Neurofibromatosis Syndrome with Pheochromocytoma

Morphological and Mechanical Properties of Poly (Vinyl Alcohol) Doped with Inorganic Fillers

“…The 1443 cm À1 peak present in the IR spectrum of pure PVA also gets shifted to a lower frequency side in all cases. The change in some of the vibrational frequencies of PVA was observed by Rao et al when sodium iodide was doped in PVA matrix [18]. Veera Brahman et al [31] also made a similar observation to ours for PVA-CuSO 4 composite films prepared by varying the concentrations of copper sulphate from 1-5 mol% with fixed concentration of PVA.…”

“…Various polymers have been reported for processing the composites for different applications [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Polyvinyl alcohol, however, has been extensively used by various researchers for making a wide variety of composites as it exhibits unique properties like solubility in water, good film-forming character, suitable physical properties, high hydrophilicity, processability, non-toxicity, biocompatibility, bio-degradability, chemical resistance, and availability with different molecular weights [16][17][18]. The nanofillers such as metal salts and oxides, pure metals, clays, double hydroxides, etc., have been reported to make composites [11][12][13][14][15][17][18][19][20][21][22][23].…”

Protonic Transport Analysis of Starch-Chitosan Blend Based Electrolytes and Application in Electrochemical Device

“…The steady state is achieved when the movement of mobile ions is balanced by diffusion process, which is due to the ion concentration gradient [52]. The concentration gradient is ascribed to the non unity transference number of ions in the polymer electrolyte, which cause a decay in current to a lower steady state value [53]. It was found that t ion was 0.92 and t e was 0.08, indicating that the charge transport in the polymer complex is predominantly due to ions.…”

Tailoring the Structural, Morphological, Electrochemical, and Dielectric Properties of Solid Polymer Electrolyte

“…It is observed that for all SPEs, the initial current decreases with time and achieved steady state in small time. The initial current is the contribution of both the ions and the electrons ( = + ) while the later one is the contribution of electrons only because of blockage of ions at the electrode-electrolyte interface [45][46][47]. The obtained ion transference number is 0.99 (close to unity).…”