Phase Behaviour of Nonionic Surfactants in New Palm Oil Esters-Based Emulsion for Glyphosate Isopropylamine Formulation
C.J. Lim
Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
M. Basri
Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia; Laboratory of Industrial Biotechnology, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
D. Omar
Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
M.B. Abdul Rahman
Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia; Laboratory of Industrial Biotechnology, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
A.B. Salleh
Laboratory of Industrial Biotechnology, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia ; Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
R.N.Z.R.A. Rahman
Laboratory of Industrial Biotechnology, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia ; Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
Corresponding Author(s) : M. Basri
mahiran@science.upm.edu.my; jj_lim84@yahoo.com.my
Asian Journal of Chemistry,
Vol. 24 No. 10 (2012): Vol 24 Issue 10
Phase behaviour of emulsion system palm oil esters/nonionic surfactant (s)/water with 41 % (w/w) pesticide active, glyphosate isopropylamine was studied via construction of pseudoternary phase diagrams. The nonionic surfactants were long-chain alkylpolyglucosides (LAPG), medium-chain alkylpolyglucosides (MAPG) and polyoxyethylene (4) lauryl ether (Brij 30). Phase behaviour study showed that no monophase region was found with LAPG, MAPG and Brij 30 alone. Isotropic region, a transparent monophase was successfully obtained with mixed surfactants LAPG:Brij 30 and MAPG:Brij 30 at ratios 9:1, 8:2, 7:3 and 9:1, 8:2, 7:3, 6:4, respectively. Hydrophilic-lipophilic balance (HLB) values of the mixed surfactants calculated for the largest isotropic regions were 11.62 and 11.87, respectively. This preliminary study of phase behaviour determination is important for the selection of composition in the stable pesticide formulations.
Lim, C., Basri, M., Omar, D., Abdul Rahman, M., Salleh, A., & Rahman, R. (2012). Phase Behaviour of Nonionic Surfactants in New Palm Oil Esters-Based Emulsion for Glyphosate Isopropylamine Formulation. Asian Journal of Chemistry, 24(10), 4601–4605. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/9718
