A temperature-controlled method to produce Janus nanoparticles using high internal interface systems: Experimental and theoretical approaches

Sharifzadeh, Esmail; Salami‐Kalajahi, Mehdi; Hosseini, Mahdi; Aghjeh, Mir Karim Razavi

doi:10.1016/j.colsurfa.2016.06.006

Cited by 57 publications

(23 citation statements)

References 36 publications

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“…The peak at 3330-3350 cm −1 is ascribed to the N H stretching vibrations. 42,43 The absorption peaks of CH 3 bending and rocking vibrations were observed at 1261 and 801 cm −1 . 40 Sharp peaks at around 2930 and 2850 cm −1 were related to asymmetric and symmetric stretching vibrations of alkyl groups.…”

Section: Resultsmentioning

confidence: 99%

“…A peak at 1577 cm −1 was ascribed to the N H stretching vibrations combined with bending vibrations of C N groups in amide II region. 42,43 The absorption peaks of CH 3 bending and rocking vibrations were observed at 1261 and 801 cm −1 . 44 The sharp peaks at 1022 and 1097 cm −1 related to Si O Si stretching vibrations 44 confirmed the incorporation of PDMS in these polymers.…”

Section: Resultsmentioning

confidence: 99%

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Evaluation of in vitro cytotoxicity and properties of polydimethylsiloxane‐based polyurethane/crystalline nanocellulose bionanocomposites

Khadivi

Salami‐Kalajahi

Roghani‐Mamaqani

2019

J Biomedical Materials Res

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Polydimethylsiloxane‐based polyurethane (PU)/crystalline nanocellulose (CNC) bionanocomposites were produced via in situ prepolymer approach. Also, hexamethylene diisocyanate as aliphatic diisocyanate monomer and 1,4‐butanediol as aliphatic chain extender were used. CNC was incorporated into PU matrix to prepare different PU/CNC bionanocomposites. Effect of CNC content on the properties of the bionanocomposites such as thermal, thermophysical, microstructure, and in vitro cytotoxicity was investigated. According to the results, incorporating CNCs into PU matrix significantly affected the hydrogen bonding between different microstructures of matrix. Adding different amounts of CNCs affected the thermal and thermophysical properties of bionanocomposites. Also, higher amounts of CNCs resulted in lower crystallization of hard segment. Neat PU matrix showed a moderate cytotoxicity behavior against human fibroblast cells. However, incorporating CNCs significantly improved the cytotoxicity behavior of bionanocomposites where by addition of 2 wt % of CNCs, cell viability increased to 90–100%. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 1771–1778, 2019.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Evaluation of in vitro cytotoxicity and properties of polydimethylsiloxane‐based polyurethane/crystalline nanocellulose bionanocomposites

Khadivi

Salami‐Kalajahi

Roghani‐Mamaqani

2019

J Biomedical Materials Res

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“…In the synthesis process of the Janus particles by the Pickering emulsions method, although the original method described by Granick et al [ 39 ] also facilitates the migration of the silica particles towards the oil–water interface by increasing the surfactant concentration, the excess of surfactants reduced the amount of available functional groups (Si–OH) that acted as anchors to the silane coupling agents, thereby significantly decreasing the efficiency of the modification stage [ 40 ]. The wetting response is a common result of the transformation of the functional groups on the particle surface and variations in the surface roughness of modified silica particles.…”

Section: Discussionmentioning

confidence: 99%

Preparation and Investigation of Foaming Amphiphilic Fluorinated Nanoparticles for Enhanced Oil Recovery

Wang

et al. 2017

Materials

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Amphiphilic nanoparticles have attracted increasing interest as Pickering emulsifiers owing to the combined advantages of both traditional surfactants and homogeneous particles. Here, foaming amphiphilic fluorinated nanoparticles were prepared for enhanced oil recovery by the toposelective surface modification method. The structure and properties of amphiphilic nanoparticles were characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, a laser diffraction method, fluorescence microscopy, a pendant drop tensiometer, and foamscan. It was found that the amphiphilic fluorinated nanoparticles exhibited significant interfacial activity at the air–water interface and generated stabilized aqueous foams against coalescence and drainage even in the absence of surfactants. When the particle concentration reached 0.6 wt %, the adsorption of the amphiphilic nanoparticles at the interface was saturated and the equilibrium surface tension dropped to around 32.7 mN/m. When the particle concentration reached 0.4 wt %, the Gibbs stability criterion was fulfilled. The amphiphilic nanoparticles foam system has a better plugging capacity and enhanced oil recovery capacity. The results obtained provide fundamental insights into the understanding of the self-assembly behavior and foam properties of amphiphilic fluorinated nanoparticles and further demonstrate the future potential of the amphiphilic nanoparticles used as colloid surfactants for enhanced oil recovery applications.

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“…This technique was subsequently used by other researchers to design various types of functional Janus NPs. [77][78][79][80][81][82] For example, Okubo et al have reported the formation of "mushroom-like" Janus particles from various polymer systems using this technique. [83][84][85][86] Recently, Muller's group also synthesized hybrid silica Janus NPs with a poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) hemicorona.…”

Section: Synthesis Of Janus Nanoparticlesmentioning

confidence: 99%

Janus nanoparticles inside polymeric materials: interfacial arrangement toward functional hybrid materials

Yang

Loos

2017

Polym. Chem.

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A temperature-controlled method to produce Janus nanoparticles using high internal interface systems: Experimental and theoretical approaches

Cited by 57 publications

References 36 publications

Evaluation of in vitro cytotoxicity and properties of polydimethylsiloxane‐based polyurethane/crystalline nanocellulose bionanocomposites

Evaluation of in vitro cytotoxicity and properties of polydimethylsiloxane‐based polyurethane/crystalline nanocellulose bionanocomposites

Preparation and Investigation of Foaming Amphiphilic Fluorinated Nanoparticles for Enhanced Oil Recovery

Janus nanoparticles inside polymeric materials: interfacial arrangement toward functional hybrid materials

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