FirstRanker Logo

FirstRanker.com - FirstRanker's Choice is a hub of Question Papers & Study Materials for B-Tech, B.E, M-Tech, MCA, M.Sc, MBBS, BDS, MBA, B.Sc, Degree, B.Sc Nursing, B-Pharmacy, D-Pharmacy, MD, Medical, Dental, Engineering students. All services of FirstRanker.com are FREE

📱

Get the MBBS Question Bank Android App

Access previous years' papers, solved question papers, notes, and more on the go!

Install From Play Store

Download GTU BE/B.Tech 2017 Winter 8th Sem New 2182302 Polymer Alloys And Blends Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2017 Winter 8th Sem New 2182302 Polymer Alloys And Blends Previous Question Paper

This post was last modified on 20 February 2020

GTU BE/B.Tech 2017 Winter Question Papers || Gujarat Technological University


FirstRanker.com

Subject Code: 2182302

GUJARAT TECHNOLOGICAL UNIVERSITY

--- Content provided by⁠ FirstRanker.com ---

BE - SEMESTER-VIII (NEW) EXAMINATION — WINTER 2017
Subject Name: Polymer Alloys and Blends
Time: 02:30 PM TO 05:00 PM
Date: 02/11/2017
Total Marks: 70

--- Content provided by​ FirstRanker.com ---

Instructions:

  1. Attempt all questions.
  2. Make suitable assumptions wherever necessary.
  3. Figures to the right indicate full marks.
  1. Q.1 (a) What are Blends and Alloys? Discuss. [03]

    --- Content provided by FirstRanker.com ---

    (b) Which are the reasons to make Polymer alloy/blends? [04]
    (c) How scanning electron microscope (SEM) is working? Discuss with neat diagram along with sample preparation and advantages. [07]

  2. Q.2 (a) Define the followings: 1) Homologous Polymer blend 2) Compatible polymers blend 3) Immiscible polymer blends [03]
    (b) Which are the techniques used for the preparation of polymer blends? Discuss. [04]

    --- Content provided by‌ FirstRanker.com ---

    (c) Discuss techniques for determination of polymer-polymer miscibility. [07]

    OR

    (a) Explain the Huggins-Flory theory for polymer blends. [07]

  3. Q.3 (a) Two miscible polymers A and B are blended in weight ratio of 40:60. If the glass transition Temperature, Tg of polymer A is -10°C and that of polymer B is 70°C, calculate the Tg of the blend. [03]

    --- Content provided by​ FirstRanker.com ---

    (b) How to select the blend components? Explain. [04]
    (c) Explain thermodynamics of polymer blends. Give Phase diagram with LCST and UCST. [07]

    OR

    (a) Define: Block copolymer, graft copolymer and Interpenetrating Polymer Networks. [03]

  4. --- Content provided by‍ FirstRanker.com ---

  5. Q.4 (a) Explain the significance of Gas lattice model in blends. [04]
    (b) Discuss properties and applications of PVC/NBR & PC/PBT. [07]

    OR

    (a) Describe the properties and application of PPO/HIPS blends. [03]

  6. --- Content provided by​ FirstRanker.com ---

  7. Q.5 (a) Describe the working of Two roll mills in polymer mixing with neat diagram. [04]
    (b) What is compatibilizer? List various compatibilization methods and explain addition block and graft copolymerization method. [07]

    OR

    (a) Write about PVC/ABS Blend. [03]

  8. --- Content provided by​ FirstRanker.com ---

  9. Q.5 (a) Discuss various blends used to improve barrier properties for packaging applications. [04]
    (b) Describe Differential scanning Calorimeter (DSC) with neat diagram. [07]

  10. Q.5 (a) What are composites? Give difference between alloys/blends and composites. [03]
    (b) Discuss Interfacial Adhesion and Degree of compatibility. [04]

    --- Content provided by⁠ FirstRanker.com ---

  11. Q.5 (a) Which are the properties and applications of PC/ABS Blends? Discuss. [03]
    (b) Explain Melt Blending in detail. [04]
    (c) Describe the working of Banbury mixture with neat diagram. [07]

  12. --- Content provided by‍ FirstRanker.com ---

FirstRanker.com



This download link is referred from the post: GTU BE/B.Tech 2017 Winter Question Papers || Gujarat Technological University

--- Content provided by FirstRanker.com ---