Download SGBAU B-Tech 8th Sem Poly Plast Polymer Viscoelasticity n Rheology Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) B-Tech/BE (Bachelor of Technology) 8th Sem Poly Plast Polymer Viscoelasticity n Rheology Previous Question Paper

B.Tech. Eighth Semester (Polymer (Plastic) Technology) (CGS)
11147 : Polymer Viscoelasticity & Rheology : 8 PP 02
AW - 3506 1 PIIIO
examples.
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P2 Page? 2 llllllll mm W '35?
Time : Three Hours Jo a 1 7 .. Max. Marks : 80
Notes : l. Answer three question from Section A and three question from Section B.
2. Due credit will be given to ncatness and adequate dimensions.
3. Assume suitable data wherever necessary.
4. Illustrate your answer necessary with the help of neat sketches.
5. Discuss the reaction, mechanism wherever necessary.
6. Use ofan Blue/Black ink/re?ll only for ?Tiling the answer book.
SECTION - A
l a) Discuss assemblage or state ol?aggrcgation in polymers. 6
b) Differentiate between state of aggregation and phase states of matter. 7
OR
2 a) Describe various types of relaxation processes in polymers? 6
b) What is rubber like deformation in polymer? Explain in detail. 7
3. Explain the various experimental techniques to determine the glass transition temperature. 14
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4. De?ne & discuss the follovn'ng terms with suitable examples: - 14
i) Glass transition temperature ii) C rystallization
5 a) De?ne & explain the following terms: - 7
i) Shear modulus ii) Young's modulus
iii) Bulk modulus
b) Discuss various types of viscosity & their relations. 6
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6. Explain viscoelastic behaviour of polymers by both Maxwell's & Kelvin model. 13
SECTION - B
7 a) What do you mean by ?uid? Discuss the types of?uid & give examples of ?uid. 7
b) What do you mcan by Rhcology? Give it's introduction and basic concept, with few 7

10.
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12.
AW - 3506
a)
b)
b)
a)
b)
b)
Explain the dependency 01' vnscosny with temperature.
Explain shear stress & shear rate nf ?uid ?owing through channel.
Explain the principlc, working and application ofcapillary rheomeler.
Explain entanglement concept in dctuil.
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Discuss DeByc Bucche theory 01? viscosity ofdilute solmion in detail.
What are assumptions giwn by Einstein Theor} '.7
Explain the effect ol'rhcology during, injection moulding ofpolymers?
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Discuss the principle, working and signi?cance of Bubble in?ation rhcometer.
Explain the rheological propcrtiu ut' 331mm ?lm cxlrusion ofpolymers.
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