Download SGBAU B-Tech 5th Sem Chem Poly Plast Polymer Science n Technology Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) B-Tech/BE (Bachelor of Technology) 5th Sem Chem Poly Plast Polymer Science n Technology Previous Question Paper

B.chh. Fifth Semester (Chc.Tech.(Poly) (Plast.) Tech.) (CGS)
11113 : Elective - I : Polymer Science & Technology : 5 FEPP 05
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Time : Three Hours . o 1 s 1 . Max. Marks : 80
Notes : 1. Answer three question from Section A and three question from Section B.
2. Due credit will be given to ncatncss and adequate dimensions.
3. Diagrams and Chemical equations should be given wherever necessary.
4. Discuss the reaction, mechanism wherever necessary.
5. Use of pen Bluc/Black ink/re?ll only for writing the answer book.
SECTION - A
l a) De?ne the terms: 4
i) Monomer ii) Polymer
iii) Elastomers iv) Fibres
b) Explain in detail polydispersity and molecular weight distribution in polymers. 10
OR
2 a) What do you mean by copolymer. Explain Block and Graft copolymer. 6
b) Explain in detail the mechanism of Frec-radical polymerization. 8
3 3) Explain in brief the polymerization process. structure of polyvinyl chloride (PVC) 9
material with ?ow diagram.
b) W rite properties and application of High density polyethylene. 4
0R
4 8) Explain the limitations of polystyrene. Explain the process of copolymerimtion to 5
overcome the limitation along with examples.
b) Explain with ?ow diagram the polymerization process of low density polyethylene. 8
5 a) With the help of neat sketch. Discuss various zones in Injection molding process & 7
working process.
b) Which molding process will you choose for making clcclrical switches? Discuss the 6
compression molding process in detail with diagram.
OR
6. a) Explain with sequence process steps involved in transfer molding process. 8
b) Explain with the help ofncat sketch working ol?lnjcction molding process. 5
AW-3154 l
P.T.O

7. a)
b)
8. a)
b)
9. a)
b)
10. a)
b)
11.
12. a)
b)
AW-3154
SECTION - B
What it; the principle of extrusion? Explain with neat sketch process of pipe
manufa cturing?.?
Explain in detail blow molding cycle.
OR
What do you mean by Thermol?onning. Explain the process of thennoforming by using
straight vacuum forming technique.
Explain with neat sketch nomenclature ofcxlrudcr.
What do you mean by degrutiation. Exphxin the types of degradation.
Explain in detail the factor: zzl't?ccting the thermal degradation ofpolymcrs.
OR
What co you mean by recycling? Explain the types ofrecycling.
Explain the process of pyrolysis for polymer recycling with neat sketch.
Explain in details the application ofpolymcrs in:
i) Green Houses
ii) Mulches
iii) Seed coating
OR
Discuss various polymers used in composite manufacturing industry.
Enlist with properties the polymer materials used in communication application.
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