Affiliated colleges' Level-1 Term-I 2020 final from Bangladesh University of Textiles covering Polymer Science and Engineering (WPE 101), with questions on polymerization mechanisms, molecular weight, glass transition temperature, and polymer degradation.
Level-1 Term-1, Final Exám-2020
Subject: Polymer Science and Engineering (Code: WPE 101)
Time: 3.0 Hrs. Full Marks: 72
(Use separate answer script for Part: A and Part: B)
(All parts of a question must be answered consecutively)
Part: A
(Answer any three questions)
1. (a) Why is the study of polymer Science important for Textile Engineering studies?
(b) Write the difference between Thermoplastic and Thermosetting Polymer.
(c) Explain the classification of Co-polymer with examples.
[3+4+5=12]
2. (a) Define chain polymerization with typical example.
(b) Describe different steps of chain polymerization.
(c) What is initiator? Give example with chemical structure.
(d) Discuss the mechanism of free radical polymerization with example.
[2+4+2+4=12]
3. (a) What is step growth polymerization? Describe different types of step growth polymerization.
(b) Compare the properties of chain and step growth polymerization.
(c) Describe the solution polymerization with its advantage and disadvantages.
[6+2+4=12]