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Extraction of cellulose from SCB and its applications in CNC/metal nanocomposites

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dc.contributor.advisor Revaprasadu, N.
dc.contributor.advisor Motaung, T.E.
dc.contributor.author Mzimela, Zimele N.T.
dc.date.accessioned 2019-07-16T07:25:15Z
dc.date.available 2019-07-16T07:25:15Z
dc.date.issued 2018
dc.identifier.uri http://hdl.handle.net/10530/1749
dc.description A thesis submitted in fulfilment of the requirements for the Degree Master of Science in Chemistry in the Department of Chemistry, Faculty of Science and Agriculture at the University of Zululand, 2018. en_US
dc.description.abstract The past few years have seen an increased interest in enforcing the principles of green chemistry in the scientific community. The aim of these principles is to reduce chemical related impacts on human health and virtually eliminate contamination of the environment through dedicated and sustainable prevention programs. In the present study, of the many (12) green chemistry principles, we have put into implementation waste prevention, the use of safer solvents and/ or auxiliaries in syntheses, and the use of less hazardous chemicals in syntheses by undertaking a project that makes use of sugarcane bagasse, which is an agricultural waste material obtained when sugarcane is crushed to extract its juices during the production of sugar. From bagasse, cellulose was extracted through five different methods. Through acid hydrolysis, cellulose nanocrystals were synthesised from the extracted cellulose and in turn used as a template, reducing- and stabilizing agent in the synthesis of cellulose nanocrystal/metal (silver and gold) nanocomposites. The fifth cellulose-extraction method yielded the most thermally stable and pure cellulose. This was shown by TGA and XRD analyses. As a result, the cellulose extracted through the fifth method was used to synthesize cellulose nanocrystals, which were then successfully used as a stabilizing and reducing agent in the formation of CNC/metal nanocomposites, as evident from FTIR, TGA, XRD, UV and TEM analyses. en_US
dc.description.sponsorship National Research Foundation; Department of Science and Technology en_US
dc.language.iso en en_US
dc.publisher University of Zululand en_US
dc.subject Nanocomposites en_US
dc.subject Green chemistry principles en_US
dc.subject Hazardous chemicals en_US
dc.title Extraction of cellulose from SCB and its applications in CNC/metal nanocomposites en_US
dc.type Thesis en_US

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