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

Expert Solution

queen_honey_blossom answered 2 years ago

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

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.

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)

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?

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?

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 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)

When looking at the glass transition temperature, what happens when above and below it? How does...

When looking at the glass transition temperature, what happens when above and below it? How does this change between thermoplastic vs. thermosetting? Amorphous vs. Crystalline? Linear vs. nonlinear? When does glass formation happen vs. crystallization? When looking at the melting temperature, what happens when above and below it? How does this change between thermoplastic vs. thermosetting? Amorphous vs. Crystalline? Linear vs. nonlinear? When does solidification happen vs. crystallization?

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

Please explain the following bio-molecular tools in detail

Please explain the following bio-molecular tools in detail DNA microarrayswestern blotsimmunoprecipitationyeast two hybrid analysisDNA footprinting

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