Download SGBAU B-Tech 4th Sem Poly Plast Polymer Chemistry Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) B-Tech/BE (Bachelor of Technology) 4th Sem Poly Plast Polymer Chemistry Previous Question Paper

B.Tech. Fourth Semester (Polymer (Plastic) Technology) (CGS)
11105 : Polymer Chemistry : 4 PP 02
P.Pages: 2 ? mum 1' I I AW-3070
Time: ThreeIIours . o 6 6 6 . Max. Marks: 80
Notes : All question carry marks. as indicated.
1
2 Answer Three question from Section "A" and Three question form Section "B".
3 Due credit will be given to neatness and adequate dimensions.
4. Assume suitable data wherever necessary.
5. Diagrams and Chemicals equations should be given wherever necessary.
6 Illustrate your answer necessary with the help of neat sketches.
7 Discuss the reaction. mechanism wherever necessary.
8 Use of pen Blue/Black ink/re?ll only for writing the answer book.
SECTION - A
l. a) What is step polymerization? Explain the chemisny of polycondensation polymerization 7
by giving suitable example.
b) Discuss the manufacturing process, chemistry and properties of aromatic polyamides. 7
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2. Explain the chemistry and properties of following step polymers:- 14
i) Aromatic polysul?de ii) Polycarbonate.
3. Explain the followings in detail:- ' 13
i) Photochemical Initiation.
ii) Radix Initiations.
OR
4. a) What do you mean by initiator ef?ciency? How would you determine initiator ef?ciency 7
experimentally?
b) What do you mean by photochemical initiation? Explain the kinetics of initiation for radical 6
chain polymerization. ' f,
5. What are the different modes of termination in cationic chain polymerization? Dtscuss in ?13
detail temlination by combination with counter ions.
OR
6. a) Compare the anionic chain polymerization with cationic chain polymerization. 6
b) Discuss the initiation of anionic polymerization, by electron transfer with the help of 7
reaction mechanism.
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SECTION - B
Discuss the various factors which affects monomer reactivity ratio. Also derive Al fray
price equation.
Explain the chemistry of Huck and graft copolymer by giving suitable cxample.
OR
What do you mean by monomer reactivity ratlo?? Explain the correlation between
monomer reactivity ratio and cnpolymcr structure.
Explain the chemistry of random and alternate copolymcr by giving suitable example.
What are stereo polymers? Discuss the chemistry of polymerization of 1.3-butadiene.
Classify Lhc polymers on lhc basis of tacticity. W hat is the effect of tacticity on the
properties of polymers.
OR
Explain in detail the reaction mechaniQm of Metalloccnc catalyst for polymerization of
I?olyole?ns.
Discuss in dctail the chemwn?y of phenol formaldehydc. Also give the prOpertics and
app?ications ol'phcnolic resin.
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Explain in detail the ?:hcm'siry of fullom'ng themmsctting resins:-
i) Epoxy
ii) Unsaturated p013.?cstcr.
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