What is an example of an addition polymer?
Additional polymers include polystyrene and polyethylene, as well as polyacrylates and methacrylates. Condensation polymers result from the reaction of bifunctional or polyfunctional molecules with the removal of a small molecule (such water) as a byproduct. These include polyamide, polyester, polyurethane and polysiloxane.
Which is a characteristic of condensation polymerization quizlet?
What is condensation polymerization? Each monomer can have more than one functional group.
Which is an image of a scintillation counter quizlet?
Which image is a scintillation count? A shield of material reflecting neutrons is placed around radioactive samples.
What is the main difference between condensation polymers and addition polymers quizlet?
The main difference between addition and condensing polymerization is the fact that in addition polymerization polymers are made by adding monomers with no side-products, whereas in condensation polymerization polymers are formed through the condensation of more than one monomer. This results in the …
How is a condensation polymer formed?
Condensation polymers are formed by the removal of water (or alcohols) during polymerization and the final molecular weight of the polymer is controlled by the equilibrium concentration of water or alcohols in the molten polymer at the end of the polymerization.
What type of molecules are the monomers in addition polymers?
Polymers are made up of repeating monomer units that are linked in long chains. A polymer can be compared to a necklace made of many small beads (monomers). Monomers can be alkenes, or other molecules that have double bonds and react with their unsaturated double bond.
Is PVC a thermosetting polymer?
Plastics are either thermosetting, or thermoplastic. A thermoplastic is polyvinyl chloride, (PVC). Thermosetting polymers, on the other hand, form irreversible chemical bonding as they cure and they will break down when heated. They also don’t re-form once they cool.
What is meant by thermosetting polymer?
A thermosetting polymer, also known as a resin or plastic, is a material that has been irreversibly hardened through curing from either a liquid prepolymer (or soft solid) or resin. This is usually created by the reaction between the resin and a curing agent (catalyst or hardener).
Which is not a thermosetting polymer?
Bakelite is a phenol formaldehyde-resin used in plasticware and electrical insulation. Duroplast is a light, strong material similar to bakelite that’s used in the manufacture of car parts.
What is the difference between thermoplastic and thermosetting polymer?
These are the main differences between thermoplastic plastic and thermosetting plastic ….
|Difference Between Thermoplastic and Thermosetting Plastic|
|Thermoplastics have low melting points and low tensile strength.||Thermosetting plastics have high melting points and tensile strength.|
What are the four most common thermoplastic polymers?
Thermoplastics can be mechanically recycled. Some of the most common types of thermoplastic are polypropylene, polyethylene, polyvinylchloride, polystyrene, polyethylenetheraphthalate and polycarbonate.
Which of the following is thermoplastic polymer?
A thermoplastic polymer is one that has the ability to become pliable at a certain temperature and then returns to its solid state after cooling. These are linear or slightly branched long-chain molecules. For examples, PVC, polystyrene, nylon,polyethylene etc.
Is a polymer A plastic?
Although the terms are often interchangeably used, polymers are not always the exact same thing. Polymers can be made synthetically or organically. They are composed of chains of individual molecules joined together or monomers. All plastics can be described as polymers. However, not all polymers can be called plastics.