n
CH 3
CH 3
polystyrene PS
styrene
dimer
trimer
…
∆
∆
polyacrylamides
PAA
lignin
∆
CH 2
R
1
R
CO
CO
CO
CO
NH
NH
NH
HN
R
1
R
1
R
1
R
1
N
O
O
CH 3
N
O
O
CH 3
CH 3
N
O
O
CH 3
C
H 3
CH 3
glutarimide
2-methylglutarimide
2,4-dimethylglutarimide
+
+
+
+
+
O
R
O
O
O
R
OH
O
O
R
O
O
OH
R
R
O
O
O
O
O
OH
O
O
O
O
OH
O
O
OH
O
OH
R
O
Fig. 4.51 Polymers and their specific pyrolysis products
4.4 Analyses of Macromolecular Matter: Pyrolysis and Chemical Degradation
89