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Browsing Conference Publications by Cluster "Chemicals"

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Active nanocomposite films based on low density polyethylene/organically modified layered bouble hydroxides/thyme oil to retain retail shelf life and quality of hass avocados

Author: Kesavan Pillai, Sreejarani ; Sivakumar, D ; Ray, Suprakas S ; Obianom, P ; Eggers, Sharon K ; Mhlabeni, T Date: Dec 2020 In this study, the ability of an active film containing volatile bioactives in post-harvest disease control and preservation of quality in avocados is explored as a non-traditional treatment method. Antimicrobial transparent flexible trilayer ... Read more
Analytical techniques to quantify modifiers in bitumen for the South African asphalt pavement industry

Author: Makhari, A ; Hawes, Nomashaka BN ; Mturi, George AJ ; Ojijo, Vincent O Date: Jul 2021 Modifying bitumen is currently a common practice in South Africa. The asphalt pavement industry has seen an increase in use of different types of modifiers in an attempt to improve or extend the properties of bitumen. Common modifiers used ... Read more
Biowaste biorefineries in South Africa: Current status, opportunities, and research and development needs

Author: Sekoa, Patrick T ; Chunilall, Viren ; Msele, K ; Buthelezi, L ; Johakimu, Jonas ; Andrew, Jerome E ; Zungu, M ; Moloantoa, K ; Maningi, N ; Habimana, O ; Swartbooi, Ashton M Date: Dec 2023 As one of the highest carbon-emitting nations, South Africa is working tirelessly to swiftly transition to sustainable technologies in order to strengthen its green economy initiatives. Amongst the technologies that are explored in the ... Read more
Cellulose nanocrystals and snail shell-reinforced polyvinyl alcohol bioplastic films: Additive concentration optimization and mechanical properties assessment

Author: Gbadeyan, Oluwatoyin J ; Fagbemi, Olajumoke D ; Jerome, Andrew E ; Adali, S ; Glen, B ; Sithole, Bishop B Date: Jul 2022 This study focused on modeling and optimization of the concentration of poly (vinyl alcohol) (PVA), cellulose nanocrystals (CNC), snail shell nanoparticles (SSN), and glycerol for the development of bioplastic films. The response surface ... Read more
Chemical modification of sugarcane bagasse with chitosan for the removal of phosphates in aqueous solution

Author: Manyatshe, Alusani ; Balogun, Mohammed O ; Nkambule, TTI ; Cele, Zamani ED ; Msagati, TAM Date: Nov 2020 Sugarcane bagasse is the major solid waste product of the sugarcane industry. As a plant-derived biomass, it is an attractive environmentally friendly alternative to petroleum-based materials. Being a non-food agriculture product, its use as ... Read more
Gas chromatographic profiling of the biocatalytic conversion of sclareol to ambradiol by Hyphozyma roseoniger

Author: Ncube, EN ; Mathiba, Kgama ; Steenkamp, Lucia H ; Dubery, IA Date: Oct 2021 Hyphozyma roseoniger is a filamentous yeast used for its biocatalytic ability to convert sclareol, a plant diterpenoid to ambradiol, an intermediate to ambrafuran, which is a sought-after fixative in the perfume industry. Metabolite profiling ... Read more
Gas sensing materials roadmap

Author: Wang, H ; Ma, J ; Zhang, J ; Feng, Y ; Vijjapu, MT ; Yuvaraja, S ; Surya, SG ; Salama, KN ; Tshabalala, ZP ; Akande, Amos A Date: Jun 2021 Gas sensor technology is widely utilized in various areas ranging from home security, environment and air pollution, to industrial production. It also hold great promise in non-invasive exhaled breath detection and an essential device in ... Read more
Microbial Induced Calcium Carbonate Precipitation (MICCP) for road construction

Author: Smit, Michelle A ; Akhalwaya, Imraan ; Rust, FC ; Ramdas, Veshara Date: Jul 2022 The growing concern over climate change has led the drive for the development of alternative building materials in several industries, including road construction. Bio-based construction, using Microbial Induced Calcium Carbonate Precipitation ... Read more
Nanofluids and their application in carbon fibre reinforced plastics: A review of properties, preparation, and usage

Author: Lawal, SA ; Medupin, RO ; Yoro, KO ; Okoro, UG ; Adedipe, O ; Abutu, J ; Tijani, JO ; Abdulkareem, AS ; Ukoba, K ; Sekoai, Patrick T Date: Aug 2023 Renewed call for the replacement of conventional materials with carbon fibre reinforced plastics (CFRPs) in many high-performance applications is responsible for the current wave of research on minimum quantity lubrication (MQL) strategy in ... Read more
A novel method for rapid extraction of biofibres from waste chicken feathers

