19 Synopsis The objectives of this experiment are to determine the tensile strengths and tensile modulus of different materials by using the modern tensile testing machine. General Purpose Polystyrene(GPPS)‚ High Impact Polystyrene(HIPS)‚ High Density Polyethylene(HDPE) and Polypropylene(PP) were the materials used as samples for this experiment. 3 specimens of each plastic were loaded into the machine and the average reading out of the 3 was recorded for more
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polymerization of styrene to form polystyrene. styrene HC styrene CH2 HC C HC CH C H CH2 CH2 CH C CH HC polystyrene + HC C CH CH HC C H HC HC CH2 CH C CH HC CH CH HC C H CH2 CH CH C H or C HC CH HC CH C H n Figure 1. Reaction scheme for the preparation of polystyrene. Polystyrene is used in molded plastics and as a foam insulator. You will synthesize polystyrene in today’s experiment. Condensation
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temperature change over a period of time has to be measured and thus‚ the enthalpy change for the reaction can be measured. The equation of the above reaction is: Zn (s) + Cu2+ (aq) → Cu2+ (s) + Zn2+ (aq) Apparatus: * * Safety spectacles * Polystyrene cup with lid * Pipette‚ 25 cm3 * Pipette filler * Weighing bottle * Spatula * Balance * Thermometer‚ 0-100∘C (0.1∘graduations) * Timer * Beaker‚ * 100 cm3 (X2) * 600 cm3 (X1) * 500 cm3 (X1) Chemicals: * Zinc
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DISPOSAL OF NON-BIODEGRADABLE THINGS IN AN ECO-FRIENDLY MANNER Non Biodegradable Waste? Non biodegradable waste is waste that cannot be broken down naturally either by air‚ climate‚ moisture or soil. This kind of waste cannot be naturally dissolved into the land. Some of the most common non biodegradable products are plastic bags and bottles‚ tin cans and even computer hardware. As we become more technologically advanced‚ we produce materials that can withstand extreme temperatures‚ are
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Strength‚ J/m² | GPPS | 3450.15 | HIPS | 8192.40 | HDPE | 5649.46 | PP | 3436.41 | 8.1 Out of the four plastic materials‚ High Impact Polystyrene (HIPS) exhibits the highest impact strength compared with the other three. This suggests that HIPS withstand impact strength best‚ followed by High density polyethylene (HDPE)‚ General Purpose polystyrene (GPPS) and Polypropylene (PP) in descending order. The reason why HIPS has a higher impact strength than HDPE is because HIPS is made of a larger
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Edexcel GCSE Additional Science Unit ASCA: Additional Science Controlled Assessment Controlled Assessment Task C2 Valid from June XXXX to May XXXX Paper Reference(s) 5SA04/01 Chemistry Unit CCA: Chemistry Controlled Assessment Controlled Assessment Task C2 Valid from June XXXX to May XXXX Paper Reference(s) 5CH04/01 These controlled assessment tasks are valid from June XXXX to May XXXX. • For assessment in January XXXX centres must submit their moderation sample(s) by 10
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evaporation losses are measured on with shade ball showing the amount of losses reduce due to evaporation and second in which evaporation losses are measured on with polystyrene sheet are will be reduce evaporation losses. And finally are pan is actual evaporation. To get the comparative results. In still the shade ball and polystyrene sheet on the water surface of the pan and set to both of 100 mm water level in the pan. We used to standard evaporation measurement time 8:30AM & 5:30 PM of the day
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The Tensile Behaviour of Common Engineering Polymers Abstract The mechanical properties of polymers vary significantly from polymer to polymer as a result of atomic structures and bond strength. The tensile properties of representative samples from the common polymer were tested and evaluated in this experiment. This laboratory experiment is also designed to demonstrate the procedure used for obtaining mechanical properties as modulus of elasticity‚ yield strength‚ ultimate tensile strength
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put back and stabilize the product. They are not already in an individual plastic box‚ but in a limp isothermal out of polystyrene. d) protective packaging To transport macaroons‚ the limp isothermal out of polystyrene maintain a temperature constant of the goods (between 0° and 2°) during 24:00 with 72h with the blocks freezing in complement. Matter is expanded polystyrene high density (20gr/litter) of 20.30 or 40 mm thickness. To be dispatched‚ the isothermal box requires an over pack out
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exchange with Amberlite IRC 748 resin were larger than with Chelex 100 resin under comparable conditions [34]. A novel chelating resin containing many amino and carboxyl functional groups‚ PS-EDTA resin‚ was prepared from chloromethylated polystyrene bead by reacting with ethylenediamine and chloroacetate in aqueous phase in sequence. Adsorption behavior of the resin for Ag (I) ions in aqueous solutions were investigated [35]. The possibility of removal of heavy metal ions Cu (II)‚ Zn
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