How do you find the density of polystyrene?

How do you find the density of polystyrene?

Once you have the mass and volume of the cup, you can calculate density by dividing the mass by volume. The average density of polystyrene cups as calculated by my students was . 075 g/cm3.

How do you test for polystyrene?

Polystyrene and most styrene-containing copolymers can be identified by placing a small sample in a small test tube, adding a few drops of fuming nitric acid, and evaporating the acid without having the polymer decom- pose. The residue is then heated over a small flame for approximately 1 min.

How do you measure the density of plastic?

It is calculated by dividing the mass of the material by the volume and is normally expressed in g/cm3. The density of a plastic sample may change due to change in crystallinity, loss of plasticizers, absorption of solvent, etc. It is important to note that density varies with temperature.

What is the density of polystyrene?

Polystyrene

Names
Chemical formula (C8H8)n
Density 0.96–1.05 g/cm3
Melting point ~ 240 °C (464 °F; 513 K) For Isotactic Polystyrene
Boiling point 430 °C (806 °F; 703 K) and depolymerizes

How do you calculate bulk density of plastic?

Bulk density is defined by the ratio of the mass, m, of an amount of bulk solid to its volume, V. If a bulk solid is in a container of known volume, V, one can calculate the bulk density, ρb, after having weighed the contents:(8.19)ρb=mVwhere: m=mass of the powder, V=volume of the container.

What is the density of expanded polystyrene?

EPS has a reduced thermal conductivity, with a density of about 28-45kg/m3. It therefore acts as an insulator keeping products cold or warm depending on the application.

How can you tell if plastic is polystyrene?

A yellow flame with a green tip on contact shows PVC (Polyvinyl Choride), yellow with dark smoke could be PET or Polycarbonate, and yellow with sooty, dark, smoke could be polystyrene or ABS (the plastic housing of your computer monitor).

What is polystyrene plastic?

polystyrene, a hard, stiff, brilliantly transparent synthetic resin produced by the polymerization of styrene. It is widely employed in the food-service industry as rigid trays and containers, disposable eating utensils, and foamed cups, plates, and bowls.

Which plastic has the highest density?

HDPE
HDPE is known for its high strength-to-density ratio. The density of HDPE ranges from 930 to 970 kg/m3. The standard method to test plastic density is ISO 1183 part 2 (gradient columns), alternatively ISO 1183 part 1 (MVS2PRO density analyzer).

What is the density of plastic in kg m3?

Material Densities

Material (common name) Density (kg/m3)
LDPE (Low-Density Polyethylene) 913
HDPE (High-Density Polyethylene) 941
Polypropylene 913
PVC 1,467

Is polystyrene high density?

Densities. Extruded polystyrene is extruded at very high density. This makes them perfect for thermal ceilings.

What is bulk density in plastic testing?

Plastic Properties and Testing Bulk density is the measure of the bulk of the material and is defined as the weight per volume of the raw plastic materials as purchased from the material suppler.

What is the yield strength of polystyrene?

Yield strength of Polystyrene is N/A. The Young’s modulus of elasticity of Polystyrene is 3.4 GPa. In materials science, hardness is the ability to withstand surface indentation ( localized plastic deformation) and scratching . Brinell hardness test is one of indentation hardness tests, that has been developed for hardness testing.

How is the density of polystyrene calculated?

In words, the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance. The standard SI unit is kilograms per cubic meter ( kg/m3 ). The Standard English unit is pounds mass per cubic foot ( lbm/ft3 ). Density of Polystyrene is 1050 kg/m3.

What are the properties of Crystal polystyrene film?

Polystyrene, also known commercially as crystal polystyrene or general-purpose polystyrene, is an amorphous polymer and has the particular properties of high clarity, being colorless, hard, but rather brittle. Polystyrene film can be biaxially oriented, in this form maintains clarity, and overcomes some of the brittleness of unstretched plastic.

Which is the simplest plastic based on styrene?

Polystyrene is the simplest plastic based on styrene. Its structure is shown in Figure 3.18. Pure solid polystyrene is a colorless, hard plastic with limited flexibility. Polystyrene can be transparent or can be made in various colors.

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