Define the glass transition temperature of polymers. If a polymer has a glass transition temperature of...

Define the glass transition temperature of polymers. If a polymer has a glass transition temperature of 25 °C, would you expect it to be a glassy polymer at room temperature?

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Amanda K answered 6 months ago

define the glass transition temperature of a polymer , explain the difference in the glass transition...

define the glass transition temperature of a polymer , explain the difference in the glass transition temperature values between polystyrene (Tg = 100degrees celcius) and polyethylene (Tg = -20 degrees celcius)

Why do the Elastic modulus of polymers decrease sharply at the temperature around glass transition temperature?

Glass Transition Temperature and Molecular Motion List the order of the glass transition temperatures for polyethylene,...

Glass Transition Temperature and Molecular Motion List the order of the glass transition temperatures for polyethylene, polypropylene, polyvinyl chloride, and polystyrene. PE (-80), PP (-20), PVC (85), PS (100). Define the glass transition temperature in polymer materials. – Describe the reason for this vast range of glass temperatures among these 4 materials.

Why are ceramics brittle? Can your answer also explain polymer behavior below its glass transition temperature?...

Why are ceramics brittle? Can your answer also explain polymer behavior below its glass transition temperature? Why or why not?

Define any two (i) PVC (ii) Glass Transition Temperature (iii) LDPE and (iv) Thermoplastics

Explain why the melting and glass transition temperatures of a polymer depend on its molecular weight....

Explain why the melting and glass transition temperatures of a polymer depend on its molecular weight. Your answer should include reference to free volume theory. (12)

Problem 2 : Discuss the reasons for the differences in glass transition temperature for the following...

Problem 2 : Discuss the reasons for the differences in glass transition temperature for the following sets of polymers with similar chemical structures. Be sure to write down the chemical structure in each case. (a) Poly(ethylene oxide) (232K) and poly(vinyl alcohol) (358K). (b) Poly(ethyl acrylate) (249K) and poly(methyl methacrylate) (378K). (c) Poly(ethylene terephthalate) (343K) and poly(butylene terephthalate) (323K). Note: You may wish to consult appropriate references to verify the individual structures.

Explain in detail how glass transition temperature and molecular mobilityrelate to the following: a.) a stable...

Explain in detail how glass transition temperature and molecular mobilityrelate to the following: a.) a stable drying process b.) a stable freezing process c.) a stable freeze-drying process

Explain in detail how glass transition temperature and molecular mobility relate to the following: a. A...

Explain in detail how glass transition temperature and molecular mobility relate to the following: a. A stable drying process b. A stable freezing process c. A stable freeze drying process

How does glass transition temperature relate to manufacturing process/ temperature? How does this manufacture then differ...

How does glass transition temperature relate to manufacturing process/ temperature? How does this manufacture then differ between crystalline vs. amorpohous structure? How does linear vs. nonlinear polymer effect the glass transition temperature?

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