CHARACTERIZATION OF MICROCAPSULES PREPARED BY INTERFACIAL POLYCONDENSATION OF METHYLENE BIS(PHENYL ISOCYANATE) WITH HEXAMETHYLENE DIAMINE

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JABARI EBRAHIM

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Iranian Polymer Journal Year:2001 | Volume:10 | Issue:1 Page(s): 33-43

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Information Journal Paper

Title

CHARACTERIZATION OF MICROCAPSULES PREPARED BY INTERFACIAL POLYCONDENSATION OF METHYLENE BIS(PHENYL ISOCYANATE) WITH HEXAMETHYLENE DIAMINE

Author(s)

JABARI EBRAHIM | Issue Writer Certificate

Keywords

MICROENCAPSULATION

INTERFACIAL POLYCONDENSATION

METHYLENE BIS(PHENYL ISOCYANATE)

HEXAMETHYLENE DIAMINE

CHARACTERIZATION

Abstract

Polyurea microcapsules containing 2-chloro-N-(2,6-diethylphenyl)-N-(methoxy methyl)acetamide as the active agent were prepared by the method of INTERFACIAL POLYCONDENSATION with methylene bis(phenyl isocyanate) as the multifunctional isocyanate, HEXAMETHYLENE DIAMINE as the diamine, and anionic sodium lignin sulphonate as the emulsifying agent. Thermal stability of the microcapsules was investigated with a thermogravimetric analyzer coupled to a mass spectrometer and surface topography of the micro-capsules was investigated with atomic force microscopy. The release behaviour of the microcapsules was studied by extraction in deionized water or calcium chloride aqueous solution, drying under ambient conditions, and examining with scanning electron microscopy. Results indicate that as calcium chloride is added to the aqueous suspension of microcapsules containing anionic sodium lignin sulphonate as the surfactant, a gel phase is formed. This gel phase encompasses the microcapsules and increases the stability and modifies the release behaviour of the microcapsules.

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APA: Copy

JABARI, EBRAHIM. (2001). CHARACTERIZATION OF MICROCAPSULES PREPARED BY INTERFACIAL POLYCONDENSATION OF METHYLENE BIS(PHENYL ISOCYANATE) WITH HEXAMETHYLENE DIAMINE . IRANIAN POLYMER JOURNAL (ENGLISH), 10(1), 33-43. SID. https://sid.ir/paper/528745/en

Vancouver: Copy

JABARI EBRAHIM. CHARACTERIZATION OF MICROCAPSULES PREPARED BY INTERFACIAL POLYCONDENSATION OF METHYLENE BIS(PHENYL ISOCYANATE) WITH HEXAMETHYLENE DIAMINE . IRANIAN POLYMER JOURNAL (ENGLISH)[Internet]. 2001;10(1):33-43. Available from: https://sid.ir/paper/528745/en

IEEE: Copy

EBRAHIM JABARI, “CHARACTERIZATION OF MICROCAPSULES PREPARED BY INTERFACIAL POLYCONDENSATION OF METHYLENE BIS(PHENYL ISOCYANATE) WITH HEXAMETHYLENE DIAMINE ,” IRANIAN POLYMER JOURNAL (ENGLISH), vol. 10, no. 1, pp. 33–43, 2001, [Online]. Available: https://sid.ir/paper/528745/en

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