α，ω－二丁酮肟基聚二甲基硅氧烷和α，ω－二rn(N－甲基乙酰胺基)聚二甲基硅氧烷的表征

摘要

合成了α，ω－二(N－甲基乙酰胺基)聚二甲基硅氧烷和α，ω－二丁酮肟基聚二甲基硅氧烷，用气相色谱—质谱联用仪确定了它们的组成为不同聚合程度的线形体及环体，对它们进行定量分析时发现，它们受贮存环境湿气的作用都有不同程度的水解，使成分变复杂，主要由二官能基封端线型直链聚二甲基硅氧烷、单官能基羟基封端线型直链聚二甲基硅氧烷和DMC组成。%α，ω-bis(N-methyl acetamide) and bis(2－butanone oximido) polydimethylsiloxane (PDMS) were characterized by GC-MS analysis.Mixed components of these α，ω-bisfunctional PDMS were separated by GC spectrum first and then examined by MS.Results showed they contained linear bis-fuctional radical terminated PDMS and PDMS terminated with hydroxy fuctional radical as well as some cyclic DMC on different hydrolysis degree.