【摘要】 <正> 目前用PGC研究聚丁二烯分子1,2-和1,4-结构的工作已有较多报导,可是对1, 2-聚丁二烯（1,2-PBD）立体规正度的测定至今仍是一个新的课题。用PGC测定间规度前人也曾作了某些尝试,但未见到较好的结果。本文介绍了利用PGC对间规度不同的1,2-PBD热裂解反应研究的结果。找到了1,2-PBD间规结构的特征峰,用GC-MS鉴定该峰为异戊二烯,并探讨了1,2-PBD间规度与参数bic₅^-/hc₂^-的关系和热降解机理。更多还原

【Abstract】 Thermal degradation of polybutadiene having different syndio-1,2 contenlt has been studied by PGC. The characteristic peak in the pyrogram is identicato that of isoprene that of GC-MS. A linear relationship exists between syndi. 1, 2 content of polybutadiene and the parameter hic₅^--/hc₂^- in the pyrogram. The mechanism of degradation is discussed.更多还原