Table 6.

Compounds identified in the pyrograms of PET and PET-0.4G-0.2H.

NO.	Retention Time, min	Name	Content, (%)
			PET	PET-0.4G-0.2H
1, 1′	6.10	Benzene	7.6	5.2
2, 2′	7.49	Styrene	5.1	3.7
3, 3′	7.82	Acetophenone	3.9	3.1
4, 4′	7.95	Benzoic acid	34.1	39.6
5, 5′	8.53	Methyl benzoate	8.5	4.8
6, 6′	9.23	Biphenyl	7.2	4.3
7, 7′	9.47	p-ethylbenzoic acid	6.3	4.6
8, 8′	11.13	Terephthalic acid	8.7	11.3
9, 9′	12.46	p-Acetylacetophenone	5.0	7.2
10, 10′	13.56	p-Vinylbiphenyl	1.9	1.7
11, 11′	13.706	p-Phenylacetophenone	2.1	1.6
12, 12′	15.01	Ethane-1,2-diyl dibenzoate	1.7	1.4
13, 13′	15.37	Terphenyl	3.1	1.9
14, 14′	16.98	1,3-Diphenyl-1,3-propanedione	1.6	1.1
15	17.33	Phthalazine-1,4(2H,3H)-dione, 2-(2-methyl-5-nitrophenyl)	-	1.3
16	17.95	5-Ethyl-5-phenylhydantoin	-	0.9
17	20.52	1,2,4-benzenetricarboxylic acid, 3,5-dinitro-trimethyl ester	-	1.4
18	21.25	8,10,18,20,21,23-hexaene-2,7,12,17-tetrone	-	1.2
19	21.37	o-(4,6-Diphenyl-1,3,5-triazin-2-yl)phenol	-	0.8