Palm olein-in-water Pickering emulsion stabilized by Fe3O4-cellulose nanocrystal nanocomposites and their responses to pH

Low, Liang Ee; Tey, Beng Ti; Ong, Boon Hoong; Chan, Eng Seng; Tang, Siah Ying

doi:10.1016/j.carbpol.2016.08.091

Cited by 104 publications

(41 citation statements)

References 25 publications

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“…The motion of MCNC‐stabilized Pickering emulsion under external magnetic field was evaluated based on a method that was performed elsewhere with slight modification . Briefly, 50 μl of the Pickering emulsions was dropped in a petri dish.…”

Section: Methodsmentioning

confidence: 99%

A facile and rapid sonochemical synthesis of monodispersed Fe₃O₄@cellulose nanocrystal nanocomposites without inert gas protection

Low

Tey

Ong

et al. 2018

Asia-Pacific J Chem Eng

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Here, we proposed a rapid sonochemical in situ co-precipitation approach to prepare Fe 3 O 4 @cellulose nanocrystal (MCNC) nanocomposites. Differed from conventionaly method, the proposed in-situ co-precipitation reaction was performed under atmospheric condition without N 2 purging to yield the MCNC.The results from FTIR analysis confirmed the formation of MCNC through the chemical interaction between the Fe ions of Fe 3 O 4 nanoparticles (MNP) with the surface hydroxyl groups of CNC. The absence of typical Fe 2 O 3 Raman spectral peak (730 cm −1 ) indicated no occurrence of oxidation of MNP to undesired maghemite. Based on TGA results, the MNP loading on the MCNC composites was found to be 6 wt% higher than those produced under typical N 2 protection, giving rise to a higher magnetivity. Results revealed that the use of ultrasound (US) horn in place of conventional mechanical stirrer led to the production of the radical species that accelerated the nucleation, growth and dispersibility of MNPs on CNC fibres, which thus shortened the reaction times to 5 min.The findings suggest that the proposed sonochemical synthesis without inert N 2 purging could be an alternative facile and efficient approach to fabricate well-dispersed MCNC nanocomposites that hold great potential for biomedical applications. KEYWORDS facile synthesis, Fe 3 O 4 @cellulose nanocrystals, no inert purging, open atmosphere, sonochemical

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Section: Methodsmentioning

confidence: 99%

A facile and rapid sonochemical synthesis of monodispersed Fe₃O₄@cellulose nanocrystal nanocomposites without inert gas protection

Low

Tey

Ong

et al. 2018

Asia-Pacific J Chem Eng

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“…[99,100] Though promising, only a handful are directly applicable to or have been demonstrated for biomedical applications. [53,101] A range of stimulus combinations have been investigated, such as CO2 and light, [99] pH and light, [100] CO2 and redox environments, [102] temperature and ionic strength, [103] pH and temperature, [104][105][106] pH and magnetic fields, [101,[107][108][109] and magnetic fields and temperature. [23,110] Many systems employ emulsifiers composed of a single amphiphilic polymer with multi-functionality or co-polymer systems bearing different stimuli-sensitive groups (often based on poly(N-isopropylacrylamide) or poly(methyl methacrylate) species), either as a polymeric emulsifier or via modification of an inorganic particle.…”

Section: Multi-stimuli Responsive Pickering Emulsionsmentioning

confidence: 99%

“…pH), with the magnetic component additionally facilitating directional motion. [23,107,108] The group of Meng and co-workers have exploited a magnetic field to trigger emulsion coalescence and a chemical reaction only in the presence of UV light in a truly multiresponsive manner (Figure 3b). [109] Pickering emulsions formed using a dual-emulsifier system of magnetic and titania particles aggregated near to an applied magnetic field.…”

