Polymerization Mechanisms
Chemistry ⇒ Polymers and Macromolecules
Polymerization Mechanisms starts at 11 and continues till grade 12.
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A student observes that the polymerization of styrene proceeds rapidly after the addition of benzoyl peroxide. What type of polymerization is this?
Describe the propagation step in free radical polymerization.
Describe the role of an initiator in free radical polymerization.
Explain the difference between homopolymerization and copolymerization.
Explain why addition polymerization is also called chain-growth polymerization.
Explain why condensation polymerization can produce both linear and cross-linked polymers.
A student observes that the polymerization of styrene proceeds rapidly after the addition of benzoyl peroxide. What type of polymerization is this?
In a laboratory experiment, a student mixes adipic acid and hexamethylenediamine and heats the mixture. Which type of polymerization is taking place?
Which of the following is a by-product of the condensation polymerization of nylon-6,6? (1) Water (2) Hydrogen (3) Oxygen (4) Methane
Which of the following is a characteristic of free radical polymerization? (1) Requires light or heat to generate radicals (2) Always produces a by-product (3) Only occurs in aqueous solution (4) Does not require an initiator
Which of the following is a characteristic of step-growth polymerization? (1) Monomers must have at least two functional groups (2) Only one type of monomer is used (3) No by-product is formed (4) Only free radicals are involved
Which of the following is a feature of living polymerization? (1) No chain termination (2) No initiator required (3) By-product formation (4) Only occurs in water
Fill in the blank: In ________ polymerization, the growth of polymer chains occurs by successive addition of monomer units to an active center.
Fill in the blank: In free radical polymerization, the termination step can occur by ________ or by combination of two radicals.
Fill in the blank: The polymerization of caprolactam to form nylon-6 is an example of ________ polymerization.
In addition polymerization, the monomers must contain ________ bonds.
True or False: Condensation polymerization always produces a small molecule as a by-product, such as water or HCl.
True or False: In cationic polymerization, the active center is a positively charged ion.
True or False: In chain-growth polymerization, the polymer chain grows by the successive addition of monomer units to an active site.
True or False: In ionic polymerization, the initiator can be either a cation or an anion.
