Abstract
Transparent jute fiber (TJF) was prepared from delignified jute fiber (DJF) and was subjected to various surface knitting densities (190 and 340 g/m2) before epoxy resin (ER) impregnation under vacuum. The preparation process and properties of TJF were evaluated. The mechanical properties and surface morphology of the jute fiber samples were also studied. The mechanical properties were compared with transparent coir fiber (TCF) and transparent balsa wood (TBW). Optical properties, such as surface color, optical transmittance, and visual haze, of natural jute fiber (JF) and TJF were measured to better understand the influence of delignification. The experimental results showed transparency of 51% even for dense jute fiber cloth, and the maximum transmittance was as high as 60% with a low surface density. TJF had similar tensile strength as TBW but was higher than TCF, indicating a maximum tensile strength of 43.25 MPa with a surface density of 340 g/m2. These results suggest that TJF has the potential to meet the particular optical and mechanical properties of transparent wood. Transparent jute fiber can replace transparent wood for industrial production because of the simple preparation process and lower price.
Highlights
A new biomass material called transparent wood has attracted widespread attention [1,2].Transparent wood is a polymer material with a matched refractive index as delignified wood or modified wood with lignin, giving it optical properties and improving its mechanical properties [3].The characteristic of transparent wood is that high transmittance and high haze exist side by side; it is considered an excellent substitute for glass [4]
Use of the hydrogen peroxide solution treatment for the hydrogen peroxide solution treatment for TJF190 resulted in no obvious effect on brightness, color, TJF190 resulted in no obvious effect on brightness, color, or the other color parameters
9a,b shows that the tensile tensile strength and dense or sparse jute fibers without delignification were slightly higher than the transparent jute fibers
Summary
A new biomass material called transparent wood has attracted widespread attention [1,2]. The sample was rinsed with distilled water, vacuum-dried at 45 ◦ C for 24 h, and combined with nano-Fe3 O4 particles to prepare transparent wood with good conductivity and magnetism [12] Those researchers did not consider the delignification process in detail, which resulted in a long processing time, a waste of pharmaceutical and experimental resources, and increased complexity of the experiment. Phloem fibers mainly include hemp, jute, flax, ramie, and abutilon, whereas leaf fibers mainly include sisal and banana [15] In these fibers, the flax cell walls are not lignified, so the length and thickness of the fibers are similar to cotton, which can be used as textile raw materials. If a single micron diameter jute fiber is used to replace wood by braiding, it can solve the problem of difficult-to-remove lignin and ease of splitting in the transverse direction during preparation of transparent wood
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