part_II-Polymers - Biomaterials: Properties, Types and...

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1 Biomaterials: Properties, Types and applications MECH 634- SPRING SEMESTER 2008 Part II- Polymers Prepared by: Nasser-Eddin M., Ph.D
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2 3.4 Polymers 3.4 Polymers ± Polymers are well suited for biomedical applications because of their diverse properties. ± polymers can be flexible or rigid ± can be low strength or high strength ± are resistant to protein attachment or can be modified to encourage protein attachment ± can be biodegradable or permanent ± can be fabricated into complex shapes by many methods
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3 Polymers Polymers - - cont. cont. ± Some disadvantages of polymers are that they tend to have lower strengths than metals or ceramics ± deform with time, may deteriorate during Sterilization ± may degrade in the body catastrophically or by release of toxic by-products.
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4 Materials and Their Medical Uses-III Mechanical Properties of Materials with Literature Values or Minimum Values from Standards
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5 Polymers Polymers - - Cont. Cont. The large macromolecules of commercially useful polymers are synthesized by combining smaller molecules (mers) in a process termed polymerization. Polymerization may proceed by addition (or chain reaction) polymerization, in which monomer units are attached one at a time and then terminated, or by condensation (or step reaction) polymerization, in which several
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part_II-Polymers - Biomaterials: Properties, Types and...

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