Description
PA typically stands for “polyamide,” which is a type of polymer commonly known as nylon. Polyamides are synthetic polymers that contain recurring amide groups (-CONH-) in their molecular chains. Here are some key points about polyamides:

PA typically stands for “polyamide,” which is a type of polymer commonly known as nylon. Polyamides are synthetic polymers that contain recurring amide groups (-CONH-) in their molecular chains. Here are some key points about polyamides: