Skip to Main content Skip to Navigation
Journal articles

Formulation of a water-in-oil emulsion encapsulating polysaccharides to improve the efficiency of spraying of plant protection products

Abstract : W/O emulsions were formulated with a vegetable oil and a water phase containing a polysaccharide and glycerol in order to reduce the loss of a phytosanitory product during its spraying on plants and therefore the amount used. Different kinds of polysaccharides were tested (CMC, guar and xanthan) and two kinds of surfactants were used (lecithin and PGPR). The stability of the emulsions was determined by different techniques bottle test, optical microscopy, laser granulometry and differential scanning calorimetry - whose principle is based on the correlation between the freezing temperature of the droplets and their radius. From the experiments performed by varying different parameters, a formulation of a suitable emulsion was developped 3% of CMC in the water phase, 50-70% V/V of water, 10-12% of PGPR. The release within a few minutes of the required amount of CMC in water checked by conductivity was obtained by adding another surfactant commercially named Cynthiorex.
Document type :
Journal articles
Complete list of metadatas

https://hal.utc.fr/hal-02192526
Contributor : Isabelle Pezron <>
Submitted on : Tuesday, July 23, 2019 - 8:53:20 PM
Last modification on : Thursday, February 6, 2020 - 3:46:08 PM

Identifiers

Collections

Citation

Danièle Clausse, Jean Louis Lanoiselle, Isabelle Pezron, Khashayar Saleh. Formulation of a water-in-oil emulsion encapsulating polysaccharides to improve the efficiency of spraying of plant protection products. Colloids and Surfaces A: Physicochemical and Engineering Aspects, Elsevier, 2018, 536, pp.96-103. ⟨10.1016/j.colsurfa.2017.07.032⟩. ⟨hal-02192526⟩

Share

Metrics