Comparative Analysis of Peat Fibre Properties and Peat Fibre-Based Knits Flammability

Abstract

A very promising cellulose-based natural fibre that is suitable for use in the textile industry is peat fibre. This fibre is a by-product of peat excavation, purified by separating it from other components. In this study, the morphological, chemical and mechanical properties of peat fibres as well as flammability of peat-based knitted fabrics were analysed. The average diameter of the peat fibres is ~60 μm, but it varies in very wide ranges – 25–150 μm; however, the number of fibres with diameter more than 100 μm is very low. As the peat fibre contains a high amount of lignin, lignin amount in the mixed peat/cotton yarn is relatively high too. Lignin is responsible for enhanced flame retardancy; therefore, time to ignition of the peat knit is ~30% higher than that of the cotton knit. Consequently, peat fibre can be used in the knitted structure in order to significantly reduce its flammability. In order to increase the flame retardancy, the knits have been treated by flame retardant in various concentrations. It was found that around the burned hole on the peat knit, treated by very low concentration flame retardant, forms charred area and the knit stops to burn even if the flame source is not removed.

On the use of reference mass spectra for reducing uncertainty in source apportionment of solid-fuel burning in ambient organic aerosol

“…However, the results from our study suggest that variations in f 60 and f 44 could also be due to different burning condi-tions (i.e., in different stoves) and do not necessarily correspond to primary OA ageing or atmospheric processing. For peat-burning OA, there is a lower f 60 (0.016-0.017) than that for wood (0.029-0.053) due to the lower content of cellulose (Brown et al, 1988;Mikucioniene et al, 2019). Compared to wood, the peat MS appeared to be less affected by the stove type with a difference ratio of −0.06 (or 6 %) for m/z 60 (Fig.…”

Antibacterial Bio-Nanocomposite Textile Material Produced from Natural Resources

“…In the following text, the obtained knitted fabric is denoted as CP. The chemical composition of the CP yarn, analyzed according to the Klason method [ 5 ] at the Latvian State Institute of Wood Chemistry, was 92.32% cellulose, 2.61% hemicellulose, 2.96% lignin, and 2.11% other compounds. The main characteristics of the knitted fabric were as follows: wale density, 4.2 cm −1 ; course density, 5.8 cm −1 ; loop length, 11.2 mm; wale spacing, 2.38 mm; course spacing, 1.72 mm; area density, 654.80 g/cm 2 ; and tightness factor, 1.38 tex 1/2 /cm.…”

“…Peat is generated in flooded environments through the decomposition of various plant materials under acidic and anaerobic conditions [ 3 , 4 ]. It is commonly used for energy production, building, agriculture, infrastructure development, and medicine [ 5 ]. Peat fibers are produced from decomposed cotton grass stems extracted from the top layer of peat bogs, which is scrapped as waste.…”

“…Thus, peat fibers are sustainable, as they are by-products of the peat excavation process and do not require additional agricultural land, water, or pesticides. Mikučioniene et al reported that knits made of peat fibers mixed with cotton or wool fibers showed good features (e.g., abrasion resistance, heat transfer, and strength), and their utilization in the textile industry was recommended [ 3 , 5 ].…”