Mahatma Gandhi University B.Tech Polymer Engineering speciality polymers Question paper 2014

University:  Mahatma Gandhi University
Course:  B.Tech
Subject : Polymer Engineering speciality polymers
Year of  Question Paper : 2014


VIII Sem. B. Tech. Polymer Engineering Degree Examination
Mahatma Gandhi University
PO 010 803: Speciality Polymers
Time: 3Hours                                         
Marks:100

Part A
(Answer all questions)
(Each question carries 3 marks)

1. What are the structural requirements for high temperature resistance of polymers?
2. With an example define conducting polymers
3. Define photoresist with its importance
4. With an example define ionic polymers
5. What is meant by liquid crystalline behavior? What type of polymers exhibit this
phenomenon?
(3x5 =15)

Part B
(Answer all questions)
(Each question carries 5 marks)

6. What are the general methods to improve the high temperature resistance of polymers?
7. Briefly define the conduction mechanism in polymers
8. Define the nonlinear optical properties of polymers
9. Briefly mention on the classification of ionic polymers
10. What are the different types of LCPs
(5x5 =25)

Part C
(Answer either a OR b) 
(Each question carries 12 marks)

11(a) Discuss on:
                      (i)Burning mechanism of polymers (ii) fluoropolymers (iii) polysulfones                       
(6+3+3)
OR
            (b)   Write notes on:
                  (i) Need for high temperature resistant polymers    (ii) LOI
                  (iii) Polyimides
            12(a) Discuss on the major electrical and electronic properties of polymers    
OR
                     (b) Write notes on: 
                           (i) Applications of conducting polymers (ii) Polypyrrole
                           (iii) Piezoelectric polymers
       13 (a) Discuss on semiconductor fabrication by the use of negative working and positive working                        
                   photoresist
OR
                (b) Write notes on: 
                (i) electron beam lithography  (ii) optical fibre telecommunication cable                        (6+6)
                
       14(a) Discuss on the important physical properties and major industrial applications of ionic 
                 polymers    
OR
              (b) Write notes on: 
                     (i) ionomers based on polystyrene  (ii) elastomeric ionomers
                     (iii)  ionomers based on  PTFE  
    15(a) why polymers show liquid crystalline behavior? What are the important properties and   
              applications of LCPs 
OR
          (b) Write notes on LCPs based on: 
       (i) organometallic polymers (ii) inorganic polymers
           
(12x5 =60) ...

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