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

Characterazation of α,ω-bis-(2-butanon oximoido) & α,ω -bis(N-methyl acetamide) PDMS by GC MS Analysis

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。

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.