应用化学 ›› 1990, Vol. 0 ›› Issue (5): 49-53.

• 研究论文 • 上一篇    下一篇

聚二甲基硅氧烷的通用粘度方程和无扰尺寸

于旻, 张兆谟, 宋法江, 隋雪梅   

  1. 中国科学院长春应用化学研究所 长春 130022
  • 收稿日期:1989-10-23 修回日期:1990-04-18 出版日期:1990-10-10 发布日期:1990-10-10
  • 基金资助:
    中国科学院自然科学基金

A UNIVERSAL INTRINSIC VISCOSITY-MOLECULAR WEIGHT EQUATION FOR POLYDIMETHYLSILOXANE AND ITS UNPERTURBED DIMENSION

Yu Min, Zhang Zhaomo, Song Fajing, Sui Xuemei   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1989-10-23 Revised:1990-04-18 Published:1990-10-10 Online:1990-10-10

摘要: 本文提出了用非线性方程线性化的方法化简由程镕时和严晓虎最近提出的通用粘度方程,包括求其中三个参数的方法和化简手续。可以不用计算机,手续简便。用该方法计算出了聚二甲基硅氧烷新粘度方程的三个参数 由得到的Kθ计算了聚合物的无扰尺寸。结果与其它经验方程外推结果一致。新方程得到的无扰尺寸,不受分子量范围限制,无任意性。

关键词: 聚二甲基硅氧烷, 粘度分子量方程, 无扰尺寸

Abstract: A simple and convenient procedure for the transforming the Cheng-Yan instrinsic visco-sity-molecular weight equation with three paramaters,A,B, and Kθ:[η] = Kθ[ A +(1 + AB)M1/2 + BM] into a lincar equation of M1/2:([η]-[η]o/(M1/2-Mo1/2)= [Kθ(1 + AB)+ KθBMo1/2] + KθBM1/2 was proposed.The unper turbed dimension of polydimethylsiloxane obtained from the deducedequation is in agreement with the results from the empirical equations such as KF, SF and IF equations. The new equation avoids the arbitrainess of the empirical equations inestimating the unperturbed dimension.

Key words: polydimethylsiloxane, viscosity molecular weight equation, unperturbed dimension