Preparation and characterization of novel poly(glycidyl methacrylate) beads carrying amidoxime groups

Abstract

Poly(glycidyl methacrylate) (PGMA) beads with an average size of 350 lm were synthesized by suspension polymerization technique. The PGMA beads were first modified with iminodiacetonitrile (IDAN). Then, the IDAN-modified beads were subsequently modified by hydroxylamine. The IDAN modification and the conversion of the nitrile groups to amidoxime were followed by FT-IR spectroscopy. The surface morphology and thermal behav-ior of the PGMA and its modified forms were also characterized by scanning electron microscopy and thermogravimetric analysis techniques, further confirming modification and amidoximation.

Synthesis and characterization of reactive macroporous poly(glycidyl methacrylate‐triallyl isocyanurate‐ethylene glycol dimethacrylate) microspheres by suspension polymerization: Effect of synthesis variables on surface area and porosity

“…The FT‐IR spectrum of a typical P GMA‐TAIC‐EGDMA (a) and P GMA‐EGDMA (b) beads are presented in Figure 2 which ensured the presence of oxirane functionality and triazine ring of TAIC. The IR spectrum gave a prominent band at 1260 cm −1 due to the symmetrical stretching of the oxiranoyl ring 8, 30. Another band at 908 cm −1 due to epoxy ring out of plane vibration further confirmed the presence of epoxy group and hence GMA 31.…”

“…These prominent absorption bands at 1150 and 1463 cm −1 are assigned to the CH 2 scissoring and bending modes (δHCH) of both GMA and EGDMA, respectively. The broad absorption band at 3400–3600 cm −1 in both the spectra (a, b) can be attributed to the OH stretching of hydrogen‐bounded alcohol 8, 33…”

High performance of amidoxime/amine functionalized polypropylene for uranyl (VI) from aqueous solution

“…To obtain information on the relative performance of the adsorbent in kinetic terms, the adsorption of uranium ion from 100 ppb standard solutions at pH 8.0 and 25 0 C were followed as a function of time, samples being taken for evaluation at 10,15,20,25,30,40, 60, and 120 min intervals. Kinetic studies were conducted using four different initial concentrations (0.138×10 -6 , 0.276×10 -6 , 0.829×10 -6 , 1.38×10 -6 , 2.76×10 -6 moL/L) of U(VI) at 25 0 C. The effects of solution pH (2-8) on U(VI) adsorption were studied.…”

“…The studies indicate that poly(acrylamidoximes) are the most promising candidate adsorbents for the recovery of uranium from seawater. Therefore, recent studies have been focused on the amidoxime-based adsorbent system [15][16][17][18][19][20][21].…”

Synthesis and metal ion adsorption properties of poly(4‐sodium styrene sulfonate‐co‐acrylic acid)

“…1 The effective treatment of metal ions from aqueous solutions has received much attention because of their toxicity even at low concentration and their tendency to bioaccumulate. 2 The ability of several methods, such as ion exchange, adsorption, reverse osmosis, and precipitation to remove metal ions from polluted liquids, has been extensively studied in the literature. 3,4 Ion exchangers and chelating resins are widely used in hydrometallurgy, especially for the recovery of precious metals from leaching solutions.…”