SOLUBILITY AND DIFFUSIVITY OF CYCLIC OLIGOMERS IN POLY(DIMETHYLSILOXANE) USING CAPILLARY COLUMN INVERSE GAS-CHROMATOGRAPHY

被引：6

作者：

BALTUS, RE ^{[1
]}

ALGER, MM ^{[1
]}

STANLEY, TJ ^{[1
]}

机构：

[1] GE CO, CORP RES, SCHENECTADY, NY 12301 USA

来源：

MACROMOLECULES | 1993年 / 26卷 / 21期

关键词：

D O I：

10.1021/ma00073a018

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理]; 080501 [材料物理与化学]; 081704 [应用化学];

摘要：

The solubility and diffusivity of octamethylcyclotetrasiloxane (D4), decamethylcyclopenta-siloxane (D5), and dodecamethylcyclohexasiloxane (D6) oligomers in poly(dimethylsiloxane) (PDMS) have been measured using inverse gas chromatography. Experiments were performed at 150, 175, and 200-degrees-C. Solubility values were used to determine the Flory-Huggins interaction parameter for each species. The interaction parameter values were found to range from -0.15 to 0.15 over the temperature range of these measurements. Diffusion coefficient values were of order 10(-6) cm2/s and were found to be in reasonable agreement with the free volume theory of Vrentas and Duda.1,2 An empirical relationship between diffusivity and solute molecular weight was developed at each temperature. Activation energies for diffusion were found to be 4.4 kcal/mol for D4 and 7.1 kcal/mol for D5 and D6.

引用

页码：5651 / 5656

页数：6

共 20 条

[1]

ARNOULD D, 1989, ACS SYM SER, V391, P87

[2]

PREDICTION OF DIFFUSION-COEFFICIENTS FOR POLYMER-SOLVENT SYSTEMS [J].