Practice Questions
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Which factor is most likely to increase the glass transition temperature (Tg) of a polymer, thereby enhancing its suitability for high-temperature applications like automotive components?
Longer chains mean each segment has to move around more polymer. Other options are incorrect because Making a polymer less crystalline does not give i...
How does an increase in glass transition temperature (Tg) affect the thermal stability and processing conditions of a polymer during manufacturing?
Increasing Tg means the polymer stays firm for longer. Other options are incorrect because Many think a higher Tg hurts stability, but it is the oppos...
At what point does a polymer typically transform from a rigid state to a more flexible, rubbery form?
When heat adds energy, the tiny chains inside the polymer can move more freely, turning a stiff material into a soft, rubbery one. Other options are i...
At which temperature range would you expect a polymer to transition from a hard state to a more flexible state, indicating its glass transition temperature (Tg)?
When a polymer is heated, the energy makes its chain segments move more freely. Other options are incorrect because Many people think cold makes plast...
Which of the following scenarios best illustrates how variations in molecular weight and chemical composition can affect the glass transition temperature (Tg) and subsequently influence the manufacturing conditions for a polymer used in a medical device?
When the polymer chain is long and many chains are linked together, the material behaves more rigidly. Other options are incorrect because Cooling qui...
Which of the following statements about Polymer Glass Transition Temperature (Tg) are true? Select all that apply.
The glass transition temperature marks the point where polymer chains gain enough freedom to move, so the material becomes more flexible. Other option...
What is the primary reason that a polymer becomes flexible and rubbery above its glass transition temperature (Tg)?
When the temperature rises above Tg, the heat gives the polymer chains extra energy. Other options are incorrect because Some think polymers crystalli...
How does the Glass Transition Temperature (Tg) of polymers influence their use in high-temperature applications?
Tg is the temperature at which polymer chains begin to move more freely. Other options are incorrect because Some think Tg indicates when a polymer wi...
Which of the following statements best explains the significance of the glass transition temperature (Tg) in polymers?
Tg is the temperature where a polymer switches from a hard, glassy state to a soft, rubbery state. Other options are incorrect because The idea that T...
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