigated with polarized light microscopy, scanning electron microscopy, and atomic force microscopy. The results show that small fibrils with diameters ranging from about 30 nm to several micrometers were peeled from the fibers. Some fibrils were isolated from the fibers, whereas some were still on the fiber surfaces. The lengths of untreated and treated cellulose fibers were investigated by a fiber size analyzer. The crystallinities of some cellulose fibers were evaluated by wide-angle X-ray diffraction and Fourier transform infrared spectroscopy. The high-intensity ultrasonication technique is an environmentally benign method and a simplified process that conducts fiber isolation and chemical modification simultaneously and helps significantly reduce the production cost of cellulose nanofibers; and their composites.
机译：使用分批工艺的高强度超声从数种纤维素来源中分离出原纤维，并获得了微米级和纳米级原纤维的混合物。用偏振光显微镜，扫描电子显微镜和原子力显微镜研究原纤维的几何特征。结果表明，从纤维上剥离了直径范围为约30nm至几微米的小原纤维。从纤维中分离出一些原纤维，而一些仍保留在纤维表面上。用纤维尺寸分析仪研究未处理和处理过的纤维素纤维的长度。通过广角X射线衍射和傅里叶变换红外光谱法评价一些纤维素纤维的结晶度。高强度超声技术是一种环境友好的方法，是一种简化的过程，可同时进行纤维分离和化学改性，并有助于显着降低纤维素纳米纤维的生产成本。及其复合材料。

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