Polypropylene is a plastic that’s used in many products, including food storage containers. You can recognize it as the number 5 surrounded by a triangle on the bottom. It’s generally considered one ...

Polypropylene is a type of plastic used to make everything from yogurt containers to water bottles. It's easy to recycle and is one of the most popular plastics used today. You'll know a piece of ...

“We do it that way because we’ve always done it that way and it works.” You might hear this refrain frequently, and you might use it yourself, and there’s certainly nothing wrong with that. In fact ...

‘Xylene solubles’ (XS) is an established term indicating the percentage of soluble species in polypropylene homo- and o-polymers. This value is almost proportional to the amorphous content of the ...