【摘要】 本文应用算图法,从实验测定的特性粘数轨迹曲线,通过一个比浓粘度的测定,获得了聚环氧氯丙烷、聚氯乙烯、聚苯乙烯、聚甲基丙烯酸甲酯和聚对苯二甲酸酚酞酯等试样的特性粘数,并将所测得的结果与外推法及常用的Maron法和Solomon-Ciuta法进行了比较。结果表明,采用算图法测定特性粘数,不但具有一般单点法所特有的快速,精确等优点,而且它的适用范围更广。更多还原

【Abstract】 Intrinsic viscosity[η]of the Polymers is generally determined based on the extrapolation method and is used in evaluating the molecular weight of polymers.The method, howerer, is lengthy and time consuming .To overcome this difficulty many methods have been suggested for calculating[η]by a single point determinatoa.This paper presents the [η] determination using a nomographic technigue from experimentally measured locus curve of intrinsic viscosity, through a single specific viscosity measurement. The[η]Values were obtained for polyepichlorohydrin, polyvjnyl chloride, polystyrene, polymethyl mithacrylate and polyphenolphthalein terephthalate samples.The results obtained were compared with the eztrapalation method, Maron method and Solomon-Ciuta method.The results showed a nomographic technique would offer not only a quisk aad accurate [η] determination but also a extended applicability.更多还原