Chemistry Reference
In-Depth Information
Chapter 3
S
TABILIZATION AND
M
ODIFICATION OF
P
OLYETHYLENETEREPHTHALATE
Polyethyleneterephthalate (PETP) is widely used in industry as fibres and films. PETP
belongs to thermoplastic ethers and is a product of polycondensation of ethylene glycol and
dimethylterephthalic acids [186].
Polyethyleneterephthalate is produced by two stages: interesterification of
dimethylterephthalate by ethylene glycol takes place at the first stage:
polycondensation, which flows with ethylene glycol splitting out, distilled off under
vacuum [187] takes place at the seconds stage.
PETP molecule has two characteristic features. First - it is regularity of phenylene groups
−
C
−
O
−
II
arrangement, which are linked with each other by ester groups
O
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