Organic-solvent free synthesis of mesoporous and narrow-dispersed melamine resin particles for water treatment applications. (24th October 2018)

• Record Type: Journal Article
• Authors: Schwarz, Dana; Weber, Jens
• Is Part Of: Polymer. Volume 155(2018)
• Page Start: 83
• Page End: 88
• Publication Date: 2018-10-24
• Subjects: Porous particles -- Water treatment -- Poly(melamine formaldehyde) -- Templating; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2018.09.028
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: Narrow-dispersed and nanoporous poly(melamine-formaldehyde) particles were prepared by aqueous dispersion polymerization using silica particles as template. The synthesis parameters were optimized towards uniform particles sizes and ideal template performance toward high surface areas. Nitrogen sorption measurements confirmed the 12 nm sized mesopores and a specific surface area of up to 400 m 2 g −1 . The particles sizes and the template distribution were investigated by SEM, TEM, and laser diffraction measurements. The particles were investigated for their oxyanion adsorption properties in dependency of the pH in the water. The preliminary results obtained from the adsorption experiments make nanoporous poly(melamine-formaldehyde) particles a promising candidate for the capture of oxyanions and potentially also for other ions in waste water. Graphical abstract: Highlights: Scalable and simple way of synthesizing nanoporous and narrow-disperse MF particles. Water as a low cost and inert continuous phase was used. Colloidal particles with sizes of <1 μm and a specific surface area of about 350 m 2 g −1 were obtained. Particle size and specific surface area are strongly dependent on the reaction parameters. Adsorption of oxyanions is strongly dependent on the pH-value.