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Materiale Plastice
Cite as: Mater. Plast.
https://doi.org/10.37358/Mat.Plast.1964

OSIM Nr. R102356
ISSN Print 0025-5289
ISSN Online 2668-8220
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Materiale Plastice (Mater. Plast.), Year 2011, Volume 48, Issue 2,





Gabriela Craciun, Elena Manaila, Diana Martin, Dorina Toader, Daniel Ighigeanu Synthesis of New Flocculant Materials by Copolymerization of Acrylamide and Acrylic Acid by Electron Beam Irradiation


Abstract:
Radiation-induced polymerization can produce a wide variety of water-soluble polyelectrolytes which are used to increase the performance of the waste water treatment. The main goal of this study was to investigate the influence of the radiation dose (D), initiator concentration , sodium chloride concentration, total monomer concentration and monomer ratio (R) on the physical and chemical properties of the acrylamide - acrylic acid based polyelectrolites, obtained by copolymerization in accelerated electron beam fields. In accordance with the established purposes, the polyelectrolyte must have high conversion coefficient (CC > 95%), low residual monomer content (Mr < 0.01), high intrinsic viscosity (hintr > 7 dL/g), low linearity coefficient (kH < 0.4) and a very good solubility in water. The experiments were performed using a linear accelerator facility (ALIN-10, built in NILPRP Accelerators Laboratory, Bucharest) of 6.23 MeV at irradiation doses between 0.9 kGy and 1.8 kGy at room temperature and ambient pressure. The best results were obtained at 1.5 kGy. Keywords: acrylamide, acrylic acid, ionizing radiation, polyelectrolytes



Issue: 2011 Volume 48, Issue 2
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