Sustained release insect repellent microcapsules using modified cellulose nanofibers (mCNF) as pickering emulsifier
| Autor: | Siddhant Bhutkar, Kadhiravan Shanmuganathan, Vishal D. Patil, Prashant Yadav, Sandip L. Kadam, Parshuram G. Shukla |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Interfacial polycondensation
02 engineering and technology Modified cellulose 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Pickering emulsion 0104 chemical sciences DEET chemistry.chemical_compound Colloid and Surface Chemistry Reaction rate constant Chemical engineering chemistry Nanofiber Stearic acid 0210 nano-technology Insect repellent |
| Zdroj: | Colloids and Surfaces A: Physicochemical and Engineering Aspects. 582:123883 |
| ISSN: | 0927-7757 |
| DOI: | 10.1016/j.colsurfa.2019.123883 |
| Popis: | We report here an approach to encapsulate N, N-diethyl-3-methylbenzamide (DEET), an insect repellent, through interfacial polycondensation using modified cellulose nanofiber (CNF) as pickering emulsifier. We found that stearic acid functionalized CNF (mCNF) can be used to form stable pickering emulsions (oil-in-oil and water-in-oil), and further encapsulate DEET using interfacial polycondensation with very high encapsulation efficiency of about 98%. Another major advantage of this approach is that mCNF can act both as pickering emulsifier and also strengthen the barrier properties of microcapsules resulting in significant reduction in release rate of DEET. Interpretation of the release profiles using standard mathematical models proposed by Ritger-Peppas show a factor of three reduction in release rate constant for the microcapsules reinforced with mCNF. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect