01861nas a2200205   4500008004100000022001400041245005700055210005600112260010000168300001200268490000600280520114000286653002801426653002901454653001901483653001901502100002001521700002401541856009001565       2008                        eng d  a1788-618X00aDielectric relaxations in PVDF/BaTiO3 nanocomposites0 aDielectric relaxations in PVDFBaTiO3 nanocomposites  aDEPT POLYMER ENG, MUEGYETEM RKP 3, BUDAPEST, H-1111, HUNGARYbBUDAPEST UNIV TECHNOL & ECONcAPR  a294-3010 v23 a<p>The present work aims at the study of molecular relaxations in PVDF/BaTiO3 nanocomposites using broadband dielectric spectroscopy. The nanocomposites of PVDF with BaTiO3 ( 10-30% by wt%) are prepared using simple melt mixing method. In dielectric permittivity study, two relaxation processes are identified corresponding to the crystalline, glass transition in the PVDF/BaTiO3 nanocomposites. The peaks shift to higher frequencies as the temperature is increased. Electric modulus formalism is used to analyze the dielectric relaxations to overcome the conductivity effects at low frequencies. In M `' spectra two peaks are observed only at high temperature and low frequency whereas a single relaxation peak appears at low temperatures. The single relaxation peak appearing at low temperatures is the alpha(c) relaxation attributed to crystalline chain relaxation in PVDF and the second relaxation peak which appears only at high temperatures and at a frequency lower than alpha(c) relaxation is identified as MWS relaxation. The temperature dependence of alpha(c) relaxation and MWS relaxation follows Arrhenius type behavior.</p>10adielectric spectroscopy10aInterfacial polarization10aMWS relaxation10aNanocomposites1 aChanmal, Chetan1 aJog, Jyoti, Prakash  uhttps://library.ncl.res.in/content/dielectric-relaxations-pvdfbatio3-nanocomposites-001842nas a2200217   4500008004100000022001400041245009200055210006900147260007300216300001000289490000800299520101600307653002601323653002901349653001901378100002701397700002501424700001901449700003301468856012301501       2009                        eng d  a0921-510700aSynthesis of nickel-rubber nanocomposites and evaluation of their dielectric properties0 aSynthesis of nickelrubber nanocomposites and evaluation of their  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJAN  a24-310 v1563 a<p>Nanocomposites based on natural rubber and nano-sized nickel were synthesized by incorporating nickel nanoparticles in a natural rubber matrix for various loadings of the filler. Structural, morphological, magnetic and mechanical properties of the composites were evaluated along with a detailed study of dielectric properties. It was found that nickel particles were uniformly distributed in the matrix without agglomeration resulting ill a magnetic nanocomposite. The elastic properties showed an improvement with increase in filler content but breaking stress and breaking strain were found to decrease. Dielectric permittivity was found to decrease with increase in frequency, and found to increase with increase in nickel loading. The decrease in permittivity with temperature is attributed to the high volume expansivity of rubber at elevated temperatures. Dielectric loss of blank rubber as well as the composites was found to increase with temperature. (C) 2008 Elsevier B.V. All rights reserved.</p>10aDielectric relaxation10aInterfacial polarization10aNanocomposites1 aJamal, Muhammad, Abdul1 aJoy, Pattayil, Alias1 aKurian, Philip1 aAnantharaman, Maliemadom, R.  uhttps://library.ncl.res.in/content/synthesis-nickel-rubber-nanocomposites-and-evaluation-their-dielectric-properties-0