Formation of Pervaporation Membranes from Polyphosphazenes Having Hydrophilic and Hydrophobic Pendant Groups: Synthesis and Characterization
A series of new polyphosphazene polymers were synthesized using three different pendant groups with the goal of probing structure-function relationships between pendant group substitution and polymer swelling/water flux through thin dense films. Formation of polymers with relative degrees of hydrophilicity was probed by varying the stoichiometry of the pendant groups attached to the phosphazene backbone: p-methoxyphenol, 2-(2-methoxyethoxy)ethanol, and o-allylphenol. The polymers in this study were characterized using NMR, thermal methods, and dilute solution light-scattering techniques. These techniques revealed that the polymers were amorphous high polymers (Mw = 105-107) with varying ratios of pendant groups as determined by integration of the 1H- and 31P-NMR spectra. Thin dense film membranes were solution-cast with azo-bis(cyclohexane)carbonitrile included in the matrix and crosslinked using thermal initiation.
- Research Organization:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- DE-AC07-99ID-13727
- OSTI ID:
- 912166
- Report Number(s):
- INEEL/JOU-99-00799
- Journal Information:
- Journal of Applied Polymer Science, Vol. 80, Issue 3
- Country of Publication:
- United States
- Language:
- English
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