Hierarchical Porous Polystyrene Monoliths from PolyHIPE

Yang, Xinjia; Tan, Liangxiao; Xia, Lingling; Wood, Colin D.; Tan, Bien

doi:10.1002/marc.201500235

Cited by 61 publications

(58 citation statements)

References 42 publications

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“…Compared to the precursor PC, the postcrosslinking sample HCRP and HCFC display surface area enhancement of 5.6‐ and 9.0‐fold based on mercury intrusion porosimetry, and 30.3‐ and 731‐fold based on nitrogen adsorption. The HCFC sample achieved 1462 m 2 g −1 of BET surface area, which is the highest value in supermacroporous materials related reports to date . A relatively high temperature and pressure in the solvothermal instrument is in favor of accelerating postcrosslinking reaction, which should account for the improvement on the surface area of the samples.…”

Section: Resultssupporting

confidence: 67%

“…Only 4.8% of the double bonds was consumed in the postcrosslinking by radical polymerization, while 90.4% of the double bonds was involved in postcrosslinking by Friedel–Crafts reaction. Friedel–Crafts reaction shows much higher reactivity compared with radical polymerization, which is similar to the phenomenon observed in postcrosslinking reaction of polyHIPEs . The residual double bonds should be difficult to find other adjacent vinyl groups, which are fixed and scattered on the rigid PDVB backbone .…”

Section: Resultsmentioning

confidence: 70%

“…The sample HCFC exhibits 2.63‐ and 4.38‐fold increase for CO 2 adsorption at 1.0 and 25 bar, respectively, compared to the precursor sample PC. The sample HCFC achieved CO 2 uptake of 7.9 wt % (1.8 mmol g −1 ) at 1.0 bar and 62.2 wt % (14.1 mmol g −1 ) at 25 bar, respectively, which are comparable with other similar structure materials reported as CO 2 adsorbent (Table ) . Considering cost of the raw materials and easy of preparation, the sample HCFC should be a potential alternative as gas storage material.…”

Section: Resultsmentioning

confidence: 88%

See 2 more Smart Citations

Supermacroporous polydivinylbenzene cryogels with high surface area: Synthesis by solvothermal postcrosslinking and their adsorption behaviors for carbon dioxide and aniline

Guo

Wang

Chen

et al. 2019

J of Applied Polymer Sci

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Cryogels are supermacroporous but restricted by lack of surface area in utilization to date. We here propose a method for fabrication of supermacroporous polydivinylbenzene (PDVB) cryogels with high surface area by redox‐initiated cryopolymerization combined with solvothermal postcrosslinking technique. The PDVB precursor cryogels are prepared by redox‐initiated cryopolymerization, followed by postcrosslinking of residual double bonds to form hypercrosslinked cryogels under solvothermal conditions. The hypercrosslinked cryogels maintain the original supermacroporosity and display very high surface area up to 1462 m2 g−1. We demonstrate the utilization of the resultant cryogel in uptake of carbon dioxide (7.9 wt % at 1 bar and 62.2 wt % at 25 bar, respectively) and uptake of aniline (333.3 mg g−1 at room temperature) from aqueous solutions. The adsorption behaviors of aniline on the hypercrosslinked cryogels are found to follow Langmuir model as well as Freundlich model in equilibrium adsorption and to follow pseudo‐second‐order model in kinetic adsorption, respectively. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47716.

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Section: Resultssupporting

confidence: 67%

Section: Resultsmentioning

confidence: 70%

Section: Resultsmentioning

confidence: 88%

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Supermacroporous polydivinylbenzene cryogels with high surface area: Synthesis by solvothermal postcrosslinking and their adsorption behaviors for carbon dioxide and aniline

Guo

Wang

Chen

et al. 2019

J of Applied Polymer Sci

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“…46,47 The macroporous polyHIPEs can be crosslinked to produce hierarchical porous polymer networks which have high adsorption capacities for common organic solvents, 48 and can act as catalytic supports. 49 In contrast to the synthesis of polyHIPEs, the "knitting" approach forms HCPs in a single step without using surfactants or inorganic silica particles, which in some cases can hinder post modification of the polyHIPEs.…”

Section: Introductionmentioning

confidence: 99%

Swellable functional hypercrosslinked polymer networks for the uptake of chemical warfare agents

et al. 2017

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The need for porous materials to function as sorbents in order to allow for bulk uptake (and potential deactivation) of chemical warfare agent (CWA) stockpiles is of significant importance in the world today.Hypercrosslinked polymers (HCPs) represent a class of such sorbents being produced using the facile and tuneable so-called "knitting" procedure. Several HCPs are reported and their properties including apparent Brunauer-Emmett-Teller surface areas (SA BET ) and swellability (Q) against CWA simulants are examined using two reliable swelling methods which we have developed. The HCP derived from fluorobenzene showed the greatest potential for using such materials for CWA uptake and was tested against real agents including isopropyl methylphosphonofluoridate (sarin, GB) and bis(2-chloroethyl)sulfane (sulfur mustard, HD) revealing uptakes close to 20 mL g −1.

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“…The absorption capacities of the sponges were shown in Fig. 9, and they vary from 15 to 26 g g -1 which is higher than other reported HIPE xerogels [29][30][31]. For example, Lee et al [30] fabricated 12-Hydroxystearic acid xerogels with lower absorption capacity which increased in weight by 459 ± 33 wt% in diesel and 583 ± 42 wt% in gasoline.…”

Section: Molar Ratiomentioning

confidence: 87%

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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Hierarchical Porous Polystyrene Monoliths from PolyHIPE

Cited by 61 publications

References 42 publications

Supermacroporous polydivinylbenzene cryogels with high surface area: Synthesis by solvothermal postcrosslinking and their adsorption behaviors for carbon dioxide and aniline

Supermacroporous polydivinylbenzene cryogels with high surface area: Synthesis by solvothermal postcrosslinking and their adsorption behaviors for carbon dioxide and aniline

Swellable functional hypercrosslinked polymer networks for the uptake of chemical warfare agents

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

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