Abstract

Agave fibers were extracted mechanically without the use of solvents or water, through a lyophilization-assisted method. Then, the internal arrangement of the fibrils was studied in order to elaborate a hierarchical growing model, using this information to explain the outstanding properties of these natural fibers. We found that the lyophilized fibers have an initial modulus of 36.7 g/den, a breaking tenacity of 1.45 g/den and an elongation of 17 %, while the fibers washed with water after extraction presented a similar value of initial modulus (31.1 g/den), but the breaking tenacity (2.59 g/den), and the elongation (34 %) increased nearly two times, showing the embrittling effect of the freeze-drying on the fibers behavior.

中文翻译：

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龙舌兰叶片为原料的冷冻干燥辅助提取具有层次结构的原纤维

摘要

通过冻干辅助方法在不使用溶剂或水的情况下机械提取龙舌兰纤维。然后，研究了原纤维的内部排列，以阐明分层的生长模型，并使用此信息来解释这些天然纤维的出色性能。我们发现冻干纤维的初始模量为36.7 g / den，断裂韧度为1.45 g / den，伸长率为17％，而提取后用水洗涤的纤维的初始模量值相近（31.1 g / den但是，断裂韧度（2.59g / den）和伸长率（34％）增加了近两倍，显示了冷冻干燥对纤维性能的脆化作用。