What is the structure of ion exchange resin?
An ion-exchange resin or ion-exchange polymer is a resin or polymer that acts as a medium for ion exchange. It is an insoluble matrix (or support structure) normally in the form of small (0.25–1.43 mm radius) microbeads, usually white or yellowish, fabricated from an organic polymer substrate.
What are the characteristics of ion exchange resin drug complexes?
Ion exchange resins have specific properties like available capacity, acid base strength, particle size, porosity and swelling properties. The ion exchange resins are complexed with drug to form resinates by batch or column process.
Which polymer is used preparation of ion exchange resin?
Amination of vinylbenzyl chloride-divinylbenzene (VBC-DVB) copolymers is an effective method for preparation of ion-exchange resins. Conventionally, the starting polymer is produced by chloromethylation of a styrene-divinylbenzene copolymer that utilizes chloromethyl methyl ether, a known carcinogen.
What are functions of an ion exchange resin in a pharmaceutical formulation?
Ion exchange resins can be used to overcome various pharmaceutical formulation problems including bitter taste, poor stability, deliquescence, and poor dissolution of the drugs. Resins have also been used as superdisintegrants in tablet formulations because of their swelling properties.
What is the structure of resin?
Composition. Most plant resins are composed of terpenes. Specific components are alpha-pinene, beta-pinene, delta-3 carene, and sabinene, the monocyclic terpenes limonene and terpinolene, and smaller amounts of the tricyclic sesquiterpenes, longifolene, caryophyllene, and delta-cadinene.
What is the functional group of cation exchange resin?
Strong acid cation (SAC) exchange resins. SAC resins are composed of a polystyrene matrix with a sulphonate (SO3–) functional group that is either charged with sodium ions (Na2+) for softening applications, or hydrogen ions (H+) for demineralization.
How does a cation ion exchange resin release the drug in the gastrointestinal tract?
Drugs are bound to resin functional groups through weak ionic interactions and released by the exchange of a counter-ion. For example, an anionic resin with a cationic drug molecule attached will first enter the gastrointestinal tract and be exposed to cation in the gastric fluid such as sodium or potassium ions.
What is cation exchange resin used for?
Cation-exchange resins are used to treat hyperkalaemia by accelerating potassium loss through the gut, especially in the context of poor urine output or before dialysis (the most effective means of treating hyperkalaemia).
What is meant by cation exchange resin and anion exchange resin?
Ion exchange resins consists of two main types, i.e., cation exchange resins, that exchange positively charged ions, such as sodium, for calcium, and anion exchange resins, that exchange negatively charged ions, such as chloride, for arsenic.
What is the chemical name and structure of resin?
Epoxy resin
| PubChem CID | 169944 |
|---|---|
| Structure | Find Similar Structures |
| Chemical Safety | Laboratory Chemical Safety Summary (LCSS) Datasheet |
| Molecular Formula | C21H25ClO5 |
| Synonyms | Epoxy resin 55818-57-0 2-(chloromethyl)oxirane;4-[2-(4-hydroxyphenyl)propan-2-yl]phenol;prop-2-enoic acid ED 20 acrylate E 44, acrylate More… |
What is the function of resin in water treatment?
Resins are used to reduce arsenic, nitrates, uranium, perchlorate, and more. This mechanism is very helpful in production of “deionized water”and most cases also demineralized water, where the ions and minerals are completely removed. Water softening, iron reduction, barium and radium removal.
Which compound is used as cation exchange resin?
ion-exchange resins Electron-exchange resins accept or donate electrons to the surrounding solution and are used in oxidation-reduction reactions; examples include polymers prepared from hydroquinone, phenol, and formaldehyde.
What kind of resin is used for cation exchange?
The fixed ions of this cation exchange resin are sulphonates (SO3 —) that are attached to the skeleton. In this picture, the mobile ions are sodium (Na+) cations. Cation exchange resins such as Amberjet 1200 are often delivered in the sodium form.
How are cation exchange resins negatively charged and negatively charged?
Cation exchange resins are cross-linked polymers with negatively charged structural units which exchange calcium (calcium resonium) or sodium (sodium polystyrene sulphonate;
How are cation exchange resins used to treat hyperkalaemia?
Cation-exchange resins are used to treat hyperkalaemia by accelerating potassium loss through the gut, especially in the context of poor urine output or before dialysis (the most effective means of treating hyperkalaemia).
How does ion exchange work in a solution?
For ion exchange to be efficient there must be a difference in affinity between the ion in the resin and the ion or ions you want to remove from solution. The resin must have a higher affinity for the ion in solution compared to the ion in the resin.