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: Organic polymers

  1. #1

    Jul 2011
    -
    13,909

    Organic polymers

    ( ) ()

    poly () mer ɡ polymer

    .

    ()

    .


    "pitch" "resin"

    " gum" "rubber" .











    .











    .







    :
    - () polymer

    (macromolecule)

    ( 10,000 10

    ).



    (covalent bond ).

    - ( ) Monomer







    . :- n CH2=CH2 [CH2-CH2]-n


    () ()

    - structural repeating unit




    ( )

    .

    - Degree of polymerization

    Repeating Unit

    Structural Unit

    ,

    Degree Of Polymerization Dp Xn




    = X Dp .


  2. #2

    Jul 2011
    -
    13,909

    : Organic polymers

    Polymer Sources
    :-

    1- Natural Polymers








    :

    Protein ) ) ( Cellulose ) .

    2- Synthetic Polymer


    Plastics) ) Rubber) ) (Synthetic

    Leather ) Nylons) ) (Polyesters )

    (dyes ) .




    1975

    75%

    .





    .



    .



    () .

    :-
    1- Ellastomers (Rubber) .
    2- Plastics (elastic)

    .

    3- Synthetic Fibers

    .


    -

    :

    / :



    C=C



    .




    () ( Free radical)

    ( ) ( ) .



    / :-


    ()


    .


  3. #3

    Jul 2011
    -
    13,909

    : Organic polymers

    :


    1- :



    .

    2- :




    ( ).




    .

    3- :



    .

    4- ( ) : Elastomers





    500 100 %





    .

    5- : Fibers





    (10-50%)





    .

    - :

    1- :




    .

    2- :Physical properties of polymers











    .

    ( )

    .







    .





    " "

    .



    ( )

    .



    .


  4. #4

    Jul 2012
    5,298

    : Organic polymers



: 1 (0 1 )

  1. Flammability of Polymers
    .Organic chem
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    : 3
    : 01-08-2012, 12:47 AM
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    : 19-07-2012, 07:47 PM
  5. .. Organic Halides
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    : 19-07-2012, 07:46 PM

: 0