Evaluation of nanoemulsions in the cleaning of polymeric resins

Costa, Josane A.; Lucas, Elizabete F.; Queirós, Yure Gomes de Carvalho; Mansur, Cláudia R. E.

doi:10.1016/j.colsurfa.2012.10.011

Cited by 19 publications

(24 citation statements)

References 25 publications

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“…It is well accepted that transmittance value higher than 90 % is considered as sufficient to be recognised as emulsion with nano-sized for the droplets of oil in water (Costa, et al, 2012). In contrast to the result of emulsification time which implied that formula 14 was the optimum one, based on the clarity the optimum formula was achieved by formula 8 with transmittance value 95.2 %.…”

mentioning

confidence: 87%

“…HLB value of co-surfactant would affect the SNEDDS system to form nanoemusion. Normally, HLB optimum for the system is between 12 and 20 (Costa, et al, 2012).…”

Section: Screening Of Surfactant and Co-surfactant:-mentioning

confidence: 99%

“…System with lowest amount of surfactant that could generate nanoemulsion was chosen as the limit of the design of the formulation. Basically, clear visual appearance with more than 90 % transmittance reflects the small size of the droplets hence can be chosen as the suitable candidates for the best formula (Costa, et al, 2012). Table 4 presented the result that mixture of olive oil, Tween 80 and PEG 400 with ratio 1:7:1 was able to produce nanoemulsion with transmittance higher than 90 % thus it was considered as the base to determine upper and lower limit for the design of the formulation, as seen in Table 5.…”

Section: Screening Of Surfactant and Co-surfactant:-mentioning

confidence: 99%

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SNEDDS (SELF-NANOEMULSIFYING DRUG DELIVERY SYSTEM) FORMULATION OF -CAROTENE IN OLIVE OIL (Olea europaea)

Wulandari¹,

Alverina²,

Martien³

2016

IJAR

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mentioning

confidence: 87%

“…HLB value of co-surfactant would affect the SNEDDS system to form nanoemusion. Normally, HLB optimum for the system is between 12 and 20 (Costa, et al, 2012).…”

Section: Screening Of Surfactant and Co-surfactant:-mentioning

confidence: 99%

Section: Screening Of Surfactant and Co-surfactant:-mentioning

confidence: 99%

See 1 more Smart Citation

SNEDDS (SELF-NANOEMULSIFYING DRUG DELIVERY SYSTEM) FORMULATION OF -CAROTENE IN OLIVE OIL (Olea europaea)

Wulandari¹,

Alverina²,

Martien³

2016

IJAR

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“…In a previous study, stable O/W nanoemulsions with average droplet diameters of 7–20 nm were obtained by the high‐energy technique in a high‐pressure homogenizer (HPH), using only 10–12%m of the surfactant Utrol L70 (an ethoxylated laurel alcohol) and 5–10%m of the oil phase in a base of 78–85%m of water. The oil phase of this nanoemulsion is a commercial solvent of the Solbrax ECO line, which is obtained by hydrorefining naphtha and has low toxicity because it contains below 1% aromatics .…”

Section: Introductionmentioning

confidence: 99%

Regeneration of spent polymer resins in oily water treatment systems by application of nanoemulsion

Costa

Queirós

Mansur

2015

J of Applied Polymer Sci

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In step production of oil wells, along with oil, also produces a large volume of water oily, which must be properly treated for disposal. Several absorbent materials have been developed and are highly effective for this purpose. However, they need regeneration when they reach saturation, because their discharge after each saturation cycle makes the process unfeasible from the cost and environmental standpoints. In this study, we investigated the efficiency of regenerating a methyl methacrylate-divinylbenzene polymer resin spent in a system for continuous treatment of oily wastewater, in loco. The regeneration fluid used was an O/W nanoemulsion, which contain only 8% of environmentally friendly solvent and 80% of synthetic marine water. A kinetics desorption study of oil saturated resin was performed to identify the best times for desorption using the nanoemulsion. After one cycle of saturation, cleaning and resaturation, was observed that regeneration efficiency in continuous process of around 40%.

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“…22 Based on data from transmittance and reflectance contour plot, the equation pH SNEDDS pH testing aims to determine the safety SNEDDS especially when it is used on the skin. The pH value is too low to cause irritation while the ph is too high resulting in the scaly skin.…”

Section: Transmittancementioning

confidence: 99%

Self-nanoemulsifying Drug Delivery System (Snedds) for Topical Delivery of Mangosteen Peels (Garcinia Mangostana L.,): Formulation Design and In vitro Studies

Pratiwi¹,

Fudholi²,

Martien³

et al. 2017

JYP

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Objective: Purpose of this research was to get the optimum formulation of Self-Nanoemulsifying Drug Delivery System (SNEDDS) of mangosteen peels and to evaluate the permeation ability of active substances in the formulation. Method: Oil phase solubility of ethanol extract, ethyl acetate extract, ethyl acetate fraction, n-hexane fraction and residue of the mangosteen peels was tested with virgin coconut oil (VCO). The formulation was designed with a simplex lattice design using Design Expert software and the permeation was tested using Franz diffusion cell. Results: Based on the results of simplex lattice design methods obtained that the optimum formulation of SNEDDS was the composition of VCO, Tween 80, PEG 400 at a ratio of 1:6,95:2,05. The results of permeation test in vitro using Franz Diffusion cell indicated that the obtained SNEDDS ethyl acetate fraction of mangosteen peels that is 96.9223% higher than without preparation SNEDDS was 18,9426 % on hour-8. The optimum physical evaluation SNEDDS optimum values obtained involved drug loading of 125mg/5 mL SNEDDS, the transmittance value of 92%, emulsification time of 65 seconds, pH of 6.35, particle size 20 nm, zeta potential -12,40 and stable for three months. Conclusion: SNEDDS can improve the diffusion rate of mangosteen peels as a model poorly water soluble drug.Various samples of mangosteen peels were screened as candidates for SNEDDS on the basis of solubility of the active compound in oils, surfactants, and co-surfactants. Simplex lattice design methods can be used to obtain optimum formulation on SNEDDS.Key words: SNEDDS, Extract, Fraction, Mangosteen Peels, Simplex Lattice Design.Key message: Novelty in this research is the utilization of waste mangosteen peels in ethanol extract, ethyl acetate extract, ethyl acetate fraction, n-hexane fraction and residue designed SNEDDS. SNEDDS designed with the simplex lattice design route topical are something new. Additionally, it appeared that diffusion for in vitro release from these SNEDDS. This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.

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Evaluation of nanoemulsions in the cleaning of polymeric resins

Cited by 19 publications

References 25 publications

SNEDDS (SELF-NANOEMULSIFYING DRUG DELIVERY SYSTEM) FORMULATION OF -CAROTENE IN OLIVE OIL (Olea europaea)

SNEDDS (SELF-NANOEMULSIFYING DRUG DELIVERY SYSTEM) FORMULATION OF -CAROTENE IN OLIVE OIL (Olea europaea)

Regeneration of spent polymer resins in oily water treatment systems by application of nanoemulsion

Self-nanoemulsifying Drug Delivery System (Snedds) for Topical Delivery of Mangosteen Peels (Garcinia Mangostana L.,): Formulation Design and In vitro Studies

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