Author: Kakonke, Grace ; Tesfaye, Tamrat ; Sithole, Bishop B ; Ntunka, M Date: Feb 2021 South Africa is the biggest chicken meat producer in Southern Africa and generates about 258 million kg of waste feathers. Although some of this waste is beneficiated into animal feed and fertiliser there are problems in adequate digestion ... Read more
Physico-chemical characterization of polyethylene glycol-conjugated betulinic acid

Author: Mvango, Sindisiwe ; Mthimkhulu, N ; Fru, PA ; Pilcher, LA ; Balogun, Mohammed O Date: Nov 2020 Betulinic acid (BA) is a naturally occurring plant pentacyclic triterpenoid with activity against cancer and infectious diseases like malaria and AIDS. Its pharmacological activity is limited by low aqueous solubility and bioavailability. ... Read more
Pseudocapacitive material for energy storage application: PEDOT and PEDOT:PSS

Author: Adekoya, Gholahan J ; Sadiku, RE ; Hamam, Y ; Ray, Suprakas S ; Mwakikunga, Bonex W ; Folorunso, O ; Adekoya, OC ; Lolu, OJ ; Biotidara, OF Date: Nov 2020 The total volume of solar energy reaching the earth in every second is equivalent to the total energy usage by the entire human race for three days. With this vast amount of clean energy freely available to humanity, there is still heavy ... Read more
Qualitative assessment on the surfactant traces from the organically modified nanoclay containing polymer nanocomposite

Author: Khoza, Mary ; Sinha Roy, Jayita ; Ray, Suprakas S ; Ojijo, Vincent O Date: Nov 2020 Traces of quaternary ammonium salt from dispersed nanoclay in PA6/6.6 polymer nanocomposite may have some potential toxicological effects that could pose a risk to human health. Modified nanocomposite system was produced by masterbatch melt ... Read more
A review of technologies used in handling the acid mine drainage challenge: Perspectives on using green liquor dregs as a sustainable option for treatment of acid mine drainage

Author: Sebogodi, Keolebogile R ; Johakimu, Jonas K ; Sithole, Bishop B Date: Feb 2021 Acid mine drainage (AMD) is one of the repercussions that result from earth-moving activities around the sulfide-bearing mineral hosts. The detrimental effects associated with this AMD are driven by its characteristics, which include low pH ... Read more
Role of cellulose nanofibrils in improving the strength properties of paper: A review

Author: Jele, TB ; Lekha, Prabashni ; Sithole, Bishop B Date: Nov 2021 The pursuit for sustainability in the papermaking industry calls for the elimination or reduction of synthetic additives and the exploration of renewable and biodegradable alternatives. Cellulose nanofibrils (CNFs), due to their inherent ... Read more
Structure-property relationship of the laser cladded medium carbon steel: The use of butter layer between the substrate and the top clad layer

Author: Botes, Annelize ; Bolokang, Amogelang S ; Kortidis, Ioannis ; Matjeke, V Date: Mar 2019 The structure-property relationship of the laser deposited 316 L/St 1.2311 and Fe/St 1.2311 on E9 substrate was investigated. The variation in the geometrical features of the deposited layers, width, thickness, depth of penetration into the ... Read more
Surfactant-assisted green liquor dregs pretreatment to enhance the digestibility of paper mill sludge

Author: Rorke, DCS ; Lekha, Prabashni S ; Kana, GEB ; Sithole, Bishop B Date: Jun 2021 This study optimizes a novel surfactant-assisted green liquor dregs (GLD) pretreatment of paper mill sludge (PMS), both of which are wastes from the kraft pulping industry, using a combined Response Surface Methodology (RSM) design. Optimized ... Read more
Systematic review of WAVE water treatment design software and related technologies

Author: Roopchund, R ; Andrew, Jerome E ; Sithole, Bruce B Date: Jan 2023 The water treatment industry needs customized solutions. Despite the advancement of water treatment technologies, proposed designs must pass pilot trials before industrial implementation. Technology piloting is costly and time-consuming. Water ... Read more
The thermal degradation kinetics and morphology of poly(vinyl butyral) cast films prepared using different organic solvents

Author: Motlatle, Abesach M ; Bothloko, Orebotse J ; Scriba, Manfred R ; Ojijo, Vincent O ; Ray, Suprakas S Date: Nov 2020 Polyvinyl butyral (PVB) films are highly promising materials as they combine interesting thermal and structural morphology properties and in many cases coating viability. However, the polymerization ability of PVB films through solvent casting ... Read more
Thermal properties and nonisothermal crystallization behaviour of polypropylene nanocomposite

Author: Bandyopadhyay, Jayita ; Mekoa, Raphaale C ; Skosana, Sifiso ; Ray, Suprakas S Date: Nov 2020 Nucleated polypropylene (PP) masterbatch and the nanoclay-containing composite of PP are prepared by reactive processing method to improve the thermo-mechanical properties of virgin PP. PP masterbatch and the nanocomposite exhibits pronounced ... Read more

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