Flash pyrolysis of hydroxyl-terminated polybutadiene (HTPB) I: Analysis and implications of the gaseous products

✍ Scribed by H. Arisawa; T.B. Brill

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 956 KB
• Volume: 106
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(96)00253-2

✦ Synopsis

Flash pyrolysis of structurally different hydroxyl-terminated polybutadiene polymers (HTPB) was conducted at 600°C/s to constant temperatures in the 450°-609°C range under 2 and 11 atm of applied pressure. T-Jump/FFIR spectroscopy was used. With chemometric procedures based on the entire mid-lR spectrum, 13 gaseous products representing at least 70% of the polymer were identified and quantified. Contrary to previous indications that butadiene and 4-vinyl-l-cyclohexene dominate, the trans-butadiene oligomers are major products. These oligomers are probably responsible for smoke formation. The product concentrations are sensitive to the temperature below 500°-530°C and 2 atm Ar, but are relatively insensitive to the temperature above 500°-530°C.