An investigation of treatments to improve the hand of fibre extracted from Typha latifolia plants

Loading...
Thumbnail Image
Date
2023-06-23
Authors
Jahan, Monika
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract

The study aimed to improve the hand of Typha latifolia (cattail) fibres by modifying the surface aerenchyma, calcium oxalate plates (COPs), and thick lignified secondary cell wall, features considered responsible for fibre stiffness. First stage experiments to clean the fibre surface compared microwave (ME) with convection extraction (CE). In the second stage, complete removal of COPs was attempted to smooth the fibre surface of ME and CE. The third stage aimed to remove maximum lignin by bleaching and then applying enzyme, softener, and two humectants to bleached and virgin fibres (CE). In all stages, fibre yield, moisture regain, fibre diameter, and tensile strength, Young’s modulus were measured; in the second stage, surface smoothness (fibre hand), and fibre density were measured; and in final stage fibre flexibility (fibre hand) and cohesion. Statistics, micrographs, and fibre composition were analyzed, respectively, with ANOVA and t-test, Environmental Scanning Electron Microscope (ESEM), and Energy Dispersive Spectroscopy (EDS). Results showed the ME fibre production process 20-26 times faster, stronger fibres with less surface aerenchyma and COPs than CE fibres. After COPs were removed with ultrasonic cleaner, the ME and CE fibres became lighter, less dense, and bit smoother in surface than the virgin fibre. In the third stage, bright bleached fibres were obtained (CIE Lab: 95.2, 2.5, 9.4); fibre cohesion was increased but fibre weight, thickness, and strength were reduced. Finally, the application of humectant (glycerol) on virgin and bleached fibres improved fibre hand, significantly increased moisture regain; however, mechanical properties decreased significantly.

Description
Keywords
ESEM, Calcium oxalate plate, Bleaching, spinning, Softness, Twisting, surface friction, Flexibility, Young's modulus, Tensile strength, mechanical properties, Ultrasonic, microwave, Electromagnetic radiation, convection, Bleach, Lignin, Aerenchyma, Nodes
Citation