Gas sorption in poly(lactic acid) and packaging materials

abstract

The solubility of nitrogen, oxygen, carbon dioxide and water in poly(lactic acid) (PLA) was measured using a quartz crystal microbalance (QCM). For that purpose an apparatus based on the quartz crystal microbalance technique was built. This apparatus was calibrated with the system carbon dioxide in atactic polystyrene and the determined precision was of 3%. Measurements were performed up to atmospheric pressure and in the temperature region from 293.2 to 313.2 K. A study of the solubility of carbon dioxide in PLA over a temperature range from 283.2 to 313.2 K and at pressures bellow the atmospheric will be presented. The experimental results obtained were correlated with the Flory-Huggins model with an overall AAD of 6%. (C) 2004 Elsevier B.V. All rights reserved.

keywords

QUARTZ-CRYSTAL BALANCE; SOLUBILITY; CHROMATOGRAPHY; COEFFICIENTS; POLYSTYRENE; DIFFUSION; POLYMERS; BENZENE

subject category

Thermodynamics; Chemistry; Engineering

authors

Oliveira, NS; Oliveira, J; Gomes, T; Ferreira, A; Dorgan, J; Marrucho, IM

our authors

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".