Science, Maths & Technology
Introduction to polymers
...profiles (unplasticized or uPVC). The ubiquitous plastic bag is usually made from any of the grades of polyethylene, and polypropylene is widely used for wrapping of consumer products. Polystyrene by itself is quite brittle, so is often used in its reinforced form (HIPS), or alternatively as a lightweight foam for insulation or protecting sensitive goods in transit....