Polypropylene (PP) is another widely used thermoplastic polymer, and like polyethylene, it belongs to the polyolefin family.polypropylene is a versatile and widely used thermoplastic with applications in packaging, textiles, automotive, and medical industries. Its combination of high stiffness, toughness, and chemical resistance makes it suitable for diverse applications, and ongoing research aims to enhance its environmental sustainability.
PP-Polypropylene is one of the most commonly used thermoplastics in the world. Polypropylene uses range from plastic packaging, plastic parts for machinery and equipment and even fibres and textiles.
Polypropylene (PP) is a linear hydrocarbon polymer, expressed as CnH2n. PP, like polyethylene is a polyolefin or saturated polymer. Polypropylene is one of those most versatile polymers available with applications, both as a plastic and as a fibre, in virtually all of the plastics end-use markets.
PP does not present stress-cracking problems and offers excellent electrical and chemical resistance at higher temperatures. While the properties of PP are similar to those of Polyethylene, there are specific differences. These include a lower density, higher softening point (PP doesn’t melt below 160oC) and higher rigidity and hardness. Additives are applied to all commercially produced polypropylene resins to protect the polymer during processing and to enhance end-use performance.