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Design and application of polyurea microcapsules containing herbicide (oxyfluorfen)
Design and application of polyurea microcapsules containing herbicide (oxyfluorfen)
- Source :
- Designed Monomers and Polymers, article-version (VoR) Version of Record, Designed Monomers and Polymers, Vol 23, Iss 1, Pp 155-163 (2020)
- Publication Year :
- 2020
- Publisher :
- Taylor & Francis, 2020.
-
Abstract
- Polyurea, a controlled release material, has been widely applied in agricultural fields due to high thermal stability and low cost. In this article oxyfluorfen polyurea microcapsules suspension was successfully prepared by interfacial polymerization using diisocyanate and polyamines such as Ethylenediamine, Hexamethylenediamine, Diethylenetriamine in presence of green solvent, i.e., N,N-dimethyldecanamide. The microcapsule suspension of oxyfluorfen has not been researched yet by using solvent N,N-dimethyldecanamide and polyamines. The effect and the type of diamines on the morphology and properties of the microcapsules have been investigated. The synthesized microcapsules were characterized by scanning electron microscope, ultraviolet spectrometry, Fourier transform iInfrared spectrometer, thermogravimetric analysis and particle size analyser. The effect of the core to shell ratio on encapsulation efficiency and release kinetics were also studied. The oxyfluorfen microcapsules had an excellent encapsulation efficiency (98.2%) using EDA as the monomer and Release kinetics depended upon the type of monomers used and also on core to shell ratio used (6.5:1, 5:1, 4:1). As core to shell ratio was increased the encapsulation efficiency was found to decrease. Prepared Microcapsules when sprayed on paddy crop was found to be safe in comparison with Emulsifiable concentrate sample.
- Subjects :
- Thermogravimetric analysis
Materials science
Polymers and Plastics
General Chemical Engineering
core to shell ratio
02 engineering and technology
010402 general chemistry
01 natural sciences
chemistry.chemical_compound
Materials Chemistry
Thermal stability
Polyurea
encapsulation efficiency
General Chemistry
Articles
021001 nanoscience & nanotechnology
Controlled release
Interfacial polymerization
lcsh:TP1080-1185
0104 chemical sciences
Solvent
microcapsules
Monomer
lcsh:Polymers and polymer manufacture
chemistry
Chemical engineering
interfacial polymerization
Hexamethylenediamine
0210 nano-technology
Research Article
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Designed Monomers and Polymers, article-version (VoR) Version of Record, Designed Monomers and Polymers, Vol 23, Iss 1, Pp 155-163 (2020)
- Accession number :
- edsair.doi.dedup.....11f3aeb9f8bd9c812a384f27659bd72a
- Full Text :
- https://doi.org/10.6084/m9.figshare.12927696