Table 2.
Identified chemical compounds in gas evolved from uncured SC adhesives heated at 190 °C for 60 s.
| Samples | Peak Number | RT (min) | SI | Compound | CAS | MW | Formula |
|---|---|---|---|---|---|---|---|
| SC 100/0 | 1 | 6.79 | 93 | 2,5-Furandicarboxaldehyde | 823-82-5 | 124 | C6H4O3 |
| 2 | 7.39 | 87 | 2,3-Dihydro-3,5-dihydroxy-6-methyl-4(4H)-pyranone | 28564-83-2 | 144 | C6H8O4 | |
| 3 | 8.22 | 94 | 5-Hydrxoymethylfurfura | 67-47-0 | 126 | C6H6O3 | |
| SC 0/100 | 1’ | 6.23 | 97 | Citraconic acid anhydride or Itaconic anhydride |
616-02-4 or 2170-03-8 |
112 | C5H4O3 |
| 2’ | 7.26 | 97 | Citraconic acid anhydride or Itaconic anhydride |
616-02-4 or 2170-03-8 |
112 | C5H4O3 | |
| 3’ | 8.51 | Unknown | |||||
| SC 25/75 | 1” | 4.77 | 94 | Furfural | 98-01-1 | 96 | C5H4O2 |
| 2” | 6.25 | 97 | Citraconic acid anhydride or Itaconic anhydride |
616-02-4 or 2170-03-8 |
112 | C5H4O3 | |
| 3” | 7.13 | 97 | Citraconic acid anhydride or Itaconic anhydride |
616-02-4 or 2170-03-8 |
112 | C5H4O3 | |
| 4” | 7.62 | 81 | Levoglucosenone | 37112-31-5 | 126 | C6H6O3 | |
| 5” | 7.66 | 80 | Maltol | 118-71-8 | 126 | C6H6O3 | |
| 6” | 8.58 | Unknown |