Interconnected porous epoxy monoliths prepared by concentrated emulsion templating

Wang, JianLi; Du, Zhongjie; Li, Hangquan; Xiang, Aimin; Zhang, Chen

doi:10.1016/j.jcis.2009.06.013

Cited by 14 publications

(10 citation statements)

References 26 publications

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“…4(a), and the pores in the foam could be identified as primary and secondary pores [20]. It could be found that the obtained PTBA foam possessed a high porosity with a complex network of channels and interconnected pores.…”

Section: Preparation Of Pei-paa Foammentioning

confidence: 97%

Fabrication of copper coated polymer foam and their application for hexavalent chromium removal

Zou

et al. 2015

Reactive and Functional Polymers

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Section: Preparation Of Pei-paa Foammentioning

confidence: 97%

Fabrication of copper coated polymer foam and their application for hexavalent chromium removal

Zou

et al. 2015

Reactive and Functional Polymers

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“…A more straightforward method for the preparation of templated organic polymer monoliths using silica nanoparticles as the template is by emulsion templating . In this technique, the concentrated emulsion of monomers is prepared in the presence of curing agent, surfactant, and porogenic solvent.…”

Section: Strategies In Large‐volume Monolith Preparationmentioning

confidence: 99%

Challenges and strategies in the preparation of large-volume polymer-based monolithic chromatography adsorbents

2014

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To date, the number of published reports on the large-volume preparation of polymer-based monolithic chromatography adsorbents is still lacking and is of great importance. Many critical factors need to be considered when manufacturing a large-volume polymer-based monolith for chromatographic applications. Structural integrity, validity, and repeatability are thought to be the key factors determining the usability of a large-volume monolith in a separation process. In this review, we focus on problems and solutions pertaining to heat dissipation, pore size distribution, "wall channel" effect, and mechanical strength in monolith preparation. A template-based method comprising sacrificial and nonsacrificial techniques is possibly the method of choice due to its precise control over the porous structure. However, additional expensive steps are usually required for the template removal. Other strategies in monolith preparation are also discussed.

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“…Wang et al (2009) recently reported the synthesis of a monolithic epoxy resin with high porosity as well as 3D interconnected macropores using a concentrated emulsion as a template of the macropores. In the similar manner, with the aim of synthesizing a MCF with 3D interconnected macropores, we have examined the condition to prepare a concentrated emulsion of cyclohexane with the RF solution.…”

Section: Effect Of Mass Ratio Of Cyclohexane With Rf Solutionmentioning

confidence: 99%

“…This suggests that the size of the macropores can be changed independently from that of the mesopores or micropores. Since the MCF possesses not only macropores but also numerous mesopores as well as micropores, as summarized in Table 1, the porosity of the MCF was found to be much larger than that (less than 60%) of the monolithic epoxy resin (Wang et al 2009). Figure 5 shows the SEM images and the corresponding pore size distributions of the macropores formed in the MCFs prepared under the different concentration (C s ) of Tween80 in the RF solution.…”

Section: Effect Of Mass Ratio Of Cyclohexane With Rf Solutionmentioning

confidence: 99%

Preparation of macroporous carbon foam using emulsion templating method

et al. 2011

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A macroporous carbon foam (MCF) possessing three-dimensionally interconnected porous structure, that was composed of macropores, mesopores and micropores, could be synthesized by the oil-in-water (o/w) emulsion templating method using ultrasound. For the preparation of the o/w emulsion as a template of the macropores formed in the MCF, a resorcinol-formaldehyde (RF) solution and cyclohexane were used as an aqueous phase and an oil phase, respectively. We examined the effects of the viscosity of the RF solution, the mass ratio of cyclohexane with the RF solution as well as the concentration of a hydrophilic surfactant (Tween80) contained in the RF solution on the size distribution of the macropores. Consequently, the suitable viscosity of the RF solution to obtain a MCF with a narrow size distribution of the macropores was determined. It was revealed that the size of the macropores increased with the increase in the mass ratio of cyclohexane with the RF solution or with the decrease in the concentration of Tween80. It was possible to increase the porosity of the prepared MCF larger than 90% using a concentrated o/w emulsion as the template of the macropores.

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Interconnected porous epoxy monoliths prepared by concentrated emulsion templating

Cited by 14 publications

References 26 publications

Fabrication of copper coated polymer foam and their application for hexavalent chromium removal

Fabrication of copper coated polymer foam and their application for hexavalent chromium removal

Challenges and strategies in the preparation of large-volume polymer-based monolithic chromatography adsorbents

Preparation of macroporous carbon foam using emulsion templating method

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