Natural fibers are an ideal choice for fabricating advanced functional materials. In this study, novel ultrastrong and tough natural cellulosic fiber bundles (RFs) extracted from vascular tissues of manau rattan stems were obtained. The physical, mechanical, chemical, thermal, crystallographic, and morphological characteristics of RFs with different diameters were analyzed. The chemical composition analysis showed that more cellulose and less lignin existed in thinner RFs. Scanning electron microscopic images revealed that manau rattan was mainly composed of vascular bundles, consisting of xylem, parenchyma, and run-through thicker tracheids. X-ray diffraction analysis indicated the RF_S had higher crystallinity (51.7 %) than RF_M (49.7 %) and RF_L (47.7 %). The rattan fiber bundles showed simultaneously enhanced tensile strength (170.2 for RF_S vs. 65.6 MPa for RF_L) and toughness (31.6 for RF_S vs. 16.7 MJ/m³ for RF_L) as diameter decreased. Tensile strength and toughness were 482.6 MPa and 79.9 MJ/m³ when RF diameter decreased to 0.15 mm. These findings suggested that these RFs will play a promising role in the field of nano-advanced functional materials.

天然纤维是制造先进功能材料的理想选择。在这项研究中，获得了从玛瑙藤茎的维管组织中提取的新型超强韧天然纤维素纤维束（RFs）。分析了不同直径射频的物理、机械、化学、热、晶体和形态特征。化学成分分析表明，在较薄的 RFs 中存在较多的纤维素和较少的木质素。扫描电子显微图像显示，马瑙藤主要由维管束组成，包括木质部、薄壁组织和贯穿的较粗的管胞。X 射线衍射分析表明 RF _{S 的}结晶度 (51.7%) 高于 RF _M (49.7%) 和 RF _L(47.7%)。藤纤维束显示出同时增强拉伸强度（170.2用于RF_小号 与65.6兆帕用于RF_大号）和韧性（31.6对RF_小号 与16.7 MJ /米³为RF_大号）作为直径减小。当 RF 直径减小到 0.15 mm 时，拉伸强度和韧性分别为 482.6 MPa 和 79.9 MJ/m ³。这些发现表明这些RFs将在纳米先进功能材料领域发挥有前途的作用。