2. *Wide Range of Applications*: They are used in various industries including automotive, aerospace, packaging, medical, and consumer goods due to their versatility and ease of processing.
5. *Amorphous vs. Crystalline*: They can be amorphous (lacking a distinct crystalline structure) or crystalline (having an ordered molecular structure), which affects their properties and behavior.
9. *Popular Types*: Some well-known thermoplastics include polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), and polyethylene terephthalate (PET), among others.