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TUPSA44 |
Radiation-induced Nanocomposite Polymer Films Fabrication Techniques | |
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Metal nanoparticles formation under the ionizing radiation can be processed under variety of conditions, which include liquid and solid media, heterogeneous and complexed phases, low and high dose rates. The reverse micelles (RM), as nano-reactors, were used for metal nanoparticles (NPs) formation*. Optical properties of metallic NPs in RM solution, in transparent polymer films and membranes were registered using UV-VIS spectrophotometry. The purpose of investigation was the determination of the physico-chemical properties of perfluoro-sulphonated membranes (Nafion and MF-4SK) with incorporated metallic NPs (Pd, Pt, Ag, Au). Modification of membranes done by dipping of the samples in NP RM solution was controlled spectrophotometrically at different stages of membranes contact with modifying media. Atomic force microscopy (AFM) established, that the size of NP (Z-size) from the micellar solutions was in the range of 1-10 nm depending on the dose (5-15 kGy) of gamma-irradiation carried out at RKhM gamma-20 setup or EB-irradiation at UELV-10 accelerator. Results of metal NPs incorporation into membranes via dipping in NP RMS were compared with data obtained during research of cellophane films NPs-modification conducted "in situ"** - at the same time with the synthesis on the NPs in RM systems under irradiation.
*A. Revina, Patent RF No. 2322327. Bull. No. 11 (2008) **A. Revina, Patent RF No. 2212268. Bull. No. 26 (2003) |
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