Polymer Reactions Flashcards
What type of reaction occurs when polymers react with bromine?
Halogenation
True or False: Chlorination of polymers typically results in an increase in polymer polarity.
True
Fill in the blank: The reaction of hydrogen with polymers is known as __________.
Hydrogenation
Which halogen is commonly used in the reaction with unsaturated polymers?
Bromine
What is the primary effect of chlorine on polymer properties?
Increased thermal stability
Multiple Choice: What is a common application of brominated polymers?
A) Adhesives
B) Flame retardants
C) Coatings
D) All of the above
D) All of the above
True or False: The hydrogenation of polymers can lead to increased saturation and stability.
True
What is the main purpose of adding bromine to a polymer?
To enhance fire resistance
Fill in the blank: Chlorination can improve the __________ of a polymer.
Compatibility
Which type of polymer is most likely to react with bromine?
Unsaturated polymers
Multiple Choice: Which of the following is NOT a characteristic of chlorinated polymers?
A) Increased flexibility
B) Enhanced UV resistance
C) Lower thermal stability
D) Higher density
A) Increased flexibility
What is the effect of hydrogenation on the physical properties of a polymer?
It generally increases hardness and thermal stability.
True or False: Bromine can be used to modify the mechanical properties of polymers.
True
Fill in the blank: The process of adding bromine or chlorine to a polymer chain is called __________.
Halogenation
What is a potential environmental concern associated with the use of brominated polymers?
Toxicity and persistence in the environment
Multiple Choice: Which reaction is used to introduce double bonds in polymers?
A) Halogenation
B) Hydrogenation
C) Dehydrogenation
D) Polymerization
C) Dehydrogenation
What is the role of catalysts in hydrogenation reactions of polymers?
To speed up the reaction without being consumed.
True or False: The addition of chlorine to polymers can lead to improved weather resistance.
True
Fill in the blank: The reaction of a polymer with bromine typically occurs at __________ sites.
Double bond
What is the common method used to analyze the extent of halogenation in polymers?
NMR spectroscopy
Multiple Choice: Which of the following polymers is most commonly brominated?
A) Polyethylene
B) Polystyrene
C) Polyvinyl chloride
D) Polypropylene
B) Polystyrene
What is the advantage of using hydrogenation in polymer chemistry?
It improves the stability and mechanical properties of the polymer.
True or False: Chlorinated polymers are often used in electrical insulation.
True
Fill in the blank: The process of breaking down polymer chains through reaction with halogens is called __________.
Degradation
