Polypropylene is a 100% synthetic textile fiber. It is basically formed by about 85% propylene. Besides, the monomer of polypropylene is propylene and propylene is a by-product of petroleum. It is cheap in price than polyester. It is also used as an alternative to plastic. Hence, this polypropylene is harmful to the environment. It is not degraded with soil, so it causes harm to the soil. Also, it is not decomposed by water for this reason it is used as the rope of a ship. Its moisture regain is too much less which is negligible to count.
Now, I like to present the physical and chemical properties of polypropylene.
Physical Properties of Polypropylene:
Polypropylene is a strong fiber. The following are the physical properties of polypropylene. They are-
- Tenacity: 3.5 – 8.0 gm/den
- Density: 0.91 gm/c.c
- Elongation at break: 10 – 45%
- Elasticity: Very good
- Moisture Regain (MR%): 0%
- Resiliency: Good
- Melting point: 1700C
- Ability to protest friction: Excellent
- Color: White
- Ability to protest heat: Moderate
- Luster: Bright to light
Chemical Properties of Polypropylene:
The following are the chemical properties of polypropylene. They are-
- Acids: Acid does not affect polypropylene. It has excellent protesting ability against acids.
- Basic: Basic does not affect basic.
- Effect of bleaching: It has enough ability to prevent the harmful action of bleaching agents under 65oC.
- Organic solvent: Organic solvent does not cause harm to polypropylene during the action.
- Protection ability against light: It loses energy from sunlight.
- Protection ability against mildew: Good
- Protection ability against insects: It does not affects by insects.
- Dyes: Difficult to dye polypropylene because its moisture regain is 0%. But pigment dyeing is possible.
So, polypropylene is a harmful product to the environment. Although it has some application in some special cases we should ignore it for our environmental safe.