What are the differences between homopolymer and copolymer polypropylene in outdoor seating?

When selecting materials for outdoor seating, polypropylene is a popular choice due to its durability and resistance to weathering. However, there are two main types: homopolymer and copolymer polypropylene, each with distinct properties.

Homopolymer Polypropylene is made from a single type of monomer, resulting in a rigid and strong material. It excels in structural applications where stiffness is required, such as in heavy-duty outdoor chairs. However, it can be brittle in cold temperatures and may crack under stress.

Copolymer Polypropylene incorporates a second monomer, enhancing flexibility and impact resistance. This makes it ideal for outdoor seating exposed to varying temperatures, as it remains durable in both heat and cold. It’s also more resistant to UV degradation over time.

In summary, homopolymer is stiffer and stronger, while copolymer offers better flexibility and weather resistance. The choice depends on the specific needs of your outdoor seating application.