Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Chapter 17.14, Problem 8KCP
What properties of biopolymers make them suitable for biomedical applications?
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Which of these models would best give a description of viscoelastic behavior for polymers? Explain your answer
( B ) A stress of 6.7 MPa is employed to one type of a polymer under constant strain . After 40 days at 20 ° C the stress is reduced to only 8.4 MPa . When the same polymer is heated to 40 ° C the relaxation time is 40 days . 1- Calculate the relaxation time constant for this material at 25 ° C ? 2- Estimate the stress after 50 days at 25 ° C ? 3- Estimate the stress relaxation activation energy for the same polymer .
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What is the main property of a biomaterial?
Chapter 17 Solutions
Foundations of Materials Science and Engineering
Ch. 17.14 - Explain the difference between a biomaterial and...Ch. 17.14 - Explain why bone may be classified as a composite...Ch. 17.14 - Prob. 3KCPCh. 17.14 - Prob. 4KCPCh. 17.14 - Prob. 5KCPCh. 17.14 - What is stress shielding? How can it be avoided?Ch. 17.14 - Prob. 7KCPCh. 17.14 - What properties of biopolymers make them suitable...Ch. 17.14 - Prob. 9KCPCh. 17.14 - Prob. 10KCP
Ch. 17.14 - Prob. 11KCPCh. 17.14 - Prob. 12KCPCh. 17.14 - Prob. 13KCPCh. 17.14 - Prob. 14KCPCh. 17.14 - Prob. 15KCPCh. 17.14 - Prob. 16KCPCh. 17.14 - Prob. 17KCPCh. 17.14 - Prob. 18KCPCh. 17.14 - Prob. 19KCPCh. 17.14 - Prob. 20KCPCh. 17.14 - Prob. 21KCPCh. 17.14 - Prob. 22KCPCh. 17.14 - Prob. 23KCPCh. 17.14 - Prob. 24KCPCh. 17.14 - Prob. 25KCPCh. 17.14 - Prob. 26KCPCh. 17.14 - What is tissue engineering? What is the principle...Ch. 17.14 - Prob. 28KCPCh. 17.14 - Prob. 29KCPCh. 17.14 - Prob. 30AAPCh. 17.14 - Prob. 32AAPCh. 17.14 - Prob. 33AAPCh. 17.14 - Prob. 34AAPCh. 17.14 - Prob. 39SEPCh. 17.14 - Prob. 40SEPCh. 17.14 - Prob. 41SEPCh. 17.14 - Prob. 42SEPCh. 17.14 - Prob. 43SEPCh. 17.14 - Prob. 44SEPCh. 17.14 - A bone has fractured along an inclined plane as...Ch. 17.14 - Prob. 46SEPCh. 17.14 - Prob. 47SEPCh. 17.14 - Prob. 48SEPCh. 17.14 - Prob. 49SEPCh. 17.14 - What role does the water content play in the...Ch. 17.14 - Prob. 51SEPCh. 17.14 - Prob. 52SEPCh. 17.14 - When you wake up in the morning, you are taller...Ch. 17.14 - Prob. 54SEPCh. 17.14 - Prob. 55SEP
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- What factors influence the crystallinity ofpolymers? Explain the development androle of crystallinity in PET and nylon.arrow_forwardWhat monomers and polymers and give some examples of eacharrow_forwardWhat is ceiling temperature in thermodynamics of polymerization? Explain the correlation of ceiling temperature with polymers. Show the equations to support your answer.arrow_forward
- Briefly explain the shortcomings of a Maxwell mechanical model in describing the realbehaviour of polymeric materials.arrow_forwardWhen choosing a polymer for fatigue crack propagation resistance, would you typically select an amorphous thermoplastic, a semicrystalline polymer, or a heavily crosslinked material? Other than crystallinity and cross-linking, what characteristic of a polymer can have a profound effect on FCP rate?arrow_forwardPolymer Engineering question: Explain doping process and why this process important for conductive polymer?arrow_forward
- For a given polymer, the activation energy for the stress relaxation was measured to be 59kj/mol. If the stress relaxation time for this polymer at 7 degree Celsius is 3150 seconds. What is the relaxation time at 110 degree Celsiusarrow_forwardExplain how the properties and structure of different given engineering materials affect their behaviour in given engineering applications: 1) The Hep2O® push fit plumbing system uses fittings and pipe work manufactured from polybutylene (PB). Making reference to its properties and structure explain why this material is an effective substitute for traditional copper and brass.arrow_forward1. Do you think that Rapid Prototyping or medical scaffolding is a better application for MEX? Explain. 2. Why does the MEX process work better with amorphous polymers compared to crystalline polymers?arrow_forward
- Describe briefly the elastic mechanism in semi-crystalline polymers 2 . Describe briefly the plastic mechanism in semi-crystalline polymersarrow_forwardDraw the stress-strain diagram and mark the regions. How can you use stress-strain diagrams in selecting the most appropriate material for an orthopedic biomaterial?arrow_forwardIdentify a biodegradable synthetic polymeric material. Give an example of how it may be used as an implant material.arrow_forward
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Polymer Basics; Author: Tonya Coffey;https://www.youtube.com/watch?v=c5gFHpWvDXk;License: Standard youtube license