Revision as of 14:30, 16 April 2020

Basics

Pet (Plastic) is a common plastic, mainly found in disposable water bottles
HOWEVER it is very moisture sensitive, and doesn't lend itself to fdm 3d printing
PETG however is reletively in between PLA and ABS and is a great fdm plastic
As of now this page is for research on how to convert pet to petg, and see if it can be done economically
Calling all chemists!

Technically speaking PETG is a Copolymer of PET and Cyclohexanedimethanol(CHDM)
From the Filaments article:
- The first step in PETG synthesis is esterification of TPA, EG and CHDM at around 230 in a nitrogen atmosphere, this is when the first polycondensation reaction occurs in the presence of a metal catalyst, usually cobalt. The second polycondensation step is carried out at high temperature (usually around 280) under high vacuum conditions
Seems like it will be makerspace and up level due to the need for nitrogen gas, and a vacuum

@@ Line 10: / Line 10: @@
 *From the Filaments article:
 **The first step in PETG synthesis is esterification of TPA, EG and CHDM at around 230 in a nitrogen atmosphere, this is when the first polycondensation reaction occurs in the presence of a metal catalyst, usually cobalt. The second polycondensation step is carried out at high temperature (usually around 280) under high vacuum conditions
-*Seems like it will be makerspace and up level due to the need for nitrogen gas, and aa vacuum
+*Seems like it will be makerspace and up level due to the need for nitrogen gas, and a vacuum
 =See Also=