Novel ion-containing reverse osmosis membranes. I. Preparation and selected properties. [Gamma radiation]
Grafting and subsequent quaternization of 2- and 4-vinylpyridine to poly(vinyl chloride) (PVC) and to poly(3,3-bis(chloromethyl)oxetene), Penton, films have been exploited to prepare novel ion-containing membranes. 2-Vinylpyridine-grafted Penton films are the most attractive system for further study since the PVC grafts were unstable under the requisite extraction conditions. Although the sterically less hindered 4-vinylpyridine-grafted films were easier to quaternize, weight gain calculations indicated that complete quaternizations were only achieved with the 2-vinylpyridine-grafted films. High ionic concentrations were obtained in the grafted membranes. The mechanical properties of the wet films were measured. Salt absorption studies demonstrated that significant salt exclusion was achieved at relatively high salt concentrations although the grafted films sorbed up to 30 vol % water.
- Research Organization:
- North Carolina State Univ., Raleigh
- OSTI ID:
- 6570632
- Journal Information:
- J. Appl. Polym. Sci.; (United States), Journal Name: J. Appl. Polym. Sci.; (United States) Vol. 26:3; ISSN JAPNA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400600* -- Radiation Chemistry
ALKALI METAL COMPOUNDS
AZINES
BROMINATED ALIPHATIC HYDROCARBONS
CHEMICAL PREPARATION
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINATED ALIPHATIC HYDROCARBONS
CHLORINE COMPOUNDS
DIFFUSION
ELECTROMAGNETIC RADIATION
GAMMA RADIATION
GRAFT POLYMERS
HALIDES
HALOGEN COMPOUNDS
HALOGENATED ALIPHATIC HYDROCARBONS
HETEROCYCLIC COMPOUNDS
IONIZING RADIATIONS
MECHANICAL PROPERTIES
MEMBRANES
METHYL BROMIDE
MONOMERS
ORGANIC BROMINE COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
OSMOSIS
POLYMERS
POLYVINYLS
PVC
PYRIDINES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
SODIUM CHLORIDES
SODIUM COMPOUNDS
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
SYNTHESIS
VINYL MONOMERS