Book of abstracts version 5

Chemical recycling to Oxazolines
Author
Ian Bouwmeester
Academy of Technology for Health and Environment
Avans Hogeschool, Breda
Jack van schijndel
Abstract
Many soft drinks are drunk from Polyethylene Terephthalate (PET) bottles. PET is made with terephthalic acid and
ethyleen. This substance is extracted from petroleum oil and petroleum is very polluting, so It is necessary to recycle PET
so that this bottle production can continue without pollution. [1]
To be able to produce a 100% recycled PET bottle we need to look at chemical recycling because it does not affect the
chain length of the polymer. In this study PET is converted by aminolysis to bis (2 -hydroxyethylene) terephthalamide
(BHETA) where BHETA can be converted to 1,4-bis (4,5-dihydro-3H-1,3-oxazin-2-yl) benzene (PBOx5). In addition to the
use of PET, this study looks into whether an oxazoline can be made from PLA (PolyLacticAcid). [2] [3]
to make PBOx5 first step is to make BHETA from PET in the reaction ethanolamine and catalyst is used. In this sub -study it
is investigated whether a catalyst has a positive influence on the yield of BHETA. In addition, it is examined with which
method the highest yield can be achieved. A microwave reflux synthesis varied between 5 to 8 minutes is compared with
a 5 hours reflux. In the reaction of BHETA to PBOx5 two catalysts are compared thionyl chloride and oxalyl chloride in 18
hour stir reaction. PLA reaction is done with the same method as PET
The maximum yield is expected to be the microwave synthesis of 7 minutes in addition, thionyl chloride is expected to
generate the highest yield of PBOx5. It is also expected that it is possible to make PLA an oxazoline.
Keywords: Oxazoline, PET, PLA
Table of content
Figure 12:Reaction of PET to PBOx5.
[1] N. Pingale en S. Shukla, „Microwave-assisted aminolytic depolymerization of PET waste,” European Polymer Journal, p.
2695–2700, 2009.
[2] G. M. M. S. Sadeghi en M. Sayaf, „From PET Waste to Novel Polyurethanes,” Material Recycling – Trends and
Perspectives, pp. 357-363, 2012.
[3] R. V. Shah, V. S. Borude en S. R. Shukla, „Recycling of PET Waste Using 3 -Amino-1-propanol by Conventional or,”
natural of applied polymer science, 2012.
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