What are Blends and Alloys? Discuss.
[3 marks]Which are the reasons to make Polymer alloy/blends?
[4 marks]How scanning electron microscope (SEM) is working? Discuss with neat diagram along with sample preparation and advantages.
[7 marks]Define the followings: 1) Homologous Polymer blend 2) Compatible polymers blend 3) Immiscible polymer blends
[3 marks]Which are the techniques used for the preparation of polymer blends? Discuss.
[4 marks]Discuss techniques for determination of polymer-polymer miscibility.
[7 marks]Explain the Huggins-Flory theory for polymer blends.
[7 marks]Two miscible polymers Aand Bare blended in weight ratio of 40:60. If the glass transition Temperature, Tg of polymer Ais -10ºC and that of polymer Bis 70ºC, calculate the Tg of the blend.
[3 marks]How to select the blend components? Explain.
[4 marks]Explain thermodynamics of polymer blends. Give Phase diagram with LCST and UCST.
[7 marks]Define: Block copolymer, graft copolymer and Interpenetrating Polymer Networks.
[3 marks]Explain the significance of Gas lattice model in blends.
[4 marks]Discuss properties and applications of PVC/NBR & PC/PBT.
[7 marks]Describe the properties and application of PPO/HIPS blends.
[3 marks]Describe the working of Two roll mills in polymer mixing with neat diagram.
[4 marks]What is compatibilizer? List various compatibilization methods and explain addition block and graft copolymerization method.
[7 marks]Write about PVC/ABS Blend.
[3 marks]Discuss various blends used to improve barrier properties for packaging applications.
[4 marks]Describe Differential scanning Calorimeter (DSC) with neat diagram.
[7 marks]What are composites? Give difference between alloys/blends and composites.
[3 marks]Discuss Interfacial Adhesion and Degree of compatibility.1
[4 marks]Write a note on : Twin screw extruder
[7 marks]Which are the properties and applications of PC/ABS Blends? Discuss.
[3 marks]Explain Melt Blending in detail.
[4 marks]Describe the working of Banbury mixture with neat diagram.
[7 marks]