Abstract
The effect of film thickness on the water-sorption behaviors of poly(3,4′-oxydiphenylene pyromellitimide) (PMDA-3,4′ODA) films was gravimetrically investigated and interpreted with a Fickian diffusion model in films. The diffusion coefficient increased with increasing film thickness, whereas the water uptake and the activation energy decreased. Overall, the water-sorption behaviors of PMDA-3,4′ODA films are strongly dependent on the changes in morphological structure, which originated from the variation in the film thickness. As the film thickness increased, the molecular in-plane orientation decreased, consequently leading to the increased diffusion coefficient and decreased activation energy. In contrast, the water uptake decreased with increasing film thickness because of the increase in the out-of-plane packing order. The diffusion coefficient and activation energy were strongly dependent on the in-plane orientation in the films.
| Original language | English |
|---|---|
| Pages (from-to) | 669-676 |
| Number of pages | 8 |
| Journal | Journal of Polymer Science, Part B: Polymer Physics |
| Volume | 39 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2001 Mar 15 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Polymers and Plastics
- Materials Chemistry
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Water-sorption behaviors of poly(3,4′-oxydiphenylene pyromellitimide) films depending on the thickness variation. / Seo, Joncchul; Han, Chang Soo; Han, Haksoo.
In: Journal of Polymer Science, Part B: Polymer Physics, Vol. 39, No. 6, 15.03.2001, p. 669-676.Research output: Contribution to journal › Article
TY - JOUR
T1 - Water-sorption behaviors of poly(3,4′-oxydiphenylene pyromellitimide) films depending on the thickness variation
AU - Seo, Joncchul
AU - Han, Chang Soo
AU - Han, Haksoo
PY - 2001/3/15
Y1 - 2001/3/15
N2 - The effect of film thickness on the water-sorption behaviors of poly(3,4′-oxydiphenylene pyromellitimide) (PMDA-3,4′ODA) films was gravimetrically investigated and interpreted with a Fickian diffusion model in films. The diffusion coefficient increased with increasing film thickness, whereas the water uptake and the activation energy decreased. Overall, the water-sorption behaviors of PMDA-3,4′ODA films are strongly dependent on the changes in morphological structure, which originated from the variation in the film thickness. As the film thickness increased, the molecular in-plane orientation decreased, consequently leading to the increased diffusion coefficient and decreased activation energy. In contrast, the water uptake decreased with increasing film thickness because of the increase in the out-of-plane packing order. The diffusion coefficient and activation energy were strongly dependent on the in-plane orientation in the films.
AB - The effect of film thickness on the water-sorption behaviors of poly(3,4′-oxydiphenylene pyromellitimide) (PMDA-3,4′ODA) films was gravimetrically investigated and interpreted with a Fickian diffusion model in films. The diffusion coefficient increased with increasing film thickness, whereas the water uptake and the activation energy decreased. Overall, the water-sorption behaviors of PMDA-3,4′ODA films are strongly dependent on the changes in morphological structure, which originated from the variation in the film thickness. As the film thickness increased, the molecular in-plane orientation decreased, consequently leading to the increased diffusion coefficient and decreased activation energy. In contrast, the water uptake decreased with increasing film thickness because of the increase in the out-of-plane packing order. The diffusion coefficient and activation energy were strongly dependent on the in-plane orientation in the films.
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U2 - 10.1002/1099-0488(20010315)39:6<669::AID-POLB1041>3.0.CO;2-#
DO - 10.1002/1099-0488(20010315)39:6<669::AID-POLB1041>3.0.CO;2-#
M3 - Article
AN - SCOPUS:0035280861
VL - 39
SP - 669
EP - 676
JO - Journal of Polymer Science, Part B: Polymer Physics
JF - Journal of Polymer Science, Part B: Polymer Physics
SN - 0887-6266
IS - 6
ER -