摘要
本文采用红外光谱的方法取代碘量法测定了ＨＮＢＲ样品的总氢化率。另一方面，本文从ＮＢＲ的微观结构出发，用红外光谱法研究了ＮＢＲ在氢化反应中微观结构的变化，并提出了各异构体的优先氢化顺序。
his paper describes a method which can determine the total degrees of hydrogenation of the HNBR samples by infrared(IR) spectrometry instead of iodometry. The further work has been done in this paper for the first time,which the degrees of hydroge nation of the three isomeric units in the rubber can be determined respectively from the IR spectra of HNBR and NBR without a knowledge of the corresponding absorption coeffients.As a result.it is demonstrated that a preferential hydrogeation reaction among these three isomeric units will be carried on in the order of cis-1,4-unit>1,2-vinyl-unit>trans-1,4-unit.
出处
《弹性体》
CAS
1997年第3期33-35,共3页
China Elastomerics
关键词
丁腈橡胶
氢化率
红外光谱法
橡胶
nitrile rubber(NBR)
degree of hydrogenation
micostructure
infrared(IR) spectrometry
