This download link is referred from the post: SGBAU B.Tech Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university
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B.Tech. Third Semester (Polymer (Plastic) Tech.) (CGS)
11095 : Chemistry and Technology of Polymers : 3 PP 01
Pages: 2 AW -2999
Time : Three Hours Max. Marks : 80
Notes:
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- All question carry marks as indicated.
- Answer three question from Section A and three question from Section B.
- Due credit will be given to neatness and adequate dimensions.
- Assume suitable data wherever necessary.
- Diagrams and chemical equations should be given wherever necessary.
- Illustrate your answer necessary with the help of neat sketches.
- Discuss the reaction, mechanism wherever necessary.
- Use of cell phone is not allowed in exam.
- Use of pen Blue/Black ink/refill only for writing the answer book.
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SECTION - A
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- a) Define polymer. Explain linear, branched and crosslinked polymer in detail.
b) Give the structural formula and IUPAC names of the following: -- Polystyrene.
- Polyethylene.
- Polyethylene terephthalate.
- a) Differentiate between the followings:-
- Thermoplastics and Thermosets.
- Block and Graft polymers.
- a) Explain the manufacturing process for styrene monomer with flowchart.
b) Explain the manufacturing process for butadiene with flow chart. OR - a) Explain the manufacturing process for methyl methacrylate (MMA) with flow chart.
b) Discuss the manufacturing process of phenol with flow chart in detail. - a) Explain in detail the application of NMR and IR.
b) Explain in detail X-ray diffraction method for analysis of monomer. OR
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- Explain the following methods for analysis of polymer:
- HPLC
- GLC
- TLC
SECTION - B
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- a) Explain in detail the relationship both functionality extent of reaction and degree of polymerization.
b) Derive the Carothers equation and its application. OR - a) What is functionality concept? Which are the functional groups involved in the synthesis of polyamide?
b) Explain the polyaddition reaction by giving suitable example. - Explain the following methods for determination of molecular weight of polymer:-
- Osmotic pressure.
- Ultra centrifugation.
- Viscosity.
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- a) Explain the number average molecular weight and weight average molecular weight in detail.
b) Explain the end group analysis method for determination of molecular weight of polymer. - a) What are different types of degradation? Discuss the chemical degradation and hydrolysis mechanism to achieve stability.
b) Explain mechanical degradation in short. OR - a) What is thermal degradation of polymer? Explain with reference to depolymerization.
b) Explain the oxidative type of degradation and how it is stabilized.
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This download link is referred from the post: SGBAU B.Tech Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university
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