Water-Sorption Behaviors of Poly(3,4'-Oxydiphenylene Pyromellitimide) Films Depending on the Thickness Variation
- Title
- Water-Sorption Behaviors of Poly(3,4'-Oxydiphenylene Pyromellitimide) Films Depending on the Thickness Variation
- Author
- 한창수
- Keywords
- water sorption; activation energy; orientation; packing order; PMDA-3,4'ODAfilms
- Issue Date
- 2001-07
- Publisher
- JOHN WILEY & SONS INC
- Citation
- Journal of Polymer Science, Part B: Polymer Physics, v. 39, issue. 6, page. 669-676
- Abstract
- The effect of film thickness on the water-sorption behaviors of poly(3,4-oxydiphenylene pyromellitimide) (PMDA-3,4ODA) 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-3,4ODA 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. (C) 2001 John Wiley & Sons, Inc.
- URI
- https://onlinelibrary.wiley.com/doi/full/10.1002/1099-0488%2820010315%2939%3A6%3C669%3A%3AAID-POLB1041%3E3.0.CO%3B2-%23https://repository.hanyang.ac.kr/handle/20.500.11754/160378
- ISSN
- 0887-6266
- DOI
- 10.1002/1099-0488(20010315)39:6<669::AID-POLB1041>3.0.CO;2-#
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ROBOT ENGINEERING(로봇공학과) > Articles
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