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Seat No.:
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Subject Code: 2172308
Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII (NEW) EXAMINATION - WINTER 2018
Subject Name: Speciality Plastics & applications
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Time: 10:30 AM TO 01:00 PM
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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- Define 1) Medical Device 2) ISO 10993 3) Biocompatibility [03]
- Write the structure and properties of ABS. [04]
- List the methods of sterilization and explain steam sterilization. [07]
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- What are antimicrobial additives? Why are they used in medical devices? [03]
- List the properties & applications of Nylons. [04]
- List the advantages of using plastics in medical devices. [07]
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OR
- Write a short note on biocompatibility of plastics used in medical devices. [07]
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- What are the requirements of plastics to be used in aerospace applications? [03]
- List and explain the methods of joining plastics using heat and friction. [04]
- Write a short note on Radiopaque additives. [07]
OR
- List the things to be considered while using additives for plastics in medical devices [03]
- Write a short note on Ethylene Oxide Sterilization. [04]
- What are nanoadditives? State the advantages of using nanoadditives. [07]
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- List the applications of Polycarbonate. [03]
- Write a short note on wear resistant and lubricious additives used for plastics in medical devices. [04]
- Draw structure and list the properties and applications of PEEK. [07]
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OR
- List the properties of Poly sulfones. [03]
- Write a short note on applications of plastics in construction sector. [04]
- Draw structure and list the properties and applications of PES. [07]
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- What are conductive fillers? [03]
- List the properties and applications of PVC [04]
- Write the structure properties and applications of PAL [07]
OR
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- State the properties of PTFE. [03]
- List any six automotive applications and the corresponding plastics used for those applications [04]
- Write a short note on Liquid Crystal Polymers. [07]
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Date: 03/12/2018
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Total Marks: 70
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