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Polymer Glass Transition Temperature
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Which of the following statements best explains the significance of the glass transition temperature (Tg) in polymers?

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A

Tg indicates the temperature where a polymer becomes a good electrical conductor.

B

Tg determines the temperature range where a polymer exhibits rubbery behavior, affecting its flexibility and applications.

C

Tg is the temperature at which polymers lose all their molecular weight.

D

Tg signifies the point where polymers become insoluble in solvents.

Understanding the Answer

Let's break down why this is correct

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 Tg means a polymer starts conducting electricity is a misunderstanding; The misconception that polymers lose weight at Tg is incorrect.

Key Concepts

Glass Transition Temperature (Tg)
Polymer Properties
Thermal Behavior of Materials
Topic

Polymer Glass Transition Temperature

Difficulty

medium level question

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understand

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Definition
Definition

Polymer Glass Transition Temperature (Tg) is the temperature at which a polymer transitions from a rigid, glassy state to a flexible, rubbery state. Understanding Tg is crucial as it determines a polymer's properties like flexibility and brittleness, impacting real-world applications such as the Challenger shuttle disaster.

Topic Definition

Polymer Glass Transition Temperature (Tg) is the temperature at which a polymer transitions from a rigid, glassy state to a flexible, rubbery state. Understanding Tg is crucial as it determines a polymer's properties like flexibility and brittleness, impacting real-world applications such as the Challenger shuttle disaster.

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