Determination of the solubility and diffusivity of gases in polymers by using a high-pressure magnet-suspension-balance

被引：0

作者：

Pfannschmidt, O ^{[1
]}

Michaeli, W ^{[1
]}

机构：

[1] IKV, Inst Plast Proc, Aachen, Germany

来源：

CONFERENCE PROCEEDINGS AT ANTEC '98: PLASTICS ON MY MIND, VOLS I-3: VOL I; PROCESSING, VOL II; SPECIAL AREAS, VOL III; MATERIALS | 1998年 / 44卷

关键词：

sorption; carbon dioxide; swelling; measurement;

D O I：

暂无

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Diffusivity and solubility of gases in polymers can be determined by employing a high-pressure magnet-suspension-balance; Since the measured weight is the difference between gravity and buoyancy, the weight displayed has to be corrected. Buoyancy is a function of gas density and the sample's volume. Whereas the gas density is contingent upon temperature and pressure, the determination of the sample's volume is more complex. The volume does not only vary in dependence on temperature and pressure but also due to the absorption of gas. A method to determine the solubility considering the swelling of polymers is shown for a polyester/CO2-system.

引用

页码：1918 / 1921

页数：4