1 / 19

Polymers

Polymers a large molecule produced by the combination of smaller repeating units called ________________ in a polymerization reaction. Properties Properties can still be determined by structural properties! - Need to be able to ID the same intermolecular forces!. Genetic Structure.

mason
Télécharger la présentation

Polymers

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Polymers • a large molecule produced by the combination of smaller repeating units called ________________ in a polymerization reaction Properties Properties can still be determined by structural properties! - Need to be able to ID the same intermolecular forces!

  2. Genetic Structure What intermolecular force holds DNA in shape – look closely at the components…

  3. The Sugar - Which one is more reactive?

  4. Steps in Polymerization: • initiation – reagent (like _____) or free radicals • propagation • termination – 2 ends meet STOP Start keep it going to make the chain longer

  5. Addition Polymers • monomers are linked through add’nrxns (once linked the dbl bond is “used” and turned into sglbonds) • - remember in an addition rxn the dbl bond opens up – does the same in a polymer

  6. When a radical end meets another then….

  7. So why is ethene a gas and polyethene a solid??? vs.

  8. Examples

  9. Condensation Polymers • monomers are linked through condensationrxns What is critical for this reaction to continue?

  10. Where can the next bond form??

  11. 1O 2O 3O Protein Structure C-Arg-Val-Arg-Arg-cyanobenzothiazole Primary structure – order of amino acids

  12. 1O 2O 3O Secondary structure – how sections of the chain will fold

  13. 1O 2O 3O Tertiary structure – how the pieces of the chain fit together Quaternary – how the protein chain fits with other chains

  14. Example: Heme protein

  15. Polymer Strength - cross-linking – bonds are formed between chains increases strength and stability dramatically (eg proteins – disulphide bridges)

  16. 1) Can this polymer form crosslinks? 2) What other intermolecular forces could be formed?

  17. Addition or Condensation Polymer?? How do you know?

  18. Addition or Condensation Polymer? What do the monomers look like?

More Related