Abstract
Polyvinyl alcohol (PVA) composed with polymethyl methacrylate (PMMA) polymer hydrogel was prepared by using boric acid as a cross-linking agent. The semicrystalline phase of composite gel was detected by X-ray diffraction tool. The occupied polymer PMMA morphology exhibits cross-linked alignment shown by scanning electron microscopy (SEM). The two-polymer system demonstrates an excellent dielectric property (with values, ε = 590 for composite gel versus 400 compare to virgin PVA). The nonfluid media exhibit the impulse DC bias polarization. The basic principle of this work is to understand and control the electrical parameters under external stimuli (field) response by Impedance tool. In the biomedical field, this gel may be an excellent supporting media for sonographic as one of the best polar medium.
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Joshi, G.M., Deshmukh, K. Electrical characterization of polymer composite gel under biasing as polar medium. Ionics 20, 529–534 (2014). https://doi.org/10.1007/s11581-013-0995-x
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DOI: https://doi.org/10.1007/s11581-013-0995-x