New crosslinked hydrogels derivatives of 2-hydroxyethyl methacrylate: Synthesis, modifications and properties

Abstract

Abstract. This paper presents the synthesis, physicochemical properties and modifications of 2-hydroxyethyl methacrylate copolymers. It describes the new 2-hydroxyethyl methacrylate hydrogels in the form of microbeads of different degrees of crosslinking (2, 5, 8, 10, 15 and 20% mol). As crosslinking monomers bis[4(2-hydroxy-3-methacryloyloxypropoxy) phenyl]-sulfide and ethylene glycol dimethacrylate were used. The new hydrogels were obtained by two alternative methods in a suspension copolymerisation procedure. The copolymers were modified with diethylenetriamine in an epoxide opening reaction. Thermal properties (differential scanning calorimetry, thermogravimetric analysis) and swelling characteristic in typical solvents of the obtained functional hydrogels were examined. The chemical structure of the copolymers before and after modification was confirmed by Fourier transform infrared spectroscopy and elemental analyses. Moreover, their sorptive properties in removal of Cu(II), Zn(II), Cd(II), and Pb(II) ions from aqueous solutions were also presented. The Langmuir and Freundlich isotherm models are used to describe the adsorption characteristics of the selected modified hydrogels.

Synthesis of a Gum rosin alcohol-poly(acrylamide) based adsorbent and its application in removal of malachite green dye from waste water

“…[1][2][3][4][5][6][7][8][9] Such materials are widely used in agriculture, biomedicine, tissue engineering and as sorbents in the textile industry for removal of dyes and heavy metal ions. They generally contain -OH, -NH 2 , -COOH, -CONH 2 and -SO 3 functional groups.…”

Investigation of the thermal behavior of 4-vinylpyridine–trimethylolpropane trimethacrylate copolymeric microspheres

“…Taking into account, the utilization of polymeric microspheres in the field of chromatography, control of the particle size, the size distribution, the polymer composition, porosity, and functionality should be especially considered. Functionality can be introduced onto the particle surface by applying functional monomers [1][2][3][4] that can also play the role of crosslinking agents [5,6]. A more complicated route of functionalizing the surface of microspheres is the incorporation into the polymer network of a reactive monomer capable of derivatization, e.g., epoxide rings or chloroalkyl moiety [7,8].…”

Synthesis, Characterization and Swelling study of Poly (Methacrylic acid-co-Maleic acid) Hydrogels

“…The absorption bands at 1705 and 1690 cm Figure 2 shows the thermal degradation of PMAA and P(MAA-MA5) samples by weight loss as a function of temperature. It was observed that there was no weight loss up to 75 °C and 150 °C for both PMAA and P(MAA-MA5), respectively which can be related to water molecules loss 20,21 . PMAA and P(MAA-MA5) hydrogels present sharp weight loss at 260 °C and 395 °C respectively, indicating the decomposition of the hydrogels backbone.…”