The sorption kinetics and equil. isotherms of CH2Cl2, heptane and their mixts. in glassy amorphous PEEK were investigated. Ideal or anomalous nonideal Fickian diffusion sorption mechanism or diffusion-controlled swelling were obsd., depending on temp., solvent type, and external solvent activity. Gas-chromatog. anal. of PEEK in contact with CH2Cl2/heptane mixts. indicated that the presence of CH2Cl2 enhanced heptane mobility and equil. sorbed amt.
Solvent mixtures sorption in amorphous PEEK / Mensitieri, Giuseppe; Apicella, A.; Del Nobile, M. A.; Nicolais, Luigi. - In: POLYMER BULLETIN. - ISSN 0170-0839. - STAMPA. - 27:3(1991), pp. 323-330.
Solvent mixtures sorption in amorphous PEEK
MENSITIERI, GIUSEPPE;NICOLAIS, LUIGI
1991
Abstract
The sorption kinetics and equil. isotherms of CH2Cl2, heptane and their mixts. in glassy amorphous PEEK were investigated. Ideal or anomalous nonideal Fickian diffusion sorption mechanism or diffusion-controlled swelling were obsd., depending on temp., solvent type, and external solvent activity. Gas-chromatog. anal. of PEEK in contact with CH2Cl2/heptane mixts. indicated that the presence of CH2Cl2 enhanced heptane mobility and equil. sorbed amt.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
