Solubility measurements of blowing agents in polyethylene terephthalate

Document Type

Conference Proceeding

Publication Date

12-1-2006

Abstract

The solubility of various blowing agents such as CO2, N 2, Ar, pentane, isopentane, cyclopentane, butane, hexane, heptane, 1,1-difluoroethane, CO2/N2, and CO2/pentane in PET was studied using closed pressure vessels. The experiments were performed at 50-200°C and pressures up to 14 MPa. The solubilities were correlated using the Flory-Huggins equation for HFC and hydrocarbons, and via Henry's law for supercritical gases. In order of decreasing solubility, the blowing agents rank 1,1-difluoroethane > hydrocarbons > inert gases. Since the Arrhenius type behavior seemed to be able to describe the temperature dependency of the H values, the solubilities at foaming temperatures can be predicted.

Identifier

33847655556 (Scopus)

Publication Title

Society of Petroleum Engineers 5th International Conference on Thermoplastic Foam Foams 2006

First Page

120

Last Page

126

Volume

2006

This document is currently not available here.

Share

COinS