通常测定液体橡胶的分子量,采用的是粘度法或端基分析法,但对遥爪预聚物,则因其分子量较低(<10~4),而ηcp/C—C与1n η_r/C—C的曲线在稀浓度处又向上弯曲,故当C→0外推时,无法得到准确值,还因为这种预聚物的链结构中,活性端基的官能度不明确,因而上述两种方法,都 The molecular weight of liquid rubber is usually measured by the viscosity method or the end group analysis, but for the telechelic prepolymer, because of its low molecular weight (<10 ~ 4), and ηcp / C-C and 1n η_r / C The curve of -C is upwardly curved at a lean concentration so that accurate values ​​can not be obtained when C → 0 is extrapolated, and because the functionality of the reactive terminal group in the chain structure of such a prepolymer is not clear, Kind of method, all