‘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 ...

[Photo: courtesy Morrama] That at-home tests are made of single-use plastic isn’t all that surprising. When they were first authorized by the Food and Drug Administration in November 2020, the goal ...

Worries over a chemical that may seep out of some plastics has caused many consumers to abandon reusable water bottles. Now scientists might want to do the same thing with their test tubes. It seems ...

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 ...