triturated fractions of the three above mentioned
polymeric components.
This sample was defined as “simulated PC”
having the following composition: ABS, 64%, HIPS,
33%, PBT, 3%, being considered as representative of
plastic composition in personal computers. The work
proceeded by investigating a pyrolysis process
applied to the sole thermoplastic fraction inside the
PCBs, defined as “black slot”, which makes up the
inner electronic connectors. Finally, pyrolysis was
applied to “simulated PC” samples.
3.2.2 Thermal and spectroscopic (TG–FTIR)
characterization under pyrolytic conditions
TGA-FTIR results related to the thermal
decomposition of black slot samples are showed in
Fig. 4. The plot of the Gram-Schmidt curve along
with the TG diagram allows describing the reaction
trend.