Which method is used to determine density of polymers?
Table of Contents
Which method is used to determine density of polymers?
The experts at the Smithers rubber and plastic testing labs can determine the density of polymeric materials using the immersion method as detailed in a number of international standards.
What methods are known for measuring density?
The best procedures for density determination of solids are the buoyancy and displacement methods, both of which are based on Archimedes’ Principle. Prerequisite for these methods is the use of a liquid with known density that does not react with the sample material, but wets it thoroughly.
What is the density of polymers?
Density of Polymers (by density)
| Chemical Name | Density (g/cc) |
|---|---|
| Poly(vinyl isobutyl ether) | 0.930 |
| Ethylene/vinyl acetate copolymer-14\% vinyl acetate | 0.932 |
| Styrene/butadiene copolymer-23\% styrene | 0.935 |
| Poly(butadiene-co-acrylonitrile), amine terminated-10\% acrylonitrile | 0.938 |
How do you identify different types of polymers?
Techniques used to identify a polymer include the following:
- Preliminary examination.
- Elemental analysis (Lassaigne’s Test)
- Solubility test.
- IR analysis (KBr disc)
- Flame Test/Melting Test.
- Specific gravity determination.
How do you find the density of PVC compound?
To calculate the density of the sample, divide the measured mass by the measured volume.
What is the most accurate way to measure density?
The most accurate way to determine an object’s volume, especially in the case of an irregularly shaped object, is to immerse it in water and measure the amount of water it displaces. A graduated cylinder large enough to hold both the object and enough water to fully immerse it is the best tool for this job.
What is the instrument for measuring density?
hydrometer
hydrometer, device for measuring some characteristics of a liquid, such as its density (weight per unit volume) or specific gravity (weight per unit volume compared with water).
How does density affect polymers?
If the density increases, the material becomes less ductile and full pails will crack when dropped. In most polymers, you can improve impact performance by selecting a higher molecular-weight material grade without detracting from the rest of the property profile.