Synthesis of comb type and semi-interpenetrating networks of acryloyl-l-proline methyl ester and poly (acrylic acid) for Cu (II) immobilization |
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| Authors: | Giovanni González Guillermina Burillo |
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| Institution: | 1. Polymer Reaction Design Group, Institute for Materials Research, Hasselt University, Universitaire Campus, Building D, B-3590 Diepenbeek, Belgium;2. Department of Polymer Chemistry and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747AG Groningen, The Netherlands;3. IMEC, Division IMOMEC, Wetenschapspark 1, B-3590 Diepenbeek, Belgium;1. Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran;2. IFW Dresden, Institute for Complex Materials, Helmholtzstr. 20, D-01069 Dresden, Germany;3. SATIE, UMR CNRS 8029, ENS de Cachan, 61, Avenue du Président Wilson, 94235 Cachan, France;4. TU Dresden, Institut für Werkstoffwissenschaft, D-01062 Dresden, Germany;1. Institute of Nuclear Chemistry and Technology, Warsaw, Poland;2. Institute for Engineering of Polymer Materials and Dyes, Piastów, Poland;1. Peoples Friendship University of Russia, 6, Mikluho Maklaya St., Moscow 117198, Russia;2. A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov St. 28, B-334, Moscow 119991, Russia;3. Institute of Chemistry, Vietnam Academy of Science & Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam |
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| Abstract: | Graft copolymer hydrogels and semi-interpenetrating networks (s-IPN) of acryloyl-l-proline methyl ester (A-ProOMe) and poly (acrylic acid) (PAAc) were synthesized in methanol solutions, by ionizing radiation (γ rays from a Co60 source at room temperature). These systems are thermo and pH-sensitive and the pH sensitivity increases from acidic to basic solutions. The Lower Critical Solution Temperature (LCST), due to presence of poly (acryloyl-l-proline methyl ester) (PA-ProOMe) has been found between 18 and 20 °C and an unexpected Upper Critical Solution Temperature (UCST) due to poly acrylic acid (PAAc) has been found between 21 and 22 °C. Preliminary studies on the immobilization of Cu2+ for both hydrogels were done at several pH values at room temperature. Other techniques employed to characterize the comb type hydrogels and sIPN included scanning electronic microscopy (SEM) and infrared (FTIR-ATR). |
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