High internal phase emulsion (HIPE) organogels prepared from charge-driven assembled polymer organogels

Zhang, Tao; Guo, Qipeng

doi:10.1039/c3cc47263a

Cited by 19 publications

(23 citation statements)

References 27 publications

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“…High‐internal‐phase emulsions (HIPEs) are typical biphasic systems in which the total fraction of the continuous/internal phase exceeds 74 % by volume . Based on the polymerizable continuous phase, or high viscosity of the internal phase, HIPEs are commonly used as specific media or templates to fabricate gel materials . However, most of these gel materials do not demonstrate synergistic effects between heterophases; thereby, limiting the performance and applications of such materials.…”

Section: Figurementioning

confidence: 99%

Biphasic Synergistic Gel Materials with Switchable Mechanics and Self‐Healing Capacity

et al. 2017

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A fabrication strategy for biphasic gels is reported, which incorporates high‐internal‐phase emulsions. Closely packed micro‐inclusions within the elastic hydrogel matrix greatly improve the mechanical properties of the materials. The materials exhibit excellent switchable mechanics and shape‐memory performance because of the switchable micro‐ inclusions that are incorporated into the hydrogel matrix. The produced materials demonstrated a self‐healing capacity that originates from the noncovalent effect of the biphasic heteronetwork. The aforementioned characteristics suggest that the biphasic gels may serve as ideal composite gel materials with validity in a variety of applications, such as soft actuators, flexible devices, and biological materials.

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Section: Figurementioning

confidence: 99%

Biphasic Synergistic Gel Materials with Switchable Mechanics and Self‐Healing Capacity

et al. 2017

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“…Ionic interactions, widely existing as salt bridges in biomacromolecules to stabilize some specific three-dimensional structures [ 13 ], have attracted considerable attention recently in the preparation of polymer gels [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. Ionic aggregates are required to form strong cross-linkers in water [ 28 ], while a single ionic bond is strong enough to stabilize three-dimensional networks without solvents [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Thermoreversible Polymer Gels in DMF Formed from Charge- and Crystallization-Induced Assembly

2020

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Polymer organogels formed through dynamic interactions are interesting for various applications. The fabrication of polymer organogels in polar solvents through ionic interaction is rare, although such organogels in non-polar organic solvents have been well studied. Herein, polymer organogels in a polar solvent N,N-dimethyl formamide (DMF) were fabricated from a triblock copolymer, poly(4-vinyl pyridine)-block-poly(ethylene glycol)-block-poly(4-vinyl pyridine) (4VPm-EGn-4VPm), and a fluorinated surfactant, perfluorooctanoic acid (PFOA), and their microphase separation and properties were studied. Ordered microphase separation and the crystalline structures were revealed by small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS), respectively. All the 4VPm-EGn-4VPm/PFOA organogels are sensitive to temperature, and the ratio of PFOA to pyridine groups reversibly. The polymer organogels are also responsive to triethylamine and triethylammonium acetate.

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“…Recently, we developed a novel type of emulsiontemplated porous polymers (HIPE xerogels) from polymer organogel-stabilized HIPEs [17]. The polymer organogels were formed from a triblock ionomer, sulfonated polystyreneblock-poly(ethylene-ran-butylene)-block-polystyrene (SSEBS) and oppositely-charged components through ionic interaction-induced assembly [18]. These obtained HIPE xerogels showed excellent properties for oil-water separation, but they were fragile as indicated by the loss of the emulsiontemplated structures and monolithic structure.…”

Section: Introductionmentioning

confidence: 99%

Emulsion-templated, polymerization-free, ultralight sponges for oil spills reclamation

Zhang¹,

Wu²,

Hu³

et al. 2019

Desalination and Water Treatment

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a b s t r a c tWe report the fabrication of monolithic, macroporous, hydrophobic polymer sponges from a water-in-oil (w/o) high internal phase emulsion (HIPE) without using polymerization process. They were formed from sulfonated polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene (SSEBS) and tetra-functional poly(amidoamine) (PAMAM) dendrimers via ionic interaction within a W/O HIPE. The sponges obtained possessed typical emulsion-templated interconnected macroporous structures, with void size ranging from 1 to 20 μm and a density of 0.08-0.1 g mL -1 . The sponges were hydrophobic, with a water contact angle of around 128.1°, enabling highly selective absorption of oil from oil-water mixture with an absorption capacity from 15.4 to 25.8 g g -1 for organic solvents and oils. The sponges were recyclable and their absorption capacity was preserved at around 85% after being reused for 30 times. The high selectivity, absorption capacity and reusability enabled these sponges to be an excellent candidate in the reclamation of oils from wastewater and oil leakage.

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High internal phase emulsion (HIPE) organogels prepared from charge-driven assembled polymer organogels

Cited by 19 publications

References 27 publications

Biphasic Synergistic Gel Materials with Switchable Mechanics and Self‐Healing Capacity

Biphasic Synergistic Gel Materials with Switchable Mechanics and Self‐Healing Capacity

Thermoreversible Polymer Gels in DMF Formed from Charge- and Crystallization-Induced Assembly

Emulsion-templated, polymerization-free, ultralight sponges for oil spills reclamation

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