Biomaterials06_BiomaterialsI

Biomaterials06_BiomaterialsI - EBM E 105: Biomat er ials L...

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EBME 105: Biomaterials EBME 105: Biomaterials Lecture #10: Lecture #10: Polymer Biomaterials Polymer Biomaterials Christopher J .Hernandez Christopher J .Hernandez Glennan 615A Glennan 615A (216)-368-6441 (216)-368-6441 christopher.hernandez@case.edu christopher.hernandez@case.edu
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Definition of a Polymer “Mer”originates from “meros”, which means “part”. What is a “monomer”? A monomer is a molecule consisting of a single ‘mer’. A monomer is the structural building block of a polymer. What is a “polymer”? A polymer is a long-chain molecule which is composed of many repeating monomers connected by covalent bonds. Polymers are often referred to as macromolecules. What is a “polymer biomaterial”? A polymer biomaterial is a natural polymer or a synthetic polymer that is biocompatible. The composition of polymer biomaterials primarily consist of carbons and hydrogens. Introduction to polymers, by Young and Lovell,2 nd Ed. 1991. EMAE 372 EBME 306 EBME 316 EBME 325
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Historical Background 1500’s Europeans brings “Caoutchouc” to Europe…useful for rubbing out pencil marks…renamed “rubber” 1839 Charles Goodyear develops vulcanized rubber First Industrial Polymer About.com
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Historical Background 1851: Nelson Good year patents ebonite (used for combs, battery cases, dental prostheses) 1862: Alexander Parkes develops cellulose nitrate, based on cellulose from wood and cotton (used as a replacement for ivory and tortoise shell)
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Historical Background 1870: John Hyatt combines cellulose nitrate and camphor to form Celluloid (used for photographic film, windshields for carriages) 1890: Cellulose fibers used to make rayon 1910: Cellophane introduced as a packaging film
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Ca. 1900: L.H. Baekeland invents Bakelite (first synthetic plastic) 1912: PVC, PS 1932:
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Biomaterials06_BiomaterialsI - EBM E 105: Biomat er ials L...

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