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Natural materials are a focus for development of low carbon products for a variety of applications. To utilise these materials, processing is required to meet acceptable industry standards. Laminated bamboo is a commercial product that is currently being explored for structural applications, however there is a gap in knowledge about the effects of commercial processing on the chemical composition...
In this study, photocatalytic bleaching of cotton via ultraviolet (UV) and hydrogen peroxide (H2O2) has been investigated. 254 nm UV light was used for this purpose and the UV irradiation intensity was measured. A specially designed UV cabinet with UV lamps on both sides and top of the cabinet with total 18 UV lamps creating 470 Watts was used during the experiments. The whiteness degrees of the cotton...
The dihydroxyacetophenones 2,5-dihydroxyacetophenone (2,5-DHAP) and 2,6-dihydroxy-acetophenone (2,6-DHAP) belong to the key chromophores in cellulosic materials. The pulp and paper industry targets these key chromophores in their bleaching sequences to obtain brighter products. 2,5-DHAP and 2,6-DHAP were degraded with hydrogen peroxide in alkaline media, similar to conditions of peroxide bleaching...
Cellulose, being an abundantly available natural biopolymer, has a high potential to replace synthetic fibre. However, a paucity of knowledge and awareness on the use of cellulose, and agricultural waste base in particular, hampers efforts to harness this highly biodegradable resource to its full potential. This study aimed to extract and characterise cellulose obtained from pineapple (Ananas comosus...
Cotton fiber is the most widely produced and utilized natural fiber with a popular usage in our planet. A substantial amount of clean water is utilized during conventional cotton fiber pretreatment. In this study, we investigated the bleaching possibility of knitted cotton fabric by using supercritical carbon dioxide as a medium, as a cleaner waterless alternative, at pressures in the range of 180...
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