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INTERFACIAL POLYMERIZATION METHOD [1 record]
Record 1 - internal organization data 2003-01-16
Record 1, English
Record 1, Subject field(s)
- Biological Sciences
Record 1, Main entry term, English
- interfacial polymerization method
1, record 1, English, interfacial%20polymerization%20method
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
Method of production of microencapsulated enzymes based on a chemical reaction to synthesize a water-insoluble polymer at the interface of a microdroplet. The two monomers must have differing solubilities such that one is partially soluble in both the aqueous and organic phases (that is, a hydrophilic monomer) whilst the other must be soluble only in the organic phase (that is, a hydrophobic monomer. A solution of the hydrophilic monomer and enzyme is emulsified in an organic solvent, and to this emulsion is added a solution of hydrophobic monomer in the same organic solvent. By polymerization reactions of the condensation or addition type, a membrane is formed at the interface between the organic and aqueous phases. 2, record 1, English, - interfacial%20polymerization%20method
Record number: 1, Textual support number: 1 OBS
The major disadvantage of this procedure is that the hydrophilic monomer can cause deactivation of the enzyme before polymerization occurs. 2, record 1, English, - interfacial%20polymerization%20method
Record 1, French
Record 1, Domaine(s)
- Sciences biologiques
Record 1, Main entry term, French
- méthode par polymérisation interfaciale
1, record 1, French, m%C3%A9thode%20par%20polym%C3%A9risation%20interfaciale
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Plusieurs procédés de microencapsulation des enzymes ont été décrits. Dans la méthode par polymérisation interfaciale, une solution aqueuse renfermant l'enzyme et un monomère hydrophile (polyamine ou glycol) est émulsionnée dans un solvant organique non miscible à l'eau. Par addition d'un second monomère hydrophobe (chlorure d'acide polybasique) on provoque une réaction de polymérisation entraînant la formation d'une membrane (polyamide ou polyester) autour des microgouttelettes aqueuses. Il est souvent nécessaire d'ajouter un agent tensioactif qui stabilise l'émulsion et permet d'ajuster la taille des capsules aux dimensions désirées, celles-ci pouvant varier de 1 à 100 microns. 1, record 1, French, - m%C3%A9thode%20par%20polym%C3%A9risation%20interfaciale
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Ciencias biológicas
Record 1, Main entry term, Spanish
- método de polimerización en la interfase
1, record 1, Spanish, m%C3%A9todo%20de%20polimerizaci%C3%B3n%20en%20la%20interfase
masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
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