Table 1 Evaluation of molecular weight and adhesion upon exposure to aggressive environments
Test/Sample | ASTM D3359 (tape test) | ASTM D2197-13 (scrape test) | Mw (g/mol) | Mn (g/mol) | Number of Entanglements |
|---|---|---|---|---|---|
MW 60,000 | |||||
Pellet | 58,446 | 26,767 | 11.1 | ||
As-cast | 5B | >10.0 kg | 63,447 | 23,312 | 12 |
Post 150 day | 5B | >10.0 kg | 58,291 | 23,399 | 11 |
Post salt-fog | 5B | >10.0 kg | 58,512 | 25,477 | 11.1 |
MW 50,000 | |||||
Pellet | 47,863 | 22,938 | 9.1 | ||
As-cast | 5B | >10.0 kg | 53,675 | 14,034 | 10.2 |
Post 150 day | 5B | 10.0 kg | 47,214 | 20,034 | 9 |
Post salt-fog | 4B | 10.0 kg | 49,676 | 21,295 | 9.4 |
MW 35,000 | |||||
Pellet | 35,415 | 17,301 | 6.7 | ||
As-cast | 5B | >10 kg | 39,576 | 14,811 | 7.5 |
Post 150 day | 5B | 7.00 kg | 31,786 | 13,334 | 6 |
Post salt-fog | 4B | 6.50 kg | 34,285 | 16,220 | 6.5 |
