期刊
CARBOHYDRATE POLYMERS
卷 296, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2022.119937
关键词
Cellulosic fibre; Nettle; Alkali treatment; Surface modification
资金
- Indian Institute of Technology, Roorkee
- University of Petroleum and Energy Studies, Dehradun
The study found that alkaline treatment at a concentration of 5% is the optimal method for surface treatment of Himalayan nettle fibres. This treatment effectively removes impurities and improves the fibre properties, making them suitable for polymer composites.
The Himalayan nettle plant can yield strong and long bast fibre. In this study, the extracted fibres were treated with 3, 5, 7, and 10 wt% alkali solution and characterised the raw and treated fibres for chemical, morphological, physical, mechanical, and thermal properties. The objective is to find the optimized alkali concentration for fibre surface treatment to use as reinforcement in polymer composites. Results revealed that alkali treatment removed waxes, lignin, and hemicellulose from the surface and enhanced the fibre properties to make it compatible with the polymer matrix. However, alkali concentration affected the fibre properties significantly. 5 % alkali treatment resulted in a maximum crystallinity index (79.1 %), average roughness (26.8 nm), tensile strength (296.97 MPa), activation energy (181.33/180.97 kJ/mol) and initial temperature for stage II degradation (311.2 degrees C). This investigation concludes that 5 % is the optimized alkali concentration for surface treatment of the nettle fibre.
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