Ch 6 Notes - Chapter 6 Chapter 6 Polymers Polymers...

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Unformatted text preview: Chapter 6 Chapter 6 Polymers Polymers Divisions of Materials Science Metals Ceramics Polymers (Biomaterials) History of Materials Ceramics: prehistory Metals: ~3000BC Polymers: <1000 Natural members used by South American Indians 1700s Pencil erasers 1820 Recycling of natural rubber 1833 Charles Goodyear invents vulcanization 1909 Leo Baekeland invents Bakelite the first synthetic polymer 1927 Cellulose acetate and polyvinyl chloride (PVC) 1940s polyethylene, poyltetrafluorethylene, epoxies, polypropylene, polyethylene terephtthalate (PET), polycarbonate (PC) Chapter 6: Polymers Chapter 6: Polymers at Interfaces at Interfaces KEY CONCEPTS KEY CONCEPTS (Note the application of key concepts from previous chapters (Note the application of key concepts from previous chapters in the present discussion) in the present discussion) What are polymer molecules What are polymer molecules (monomers, polymers, (monomers, polymers, homopolymers homopolymers /block copolymers/ /block copolymers/ heteropolymers heteropolymers ) ) ? How are they ? How are they synthesized (free radical chain reactions, condensation reactio synthesized (free radical chain reactions, condensation reactio ns)? ns)? What is What is polydispersity polydispersity and how it is measured and how it is measured (polydispersity polydispersity index) index) ? What are states of polymer matter ? What are states of polymer matter (solid polymers, polymer (solid polymers, polymer solutions) solutions) ? How do polymer attach to surfaces and how do such coatings affec How do polymer attach to surfaces and how do such coatings affec t t interactions interactions (adsorption, grafting) (adsorption, grafting) ? How to measure polymer size ? How to measure polymer size (radius of gyration)? (radius of gyration)? How does polymer conformation depend on How does polymer conformation depend on polymer concentration in solutions, solvent properties? How do polymer concentration in solutions, solvent properties? How do polymers attach to surfaces polymers attach to surfaces (trains, loops and tails), (trains, loops and tails), and what are the and what are the factors that influence polymer adsorption process factors that influence polymer adsorption process (MWt MWt , solvent , solvent properties) properties) ? What factors affect kinetics of polymer adsorption ? What factors affect kinetics of polymer adsorption process? process? What are the practical applications of adsorbed polymers What are the practical applications of adsorbed polymers (colloidal (colloidal stabilization, flocculation) stabilization, flocculation) ? How do polymer coatings change in ? How do polymer coatings change in response to environment? response to environment?...
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Ch 6 Notes - Chapter 6 Chapter 6 Polymers Polymers...

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