Let us now discuss the properties of polypropylene:

Physical Properties:

• Toughness: Depending on the end use, polypropylene has a toughness value between 2.5 and 5.5g/den.

• Elongation and elasticity recovery: Polypropylene is very elastic, with elongation between 40 and 100%.

• Elasticity and wear resistance: polypropylene has good wear resistance.

• Density: Fabric is very light, lighter than water, about 0.9g/ g.

• Moisture recovery: Polypropylene has a poor moisture recovery rate of about 0%, but has good moisture removal.

• Thermal properties: Polypropylene fibers have low thermal conductivity. • Polypropylene fibers have a softening point of about 150°C and a melting point of 160-170°C. Polyester fibers are thermoplastic in nature and can be easily thermally set, thus softening and shaping.

Chemical Properties:
• The polypropylene fabric exhibits good resistance to acid, alkalis and organic solvents.

Other Properties:

• Polypropylene fabrics have very poor or no stain absorption because the plastic properties of the fibers prevent them from absorbing water, so water-based dyes cannot be fixed or inserted into the fabric structure.

• Polypropylene fabric has excellent anti-moth, anti-mold, anti-bacteria, anti-fungal properties.

• Excellent thermal and electrical insulation to retain heat for longer periods of time, which is used in winter clothing.

• The accumulation of electrostatic charge is not a property of polypro fabrics because they are non-polar structures.

• Polypropylene fabrics lose strength in sunlight and ultraviolet radiation.