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2003 Course Polymer Technology (Elective I)

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Total No. of Questions : 12] [Total No. of Pages : 2 [3864] - 328 P 1091 B.E. (Chemical) POLYMER TECHNOLOGY (2003 Course) (409341) (Elective - I) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer 3 questions from Section I and 3 question from Section II. 2) Answers to the two sections should be written in separate answer books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Assume suitable data, if necessary. SECTION - I Q1) What is polymer? Classify the different polymers based on structure and source, crystallinity etc. Give suitable examples for each case. [16] OR Q2) a) b) Classify the different polymers based on there properties i) Thermoplastic and thermosetting polymers. ii) Linear and cross linked polymers. What are factors influences the polymer properties? [8] [8] Q3) What are different polymerization techniques are used for synthesis of polymer. Explain in detail batch polymerization alongwith limitations in Engineering aspect point of view. [16] OR Q4) a) b) Q5) a) b) Explain suspension polymerization in detail along with engineering aspects and examples to use these techniques in Industries. [8] What is difference between suspension and emulsion polymerization. Explain merits of emulsion polymerization to form monodispersed mini emulsion small size latex synthesis. [8] What do you mean by polydispersity index? Explain number average molecular wt, viscosity avg mol. wt and degree of polymerization. [8] Explain effect of molecular wt on Engg. properties of polymers. [10] OR P.T.O.

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