What is the Difference Between PP and PPSU?

🆚 Go to Comparative Table 🆚

The main difference between PP (polypropylene) and PPSU (polyphenylsulfone) lies in their intended use, durability, and material properties. Here are the key differences between the two:

  • Intended Use: PP is a lightweight plastic intended for low to regular use, while PPSU is a medical-grade plastic designed for higher use and more durability.
  • Durability: PP is less durable than PPSU, which is a high-performance thermoplastic known for its strength and heat resistance.
  • Color: PP bottles are generally clear in color, while PPSU bottles have a natural honey tone.
  • Material Properties: PPSU is a more advanced material compared to PP, as it offers better temperature resistance, strength, and chemical resistance.

Both PP and PPSU are used in the manufacturing of baby bottles, with PP being the more common choice for regular plastic bottles and PPSU being the preferred material for medical-grade bottles. When choosing between the two, it's essential to consider factors such as the frequency of use, durability, and safety features.

Comparative Table: PP vs PPSU

The main differences between polypropylene (PP) and polyphenylsulfone (PPSU) are their intended use, appearance, and properties. Here is a table summarizing the differences between PP and PPSU:

Property PP (Polypropylene) PPSU (Polyphenylsulfone)
Intended Use Regular use, lightweight, slightly opaque color Medical-grade plastic, natural honey tone, hard-wearing
Heat Resistance Lower heat resistance (up to 230°F or 110°C) High heat resistance (up to 392°F or 200°C)
Mechanical Properties Compressive Strength: 95 to 160 MPa, Elongation at Break: 2.5 to 11%, Flexural Modulus: 13 to 17 GPa, Flexural Strength: 120 to 190 MPa, Impact Strength: Not specified Compressive Strength: 140 MPa, Elongation at Break: 26%, Flexural Modulus: 4.7 GPa, Flexural Strength: 130 MPa, Impact Strength: Not specified

Both PP and PPSU are thermoplastics, but PPSU is a high-performance polymer with more advanced properties, making it suitable for medical applications and baby bottles.