1 / 12

VT PowerPoint Template5

Antony
Download Presentation

VT PowerPoint Template5

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. Cellulose Derivatives

    3. UV Stability

    4. Cellulose textile fibers (cotton, flax, etc.) paper (pulping) building (wood) polymers: renewable resource but not benign processing (we only want to mention but not concentrate on) composites: good app, “green” materials

    5. Cellulose

    6. Cellulose Derivatives Derivatize or functionalize hydroxyls (OH) Similar rxns can be done on starch (glucose subunit in both) but these materials were abandoned b/c of inferior properties relative to cellulose derivatives Three examples: 1) viscose, 2) cellulose acetate (esters), 3) carboxy methyl cellulose (ethers) All cellulose derivatives are variations on these reactions

    7. Viscose Process

    8. Viscose Process

    9. Cellulose Acetate

    10. Cellulose Acetate Draw full ester bond for class.Draw full ester bond for class.

    11. Carboxy methyl cellulose (CMC)

    12. Cellulose Derivative Properties

More Related