Polymers: Polypropylene

Also known as polypropene, polypropylene is one of the most common thermoplastic polymers used today, with a wide range of applications. The monomer for polypropylene is known as propylene, propene, or methyl ethylene, and has the chemical formula C3H6. Aside from forming pure polypropylene, the monomer is often used in conjunction with others to form many copolymers. Polypropylene is produced through chain-growth polymerization with a Ziegler-Natta catalyst. 

Because of its range of properties, polypropylene can be used as a replacement for glasses, metals, and other polymers. It has low density and high stiffness and is resistant to heat and chemically inert. Polypropylene can be transparent when manufactured properly, can be elastic when made for film or fiber applications, and is easily recyclable. It is a member of the polyolefin class of polymers and is structurally a vinyl polymer. 

The structure of polypropylene allows for three different forms of the polymer, pictured above. The isotactic and syndiotactic forms, with their regularity, allow for a hard, semi-crystalline polymer. The atactic form, however, has a random structure and leads to an amorphous rubber-like material. Commercially produced polypropylene is typically isotactic.

Polypropylene’s applications range from packaging (in the form of films for food packaging to more rigid containers such as crates) to textiles (such as carpets and clothing) to common consumer prodcuts (like chairs and toys and dishware) to more technical applications (car parts, electric cables, laboratory usage, and even sewage pipes). It is also one of the most common materials used to create living hinges. 

there are many reasons they could be doing this, but a small juvenile orca was later seen scooping up the shreds, so my bet is that this was just a family making Orca Baby Food.

sunfish have extremely tough leathery skin with a thick layer of disgusting-tasting gel under it that gives the sunfish neutral buoyancy and also makes it too gross to bite. the traditional way to get around these issues and get at the tender flesh inside is to be a human with a fillet knife, but I guess just fucking exploding them also does the trick.