Polymers

The small molecules that forms the large molecules are called _________.

• Polymer

• Monomers

• Copolymers

• Economer

True or False. Air pressure and vacuum are both used in pressure forming.

• True

• False

• In some cases

• I don't know

Which material is the most hygroscopic and is capable of containing as much as 9%of its weight in water?

• Ethanol

• Honey

• Glycerin

• Nylon 6

It is composed of the protein keratin, which consists of long polypeptide chains built from eighteen different amino acids.

• DNA

• Cellulose

• Wool

• Protein

It is a transparent plastic material with outstanding strength, stiffness and optical clarity. It is easy to fabricate, bonds well with adhesives and solvents, and is easy to thermoform. It has superior weathering properties compared to many other transparent plastics.

• Silk

• Acrylic

• Wool

• Polymer

True or False. Parison is the raw material used in blow molding.

• True

• False

• Sometimes

• I don't Know

Of what range Elastomers can stretch and return to their original lengths without any trouble?

• 80% - 100%

• 500% - 1000%

• 50% - 100%

• 800% - 1000%

What structure of polymers are tied together via covalent bonding?

• Linear Polymers

• Branched Polymers

• Cross-linked Polymers

• Network Polymers

At what degree Celsius does thermoplastic reach its softening point where it can be stretched to its desired shape?

• 20 degree Celsius

• 250 degree Celsius

• 25 degree Celsius

• 200 degree Celsius

It is a natural polymer originating from various insect and spider species. It is composed of two different proteins, sericin and fibroin, among which fibroin is an FDA-approved materials for some medical devices.

• Silk

• Wool

• Nylon

• Cellulose