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Poly(Para-Phenylene) Ionomer Membrane Characterization.pdf

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Preview of Poly(Para-Phenylene) Ionomer Membrane Characterization

🔗 Source: rsc.org

📊 Size: 1.41 MB

👤 Author: 刘芳华

⬇️ Downloads: 114

Summary

JEOL JNM-ECA/ECX500, DMSO-d6 solvent, TMS reference.
- Molecular Weight: GPC, Jasco 805 UV detector, Shodex KF-805L column, 50°C, DMF + 0.01M LiBr eluent, polystyrene standards.

Morphology:
- TEM: Hitachi H-9500, 200 kV, Pb2+ stained samples.
- SAXS: Rigaku Nano-Viewer, 80°C, varying RH.

Ion Exchange Capacity (IEC):
- Titration with NaOH, dry membrane in 2M NaCl, IEC = ΔVNaOH × CNaOH / Wd.

Water Uptake & Proton Conductivity:
- MSBAD-V-FC analyzer, temperature/humidity control, water uptake = [(hydrated - dry) / dry] × 100, λ = water uptake / (IEC × 18), σ = L / (S × R).

Mechanical Properties:
- Tensile Strength: Shimadzu AGS-J 500N, 80°C, 60% RH, 10 mm/min.
- DMA: ITK DVA-225, 80°C, 0-90% RH, 10 Hz.

Gas Permeability:
- GTR-Tech 20XFYC, Yanaco G2700T GC, Q = 273/T × 1/A × B × 1/t × l × 1/ (76 - PH2O).

Oxidative Stability:
- Fenton's reagent (3% H2O2, 2 ppm Fe2+), 80°C, 1h.

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Description

Poly(para-phenylene) ionomer membranes with methyl and trifluoromethyl substituents were investigated. The substituents affected the membrane's properties. Spectroscopy measurements were conducted.

Technical Information

File Format: PDF
File Size: 1.41 MB
Pages: 18
Language: EN
Author: 刘芳华
Total Downloads: 114
Last Updated: 3 weeks ago

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