Preparation of a Poly(furfuryl alcohol)‐Coated Highly Porous Polystyrene Matrix

Abstract

Highly porous PS/DVB monoliths were prepared by polymerisation of the continuous phase of a high internal phase emulsion. To improve the mechanical properties of these brittle materials, the monoliths were placed in the presence of FA vapours and the adsorbed monomer was polymerised by heating to create a coating onto the matrix surface. The influence of the coating on the material porous structure was investigated by SEM, mercury intrusion porosimetry and nitrogen adsorption/desorption analyses. The progressive increase in PFA content induced a porosity decrease and a modification of the pore distribution. The more pronounced effect of the coating was the remarkable improvement in the material mechanical properties.magnified image

Robust macroporous polymers: Using polyurethane diacrylate as property defining crosslinker

“…Their elastic moduli were up to 4.3 times higher than those of macroporous poly(styrene-co-divinylbenzene) controls. An even higher increase (7 fold) in both, elastic modulus and strength, could be achieved by impregnating polyHIPEs with furfuryl alcohol followed by subsequent curing [29]. By polymerising both the continuous phase and internal phase of emulsions, polymethacrylic acid and polydimethyl aminoethyl methacrylate reinforced polyHIPEs have been prepared: in this case reinforcement can be "switched off" by moisture, which resulted in softening the hydrogels [30].…”

Catalyst-free synthesis of poly(furfuryl alcohol) using deep eutectic solvents

“…[17][18][19][20][21] This aforementioned vast area of applications and the renewable nature of PFA constantly motivate researchers to develop sustainable methods. Generally, PFA has been synthesized via the polymerization of FA in acidic medium using various acid catalysts including organic acids such as maleic anhydride, 22 oxalic acid, 23 and p-toluene sulfonic acid, 24,25 mineral acids such as Maghnite, 26 and inorganic acids such as sulfuric acid, 11,27 hydrochloric acid, 28,29 and Lewis acids. 30,31 However, most of these methods involve harmful acid/ organic solvent systems that not only further increase the total cost of the process but also are dangerous for the safety of the environment.…”

Exploring the Effect of Poly(propylene carbonate) Polyol in a Biobased Epoxy Interpenetrating Network

“…17−19 PFA has been used in foundry molds, as adhesives for wood, and as precursors of graphitic materials. 18,20−22 In recent years, scientists have developed PFA composites, 20,23,24 although there are not enough of studies on epoxy and PFA IPNs. Woodson et al 25 invented a new acid curable composition containing epoxy and furan resin for concrete structures.…”