Results 171 to 180 of about 1,699 (208)

Polyhipe foam materials as filtration media

Filtration & Separation, 1995
A novel method of preparing low-density microporous polymeric foam materials has been utilised to produce media which are effective in crossflow microfiltration applications. Polyhipe polymer (PHP) is produced by the polymerisation of a high-internal-phase emulsion (HIPE), resulting in a homogeneous, highly porous, low-density, open cellular material ...
openaire   +1 more source

PolyHIPEs for Separations and Chemical Transformations: A Review

Solvent extraction and ion exchange, 2019
Polymeric foams prepared from polymerizing high internal-phase emulsions (polyHIPEs) provide several distinct advantages over conventional polymer resins for applications in separations as well as chemical transformations, most notably reliance on ...
K. Taylor-Pashow, Julia G. Pribyl
semanticscholar   +1 more source

Synthesis of degradable polyHIPEs by AGET ATRP

Polymer, 2013
Abstract 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, Yelena Epshtein-Assor, Michael S. Silverstein, Krzysztof Matyjaszewski   +3 more
openaire   +1 more source

Amphiphobic polyHIPEs with pH-triggered transition to hydrophilicity–oleophobicity for the controlled removal of water from oil–water mixtures

, 2020
While emulsion-templated porous polymers (polyHIPEs) with pH-controlled wetting behaviours are advantageous for the removal of oils from oil–water mixtures, they are easily clogged by oils and are not suitable for separating mixtures consisting of a ...
Xiaoming Li, Tao Zhang, Zhiguang Xu, Huanjie Chi, Zhu Wu, Yan Zhao   +5 more
semanticscholar   +1 more source

Polymères microcellulaires à base d'émulsions concentrées (polyHIPE)

Plastiques et composites, 2012
L'emploi d'emulsions concentrees comme generatrices de materiaux polymeres microcellulaires a cellules ouvertes represente une alternative attractive aux methodes traditionnelles de moussage. Les materiaux ainsi obtenus, connus sous l'acronyme de polyHIPE, font l'objet d'un vif interet de la part des chercheurs academiques et industriels, du fait de ...
Hervé DELEUZE, Marc BIROT
openaire   +1 more source

Synthesis of hydrogel polyHIPEs from functionalized glycidyl methacrylate

Polymer Chemistry, 2016
Highly porous hydrogels based on functionalized glycidyl methacrylate (GMA) have been successfully prepared through the high internal phase oil-in-water emulsions.
David Pahovnik, Janja Majer, Ema Žagar, Sebastijan Kovačič   +3 more
openaire   +1 more source

Functionalized cellulose nanocrytals (fCNCs) reinforced PolyHIPEs: Tailoring morphological, mechanical and thermal properties

Reactive & functional polymers, 2020
We report the preparation of poly(styrene-co-divinylbenzene-co-2-ethylhexyl acrylate) polyHIPE composite foams through the use of silane functionalized cellulose nanocrytals (fCNCs). By varying the concentration of methacryloxypropyltrimethoxysilane (MPS)
H. H. Mert, M. Moghbeli, Safoora Sajad, E. H. Mert   +3 more
semanticscholar   +1 more source

Ion exchange modules formed from polyhipe foam precursors

Chemical Engineering Journal, 1998
Abstract Homogeneous, highly porous, low density, open cellular polyhipe polymer (PHP) has been produced by polymerisation of a high internal phase emulsion. Its surface properties were modified by sulphonation. By incorporating Na + ions onto the sulphonated PHP surfaces a modular form of ion exchange resin capable of effective exchange with metal ...
R WAKEMAN, Z BHUMGARA, G AKAY
openaire   +1 more source

A facile synthesis of cationic and super-hydrophobic polyHIPEs as precursors to carbon foam and adsorbents for removal of non-aqueous-phase dye

, 2020
Porous poly (ionic liquid)s (PILs) materials, an emerging class of ionic porous materials, exhibit high charge density, high porosity and processability due to the combination of features of ionic liquid with properties of polymer and porous material ...
Ruoyu Wang, Wei Li, Ruiyang Lu, Junxia Peng, Xiaoyan Liu, Kaiqiang Liu, Haonan Peng   +6 more
semanticscholar   +1 more source

High surface area polyHIPEs with hierarchical pore system

Soft Matter, 2009
The synthesis of polyHIPEs with bimodal pore-size distribution and very high specific surface areas up to 1210 m2 g−1 is reported. Monolithic polyHIPE precursors were swollen, and subsequently the polymeric network was crosslinked in the expanded state by internal and external electrophiles under catalysis of a Lewis acid leading to hypercrosslinked ...
Schwab, M., Senkovska, I., Rose, M., Klein, N., Koch, M., Pahnke, J., Jonschker, G., Schmitz, B., Hirscher, M., Kaskel, S.   +9 more
openaire   +3 more sources