Results 121 to 130 of about 338 (159)
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Industrial & Engineering Chemistry Research, 1999
A novel type of highly porous polymeric monolith called PolyHipe has been applied as a support for an immobilized catalyst (sulfonic acid). Somewhat differently from a conventional packed bed where the reaction mixture flows around the porous catalytic particles, here, the reaction mixture is forced through the pores of the monolith.
Ottens, M +4 more
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A novel type of highly porous polymeric monolith called PolyHipe has been applied as a support for an immobilized catalyst (sulfonic acid). Somewhat differently from a conventional packed bed where the reaction mixture flows around the porous catalytic particles, here, the reaction mixture is forced through the pores of the monolith.
Ottens, M +4 more
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Ionic Liquids as Internal Phase for Non‐Aqueous PolyHIPEs
Macromolecular Rapid Communications, 2011AbstractStable high internal phase emulsions (HIPEs) with the ionic liquid 1‐ethyl‐3‐methylimidazolium bis(trifluoromethyl‐sulfonyl)imide as dispersed phase were prepared and polymerised thermally into polyHIPEs. All polyHIPEs exhibited pore morphologies similar to that of polyHIPEs obtained with an aqueous dispersed phase.
Shirshova N. +2 more
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A new route to carbon black filled polyHIPEs
Soft Matter, 2006A series of carbon black filled polyHIPEs was synthesised following a new preparation protocol. 1 wt% carbon black was dispersed in the monomer mixture. In order to enhance the stability of the suspension, polymer grafting of carbon black was performed by initiating the polymerisation prior to emulsifying the formulation. All of the carbon black filled
Angelika, Menner +2 more
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Hierarchical Porous Polystyrene Monoliths from PolyHIPE
Macromolecular Rapid Communications, 2015Hierarchical porous polystyrene monoliths (HCP-PolyHIPE) are obtained by hypercrosslinking poly(styrene-divinylbenzene) monoliths prepared by polymerization of high internal phase emulsions (PolyHIPEs). The hypercrosslinking is achieved using an approach known as knitting which employs formaldehyde dimethyl acetal (FDA) as an external crosslinker ...
Xinjia, Yang +4 more
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Synthesis of degradable polyHIPEs by AGET ATRP
Polymer, 2013Abstract Conditions to synthesize a degradable polymerized high internal phase emulsion (PolyHIPE) by a controlled radical polymerization (CRP) method, atom transfer radical polymerization (ATRP), have been developed for the first time. Activators generated by electron transfer (AGET) ATRP were used to copolymerize 2-ethylhexyl methacrylate (EHMA ...
Melissa Lamson +3 more
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Synthesis and functionalisation of polyHIPE® beads
Reactive and Functional Polymers, 2002Discrete spheroidal particles of interconnected microcellular foams were synthesised by suspension polymerisation of a high internal phase emulsion. These particles have been surface-grafted with functionalised macromolecular chains by controlled radical polymerisation using a covalently-bond TEMPO initiator.
Alexandre Desforges +3 more
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PolyHIPEs for Separations and Chemical Transformations: A Review
Solvent Extraction and Ion Exchange, 2019Polymeric foams prepared from polymerizing high internal-phase emulsions (polyHIPEs) provide several distinct advantages over conventional polymer resins for applications in separations as well as ...
Kathryn M. L. Taylor-Pashow +1 more
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Biodegradable Fumarate-Based PolyHIPEs as Tissue Engineering Scaffolds
Biomacromolecules, 2007PolyHIPEs show great promise as tissue engineering scaffolds due to the tremendous control of pore size and interconnectivity afforded by this technique. Highly porous, fully biodegradable scaffolds were prepared by polymerization of the continuous phase of high internal phase emulsions (HIPEs) containing the macromer poly(propylene fumarate) (PPF) and
Elizabeth M, Christenson +4 more
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PolyHIPEs from Divinyl Adipate: Preparation and Degradability
Macromolecular Chemistry and Physics, 2013Using a high internal phase emulsion templating approach, highly porous open cellular polymers are prepared from divinyl adipate (DVA). The morphological structure of the monoliths includes cavities in the diameter range of around 5–25 μm and secondary interconnecting pores approximately 1 μm in diameter.
Marko Turnšek, Peter Krajnc
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Preparation and functionalization of (vinyl)polystyrene polyHIPE®.
Reactive and Functional Polymers, 2000A Mercier, H Deleuze, O Mondain-Monval
exaly +2 more sources