Refraction number/density of Polyethylene?

Thread starter timxtreme
Start date Jun 4, 2003
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Refraction

In summary, the refraction number or density of polyethylene is determined by its molecular weight, crystallinity, and branching structure. Higher molecular weight and crystallinity lead to a higher refraction number and density, while branching decreases these values. Refraction number and density are important factors to consider in the production and use of polyethylene, as they affect its physical and mechanical properties.

Jun 4, 2003

timxtreme

I need to know the refraction number as well as the density of conventional Polyethylene PE (not HDPE), but i didn't find them anywhere. Can you help me?

Thanks
Tim

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Jun 4, 2003

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"Texloc refractive index of polymers" contains "n," no densities, but does make the distinction between HDPE and LDPE.

1. What is the refractive index of Polyethylene?

The refractive index of Polyethylene varies depending on the type and density of the material. Generally, it ranges from 1.5 to 1.6.

2. How does the refractive index of Polyethylene affect its optical properties?

The refractive index of Polyethylene determines how light is bent or "refracted" when passing through the material. Higher refractive indices result in stronger bending of light, which can affect the appearance and clarity of the material.

3. How is the refractive index of Polyethylene measured?

The refractive index of Polyethylene is typically measured using a refractometer, which measures the angle of refraction as light passes through the material. This angle is then used to calculate the refractive index.

4. What factors can affect the refractive index of Polyethylene?

The density, temperature, and molecular structure of Polyethylene can all affect its refractive index. Other factors such as impurities or additives can also impact the refractive index of the material.

5. What applications is knowledge of the refractive index of Polyethylene important for?

The refractive index of Polyethylene is important in various industries, including packaging, optics, and medical devices. It can also be used in quality control and material identification processes.