2014
DOI: 10.1246/cl.140926
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Core–Shell Approach to Control Acid–Base Properties of Surface of Dielectric and Permittivity of Its Composite

Abstract: Hybrid organic–inorganic composites comprising cyanoethyl ester of poly(vinyl alcohol) (CEPVA) and submicron-sized barium titanate with a core–shell structure are studied. For the first time, the permittivity of obtained composites was studied in correlation with the acid–base properties of the filler and controlled via the filler surface modification by the formation of core–shell structures using sol–gel and plasma processes. The permittivity is found to grow with the increase in the content of Brønsted basi… Show more

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Cited by 30 publications
(9 citation statements)
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“…This screen must be more reliable if saturate one side of the screen with silica sol and create a protective film preventing leakage through the screen into the soil during exploitation. These geoecoprotective properties are examined in papers [12][13][14][15][16][17][18][19][20].…”
Section: Discussionmentioning
confidence: 99%
“…This screen must be more reliable if saturate one side of the screen with silica sol and create a protective film preventing leakage through the screen into the soil during exploitation. These geoecoprotective properties are examined in papers [12][13][14][15][16][17][18][19][20].…”
Section: Discussionmentioning
confidence: 99%
“…At the same time, establishing the relationship between the mathematical models describing the structure of composites and their target properties remains an important and largely unsolved problem. In [4][5][6][7], an integrated approach was proposed to control the electrical characteristics of polymer-inorganic composites, in particular, to increase the dielectric constant and to reduce dielectric losses by controlling the donor-acceptor interphase interactions in the filler-binder system, as well as by modifying the surface layer of ferroelectric fillers with nanocarbon additives. The maximum values of the dielectric constant of such composites were achieved by modifying barium titanate through precipitation of fullerenol from an aqueous suspension.…”
Section: Introductionmentioning
confidence: 99%
“…Вместе с тем, важной и во многом нерешенной задачей остается установление взаимосвязи между математическими моделями, описывающими структуру композитов, и их целевыми свойствами. В [4][5][6][7] был предложен комплексный подход к управлению электрическими характеристиками полимерно-неорганических композитов, в частности повышению диэлектрической проницаемости и снижению диэлектрических потерь за счет регулирования донорно-акцепторных межфазных взаимодействий в системе наполнитель-связующее, в том числе модифицирования поверхностного слоя сегнетоэлектрических наполнителей наноуглеродными добавками. Максимальные значения диэлектрической проницаемости подобных композитов были достигнуты при модифицировании титаната бария осаждением фуллеренола из водной суспензии.…”
Section: Introductionunclassified