Abstract
Cassava starch and expanded polystyrene [EP] (Styrofoam) were collected and converted into adhesives. Two starch-based glue were produced from the hydrolysis and dexrination of cassava starch, while the expanded polystyrene was formulated through the dissolution of the solid in benzene. The produced adhesives were tested based on their bonding capacity using four substances: thermoplastic cup, plywood, garden hose and papers. The Expanded polystyrene glue could form bonds with all four materials. The tack/drying time was also recorded during the bonding moments. The rheological properties of the formulated adhesives were studied and it was seen that the glues produced showed properties of a shear-thinning/ pseudo-plastic fluid
Highlights
The increase in environmental pollution as a result of the use of petroleum-based adhesive and the increase in the demand for adhesive with limited raw material have led to the advent of the industries looking for alternative sources or plant-based materials for the production of new, affordable, cheap and eco-friendly adhesives.[1,2,3] The increase in disposal of municipal solid waste and many miscellaneous wastes from the industry in different countries of the world has posed problems to the environment.[4]Styrofoam usually ends up in incineration or landfills which is a major source of environmental pollution to man
General Procedure Production of Adhesives from Cassava Starch The cassava starch was collected after processing and dried with the use of an oven (Vision Scientific (Japan) model-LDO-201-E) at a temperature of 50oC for eight hours to remove the amount of moisture previously present in the starch
Dextrin Starch Adhesives 40 grams of cassava starch was heated with 5ml of hydrochloric acid at 1100C using a hot plate for 45 minutes
Summary
The increase in environmental pollution as a result of the use of petroleum-based adhesive and the increase in the demand for adhesive with limited raw material have led to the advent of the industries looking for alternative sources or plant-based materials for the production of new, affordable, cheap and eco-friendly adhesives.[1,2,3] The increase in disposal of municipal solid waste and many miscellaneous wastes from the industry in different countries of the world has posed problems to the environment.[4]Styrofoam usually ends up in incineration or landfills which is a major source of environmental pollution to man. Chemical techniques involve the use of hazardous solvents.[5,6] For example, waste polystyrene takes so many years to biodegrade and is usually resistant to photo-oxidation.[7] Well, recycled waste materials such as paper, agricultural biomass, cow dung, food waste etc. Several works have been carried out on different ways by which environmental pollution can be relevant in society by recycling waste to ensure a healthier and cleaner environment.[10] Researchers have worked on the biodegradation of food waste such as citrus peel and kitchen waste to produce important products such as biogas and ethanol.[10, 12,13,14,15,16,17,18]
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