Section: Multi-stimuli Responsive Pickering Emulsionsmentioning

confidence: 99%

Recent developments in Pickering emulsions for biomedical applications

Harman

Patel

Guldin

et al. 2019

Current Opinion in Colloid & Interface Science

141

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Pickering emulsions, stabilised by organic or inorganic particles, offer long-term dispersibility of liquid droplets and resistance to coalescence. The versatility of stabilising particles and their ability to encapsulate and release cargo with high internal payload capacity makes them attractive in a wide variety of applications, ranging from catalysis to the cosmetic and food industry. While these properties make them an equally promising material platform for pharmaceutical and clinical applications, the development of Pickering emulsions for healthcare is still in its infancy. Herein, we summarise and discuss recent progress in the development of Pickering emulsions for biomedical applications, probing their design for passive diffusion-based release as well as stimuli-responsive destabilisation. We further comment on challenges and future directions of this exciting and rapidly expanding area of research.Pickering emulsions have been applied in a number of areas of research and industrial importance, such as food manufacturing, cosmetics, agrochemicals and therapeutic delivery. Their popularity in biomedical applications (i.e. for use in healthcare, such as therapeutics, diagnostics or imaging), in particular, has increased dramatically in recent years, thanks to their high stability, capacity for superior cargo loading compared to conventional systems, and diverse range of stabilising particles, creating a broad library of available building blocks. For biomedical and pharmaceutical application, the choice of emulsifier is critical; it must be biocompatible, non-toxic, and be able to be excreted from the body (if necessary). In this article, we will review the latest developments in the design and application of Pickering emulsions for biomedicine, with a focus on stimuli-responsive Pickering emulsions as a route to the triggered release of a payload towards advanced therapeutic delivery strategies. Within this discussion, we will describe systems which have been applied in proof of concept and in vitro assessments and emphasise areas of potential future development.

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“…This effect is probably caused by the decrease in adsorptiono fG An anofibers at the interface promoted by electrostatic repulsion. [41] GA-based gel-likeP ickering emulsion as drug matrix…”

Section: Storage Stability and Ph Resistance Of Ga-based Gel-like Picmentioning

confidence: 99%

A Natural Triterpene Saponin‐Based Pickering Emulsion

Gao

Zhao

et al. 2018

Chemistry A European J

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The abuse of chemical surfactants in pesticide formulations is a potential threat to agricultural development and environmental safety. Thereby, developing an efficient eco-friendly pesticide formulation is of great significance. In this research, a biocompatible and ultrastable pesticide formulation has been developed in which merely 1 wt % natural glycyrrhizic acid (GA) was used to emulsify and stabilize 80 wt % agricultural oils. During the preparation process, amphiphilic GA molecules initially self-assembled into 1D nanofibers with a favorable surfactivity, and then afforded GA-based Pickering emulsions with fine droplets. Consequently, the Pickering emulsions transformed into gel-like Pickering emulsions as a result of the formation of a 3D network of nanofibers. On account of the unique chemical structure and admirable assembly behavior of GA, the gel-like Pickering emulsions exhibit ultrastability, thixotropy, and broad pH resistance. In addition, this formulation was investigated for its potential application to pesticides by using pure carbosulfan as the oil phase; up to 60 wt % carbosulfan could be coated, which is more than in the current commercial formulations. This work not only provides new insights into the application of natural biosurfactants to pesticides, but also proposes a biocompatible and eco-friendly pesticide formulation for use in ecological agriculture.

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Palm olein-in-water Pickering emulsion stabilized by Fe3O4-cellulose nanocrystal nanocomposites and their responses to pH

Cited by 104 publications

References 25 publications

A facile and rapid sonochemical synthesis of monodispersed Fe₃O₄@cellulose nanocrystal nanocomposites without inert gas protection

A facile and rapid sonochemical synthesis of monodispersed Fe₃O₄@cellulose nanocrystal nanocomposites without inert gas protection

Recent developments in Pickering emulsions for biomedical applications

A Natural Triterpene Saponin‐Based Pickering Emulsion

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Palm olein-in-water Pickering emulsion stabilized by Fe3O4-cellulose nanocrystal nanocomposites and their responses to pH

Cited by 104 publications

References 25 publications

A facile and rapid sonochemical synthesis of monodispersed Fe3O4@cellulose nanocrystal nanocomposites without inert gas protection

A facile and rapid sonochemical synthesis of monodispersed Fe3O4@cellulose nanocrystal nanocomposites without inert gas protection

Recent developments in Pickering emulsions for biomedical applications

A Natural Triterpene Saponin‐Based Pickering Emulsion

Contact Info

Product

Resources

About

A facile and rapid sonochemical synthesis of monodispersed Fe₃O₄@cellulose nanocrystal nanocomposites without inert gas protection

A facile and rapid sonochemical synthesis of monodispersed Fe₃O₄@cellulose nanocrystal nanocomposites without inert gas protection