Mechanical Properties
This is equal to the load (force) applied over an area.
What is stress?
This type of bonding occurs between paper and adhesives.
What is mechanical bonding?
The transfer of substances originally present in the plastic material into the packaged product.
What is migration?
The most common initiator used in addition chain growth polymerization is this.
What is free radical?
These are the 3 Sanderson sisters in the movie's Hocus Pocus & Hocus Pocus 2.
Who are Winifred, Sarah and Mary?
This type of deformation observed in polymers will recover immediately once the force is removed.
What is elastic?
This is the area UNDER a stress strain curve up until the yield point.
What is resilience?
This test holds a polymer at a fixed load and measures the amount of resulting stress over time or with increased temperature.
What is stress relaxation?
If you melt PET with any of this present, it will degrade and lose molecular weight.
What is water?
In Georgia, it is illegal to eat this with a fork.
What is fried chicken?
These 2 elements are used to describe polymers because polymers are considered to be viscoelastic.
What is spring and dashpot?
This type of separation/bonding mechanism is depicted here:
What is cohesive?
These are the 4 regions of a time temperature superposition.
What are glassy, leathery, rubbery plateau, and viscous flow?
This type of catalyst is used to create linear polyethylene (HDPE).
What is Zieglar-Natta?
Of the six main characters on the TV show “Friends,” this character never got married.
Who is Joey?
The area of a stress strain curve in which there is an increase in elongation with little to no increase in stress.
What is cold drawing?
True or False. If water has a surface tension of 73 dynes/cm and PET has a surface tension of 43 dynes/cm, water will wet the surface of PET.
What is false?
This is the uptake of the product into the packaging material.
What is scalping?
This polyamide is formed using a ring-opening technique and was created to get around the Dow patent for a similar product.
What is Nylon 6?
This celebrity has hosted SNL the most.
Who is Alec Baldwin?
This region of a stress strain cure is when we will no longer view elastic deformation for even a portion of the material.
What is strain (orientation) hardening?
These two treatments can aid in the wetting of a substrate surface to aid in adhesion.
What are flame treatment & corona treatment?
When measuring the increase in weight of a salty snack package over a period of time, when there is a period of time when there is no longer any increase in weight we know that this has occured for the package, snack and the atmosphere.
What is equilibrium?
This catalyst breaks the rules that govern traditional polyethylenes and allows for unique performance characteristics.
What is metallocene?
This is the national animal of Scotland.
What is the unicorn?