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polyethylen terephthalate

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on 1 April 2014

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Transcript of polyethylen terephthalate

polyethylen terephthalate (pet)
Group:
Tomorrow Sweetest

Members:
Aya Mohsen
Gehad Ahmed
Manar Mohumed

Supervision:
Prof Dr/Wael Abd_elmoez

Contents:

History
Structure of pet
Classification
Physical properties
Chemical properties
Production technology
Application
Recycling
Price

Hisrory:

pet was patented in 1941
it was manufactured in 1949
the pet bottle was patented in 1973


Structure
Classification
Reaction to Stress and Temperature
Mechanical Strengh
and Behavior
Methods Used for
the Production
Molecular Arrangement
Type of Mesomer Involved in the polymer
Morphology of
the substance
Thermoplast
Plastic
Condensation
Linear
Crystalline
Heteropolymer
Block copolymer
Physical properties
pet in natural state is colorless
semi_crystalline resin
semi_rigid
very light weight
It make agood gas and fair moisture barrier,as well as agood barrier to alcohol
Chemical Properties
production of ethylen glycol

production of terephalic acid
pet can be synthesized by a transesterification reaction between ethylen glycol and tetephthalic acid
production technology
pet is produced from high purity ethylene glycol (EG) and terephthaic acid(PTA)
PTA+EG
Esterification
Pre_Polymer
Polymerization
Pelletization and Crystallization
PET resin
flow sheet
Recycling
Application
Plastic Bags
Bottles
Synthetic fibers
Medical Devices
Automobiles
Tasks
meeting
Division
of labor
Make a presentation
at power point
Collect the data
Collect the photos
Collect the vidoes
Make a presentation
at prezi
Meeting
Made
amodification
18/3
19/3
20/3
21/3
22/3
23/3
24/3
25/3
26/3 :31/3
Molecular
formula
(
C
10
H
8
O
4)n
Molar mass
Variable
density
1.38 g/cm3 (20c)
amorphous:(1.370)g/cm3
single crystal:(1.455)g/cm3
Melting point
>250c _260c
Boiling point
>350c
Solubility in water
practically insoluble
Thermal conductivity

0.15 to 0.24 W m−1 K−1
Full transcript