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Global Atmospheric Evolution: Impact of Anthropogenic Activities
Table 3. Assay results for Polypropylene film.
COLLECTION
WEIGHT DECOMPOSITION
CO
CO 2
CARBONYL
LOSS
ZONE
%
RATE
mgllOO mg/lOO mg/lOO mg
°C
% I mn
sample sample
sample
200 - 500
98
1.88
8.82
39.2
0.105
Table 4. Aldehydes and ketones emitted during the thermal analysis of the polypropylene
film sample.
CARBONYL COMPOUNDS
Ilg/100 mg PP
Formol
70
Acetaldehyde
10
Acrolein
7
Acetone
0
Propanal
13
2 - trans-butenal
5
Isovaleraldehyde
0.1
Pentanal
-
Pentanone
-
Total
105
3.2 Polypropylene film
The thermal analysis showed just a one-step decomposition between 200°C and
500°C. Carbonyl compounds and carbon oxides were collected during the thermal
analysis between these two temperatures. Assay results are shown in Table 3 and 4.
The ratio of aldehydes and ketones was very low.
Carbon monoxide and carbon dioxide formed simultaneously. A relatively
important quantity of carbon monoxide was emitted.