In the present study, kenaf bast fibre surfaces have been modified using different chemicals with varying concentration. The effects of these chemical treatments on moisture content, water absorption, fibre diameter and bundle strength are investigated. The benefit of chemical treatments in the removal of impurities from the fibre surfaces has been established by scanning electron microscopy. It is found that the fibres treated with sodium hydroxide and acetic acid show major effect on fibre diameter. Compared to untreated kenaf fibre, strong alkali (NaOH) treatment show maximum water absorption (78.76%) and moisture content (8.15%). In fibre bundle tensile strength, sodium hydroxide and sodium carbonate treated fibres show more than 80% improvement in the tensile strength of fibre. Kenaf fibre treated with 10% Na2CO3 show highest tensile strength of 410 MPa.

中文翻译：

---

化学处理对红麻韧皮纤维物理性能的影响

在本研究中，使用不同浓度的不同化学品对洋麻韧皮纤维表面进行了改性。研究了这些化学处理对水分含量、吸水率、纤维直径和束强度的影响。扫描电子显微镜证实了化学处理在去除纤维表面杂质方面的优势。发现用氢氧化钠和乙酸处理的纤维对纤维直径有很大影响。与未经处理的洋麻纤维相比，强碱 (NaOH) 处理显示出最大的吸水率 (78.76%) 和水分含量 (8.15%)。在纤维束抗拉强度方面，经氢氧化钠和碳酸钠处理的纤维表现出超过 80% 的纤维抗拉强度提高。