Anionic Ion Exchange Resins

The first report of anionic/cationic IPNs for ion exchange resins is due to Solt/ A brief quote from one of his syntheses follows  

It is especially interesting to note that this patent, issued in 1955, was written before the term interpenetrating polymer network was coined (see Section 1.3). 

In another study, Trochimczuk and co-workers swelled polyethylene with styrene/divinyl benzene mixtures. In the range of 2-20% DVB, the polystyrene network formed a continuous phase, leading to a type of dual-phase continuity. The films were then treated with methyl- 

Inert diluent/ -heptane concentration monomers) 13.3% by volume 

Fraction of Polymer II (Methacrylic Acid and DVB) Cation exchange capacity 

---

The DNP derivative, prepared from 2,4-dinitrofluorobenzene is released from the nitrogen with an anionic ion exchange resin." When used for histidine protection, the DNP group has been observed to migrate to nearby [ysine residues during Fmoc cleavage. ... 

Cataionic and anionic ion-exchange resins (50) were used as stationary phases for the separation of several analgesic drugs including salicylamide using aqueous ethanol as the mobile phase. 

Fig. 50 Synthesis of cyclic polyester using anionic ion-exchange resin...

Shibasaki-Kitakawa, N., Honda, H., Kuribayashi, H., Toda, T., Fukumura, T., and Yonemoto, T. 2007. Biodiesel production using anionic ion-exchange resin as heterogeneous catalyst. Bioresour. Technol., 98, 416 21. 

Scott W., and Furman, N. H. (ed.). 1961. Scott s Standard Methods of Chemical Analysis (5th ed., vol. 1, pg. 604). Princeton, NJ D. Van Nostrand Company Inc. Shibasaki-Kitakawa, N., Honda, H., Kuribayashi, H., Toda, T., Fukumura, T., and Yonemoto, T. 2007. Biodiesel production using anionic ion-exchange resin as heterogeneous catalyst. Bioresour. Technol., 98(2), 416-421. 

On the other hand, monoglycerides can be obtained selectively from the reaction of glycidol with fatty acids over an anionic ion-exchange resin (17). 

Three engineering uses have been proposed for ionic IPNs (1) cationic/anionic ion exchange resins, (2) piezodialysis membranes, and (3) thermoplastic IPNs. The last item is discussed briefly in Sections 5.7 and 8.7. The first two will be briefly treated here. 

Any other equivalent (cation or anion) ion-exchange resins from different manufacturers may be used. Other types of products may be better in some situations. 

Boron can readily be removed from solution by strong base anion ion exchange resin nitrate Ions would be removed simultaneously. Traces of corrosion products and llthlum-7 from the nuclear burn-up of boron-10 can be removed by cation Ion exchange resins, as also can corrosion products. 

The main advantages of cation-anion ion exchanger resin demineralization over phosphate treating or hot-lime softening of boiler feed-water is the superior reduction of silicates in steam. Silicates deposited on steam turbine blades may lead to a loss of turbine efficiency and vibration, and also stress corrosion, and sudden failure of the blades. 

Sugimoto studied the ER effect of water-containing ion exchange resin-suspension fluid and evaluated various factors that influence the ER effect [56, 57]. A basic anionic ion exchange resin to which amino or ammonium group is introduced was used as the dispersate. For measurement of induced shear stress, a double tube rotational viscometer that is able to apply an electric field was used. An alternating electric field is applied. The results are summarized in the following. 

N. Shibasaki-Kitakawa, 2007, Biodiesel production using anionic ion-exchange resin as heterogeneous catalyst. Bioresour. Technol. 98,416 21. 

Cationic and anionic ion exchange resins Foil pulse pyrolysis 400-500 °C Sulfur dioxide, benzene at 500 °C also ethyl benzene, styrene, hydrogen sulfide, toluene at higher temperatures. Anionic resins trimethylamine methyl chloride at 400 °C, and styrene, p-methyl styrene, p-ethyl styrene at 400-900 C. - [86]... 

---