Abstract
Four different p-PDA-based polyimide thin films were prepared from their respective poly(amic acid)s through thermal imidization at 400°C: poly(p-phenylene pyromellitimide) (PMDA-PDA); poly(p-phenylene biphenyltetra carboximide) (BPDA-PDA); poly(p-phenylene 3,3′,4,4′-oxydiphthalimide) (ODPA-PDA); and poly(p-phenylene 4,4′-hexafluoroisopropylidene diphthalimide) (6FDA-PDA). Water-sorption behaviors of polyimide films were gravimetrically investigated at 25°C and 22-100% relative humidity by using the modified electromicrobalance (Thin Film Diffusion Analyzer). The diffusion coefficients of water for the polyimides varies in the range of 1.6 to 10.5 × 10-10 cm2/s, and are in the increasing order: BPDA-PDA < PMDA-PDA approx. ODPA-PDA < 6FDA-PDA. The water uptakes of polyimides vary from 1.46 to 5.80 wt %, and are in the increasing order: BPDA-PDA < ODPA-PDA < 6FDA-PDA < PMDA-PDA. The water-sorption behaviors for the p-PDA-based polyimides are closely related to the morphological structure; specifically, the diffusion coefficients in p-PDA-based polyimide thin films are closely related to the in-plane orientation and mean intermolecular distance, whereas the water uptakes are affected by the packing order.
| Original language | English |
|---|---|
| Pages (from-to) | 1315-1323 |
| Number of pages | 9 |
| Journal | Journal of Applied Polymer Science |
| Volume | 76 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2000 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Surfaces, Coatings and Films
- Polymers and Plastics
- Materials Chemistry
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Water-sorption behavior of p-phenylene diamine-based polyimide thin films. / Seo, Jongchul; Lee, Anna; Lee, Choonkeun; Han, Haksoo.
In: Journal of Applied Polymer Science, Vol. 76, No. 8, 01.01.2000, p. 1315-1323.Research output: Contribution to journal › Article
TY - JOUR
T1 - Water-sorption behavior of p-phenylene diamine-based polyimide thin films
AU - Seo, Jongchul
AU - Lee, Anna
AU - Lee, Choonkeun
AU - Han, Haksoo
PY - 2000/1/1
Y1 - 2000/1/1
N2 - Four different p-PDA-based polyimide thin films were prepared from their respective poly(amic acid)s through thermal imidization at 400°C: poly(p-phenylene pyromellitimide) (PMDA-PDA); poly(p-phenylene biphenyltetra carboximide) (BPDA-PDA); poly(p-phenylene 3,3′,4,4′-oxydiphthalimide) (ODPA-PDA); and poly(p-phenylene 4,4′-hexafluoroisopropylidene diphthalimide) (6FDA-PDA). Water-sorption behaviors of polyimide films were gravimetrically investigated at 25°C and 22-100% relative humidity by using the modified electromicrobalance (Thin Film Diffusion Analyzer). The diffusion coefficients of water for the polyimides varies in the range of 1.6 to 10.5 × 10-10 cm2/s, and are in the increasing order: BPDA-PDA < PMDA-PDA approx. ODPA-PDA < 6FDA-PDA. The water uptakes of polyimides vary from 1.46 to 5.80 wt %, and are in the increasing order: BPDA-PDA < ODPA-PDA < 6FDA-PDA < PMDA-PDA. The water-sorption behaviors for the p-PDA-based polyimides are closely related to the morphological structure; specifically, the diffusion coefficients in p-PDA-based polyimide thin films are closely related to the in-plane orientation and mean intermolecular distance, whereas the water uptakes are affected by the packing order.
AB - Four different p-PDA-based polyimide thin films were prepared from their respective poly(amic acid)s through thermal imidization at 400°C: poly(p-phenylene pyromellitimide) (PMDA-PDA); poly(p-phenylene biphenyltetra carboximide) (BPDA-PDA); poly(p-phenylene 3,3′,4,4′-oxydiphthalimide) (ODPA-PDA); and poly(p-phenylene 4,4′-hexafluoroisopropylidene diphthalimide) (6FDA-PDA). Water-sorption behaviors of polyimide films were gravimetrically investigated at 25°C and 22-100% relative humidity by using the modified electromicrobalance (Thin Film Diffusion Analyzer). The diffusion coefficients of water for the polyimides varies in the range of 1.6 to 10.5 × 10-10 cm2/s, and are in the increasing order: BPDA-PDA < PMDA-PDA approx. ODPA-PDA < 6FDA-PDA. The water uptakes of polyimides vary from 1.46 to 5.80 wt %, and are in the increasing order: BPDA-PDA < ODPA-PDA < 6FDA-PDA < PMDA-PDA. The water-sorption behaviors for the p-PDA-based polyimides are closely related to the morphological structure; specifically, the diffusion coefficients in p-PDA-based polyimide thin films are closely related to the in-plane orientation and mean intermolecular distance, whereas the water uptakes are affected by the packing order.
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U2 - 10.1002/(SICI)1097-4628(20000523)76:8<1315::AID-APP12>3.0.CO;2-4
DO - 10.1002/(SICI)1097-4628(20000523)76:8<1315::AID-APP12>3.0.CO;2-4
M3 - Article
AN - SCOPUS:0033876690
VL - 76
SP - 1315
EP - 1323
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
SN - 0021-8995
IS - 8
ER -