title: Biomass Vanillin-Derived Polymeric Microspheres Containing Functional Aldehyde Groups: Preparation, Characterization, and Application as Adsorbent.
abstract: The contribution reports the first polymeric microspheres derived from a biomass, vanillin. It reacted with methacryloyl chloride, providing monomer vanillin methacrylate (VMA), which underwent suspension polymerization in aqueous media and yielded microspheres in high yield (>90 wt %). By controlling the N2 bubbling mode and by optimizing the cosolvent for dissolving the solid monomer, the microspheres were endowed with surface pores, demonstrated by SEM images and mercury intrusion porosimetry measurement. Taking advantage of the reactive aldehyde groups, the microspheres further reacted with glycine, thereby leading to a novel type of Schiff-base chelating material. The functionalized microspheres demonstrated remarkable adsorption toward Cu(2+) (maximum, 135 mg/g) which was taken as representative for metal ions. The present study provides an unprecedented class of biobased polymeric microspheres showing large potentials as adsorbents in wastewater treatment. Also importantly, the reactive aldehyde groups may enable the microspheres to be used as novel materials for immobilizing biomacromolecules, e.g. enzymes.
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, ‡State Key Laboratory of Organic-Inorganic Composites, and §College of Materials Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China.
authors.forename: Huanyu
authors.initials: H
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, ‡State Key Laboratory of Organic-Inorganic Composites, and §College of Materials Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China.
authors.forename: Xueyong
authors.initials: X
authors.lastname: Yong
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, ‡State Key Laboratory of Organic-Inorganic Composites, and §College of Materials Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China.
authors.forename: Jinyong
authors.initials: J
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, ‡State Key Laboratory of Organic-Inorganic Composites, and §College of Materials Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China.
authors.forename: Jianping
authors.initials: J
authors.lastname: Deng
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, ‡State Key Laboratory of Organic-Inorganic Composites, and §College of Materials Science and Engineering, Beijing University of Chemical Technology , Beijing 100029, China.
authors.forename: Youping
authors.initials: Y
authors.lastname: Wu
mesh_terms: D000327:Adsorption; D000447:Aldehydes / Q000737:chemistry*; D001547:Benzaldehydes / Q000737:chemistry*; D018533:Biomass; D002614:Chelating Agents / Q000737:chemistry; D003300:Copper / Q000302:isolation & purification; D008628:Mercury / Q000737:chemistry; D008863:Microspheres; D011108:Polymers / Q000737:chemistry*; D016062:Porosity; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature
chemical_list: D000447:Aldehydes; D001547:Benzaldehydes; D002614:Chelating Agents; D011108:Polymers; D003300:Copper; C100058:vanillin; D008628:Mercury
keywords: Schiff-base; adsorbent; biomass; polymer microspheres; vanillin