𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Percolation and Modeling of Proton Conduction in Polymer/Brushite Composites

✍ Scribed by Laurence Tortet; Jean-Raymond Gavarri; Jean Musso; Geneviève Nihoul; Andrey K. Sarychev

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
571 KB
Volume
141
Category
Article
ISSN
0022-4596

No coin nor oath required. For personal study only.

✦ Synopsis

Composites have been fabricated by compressing polycrystalline brushite mixed with a polymer powder into pellets to study the surface activities and proton mobilities of acid CaHPO 4 • 2H 2 O phosphates (brushite). The electrochemical properties of such composites are studied using complex impedance spectroscopy analyses. Two types of surface proton migrations have been observed by following the water content of the samples. The various proton migrations through these granular materials and the percolation threshold of these currents are interpreted using various modeling approaches. Three models are used and compared: the effective medium approximation (EMA), a model based on the percolation theory, and a semiempirical microstructural electrical model.

📜 SIMILAR VOLUMES

Mechanism of thermal and electrical cond
Mechanism of thermal and electrical conductivity in polymer-nanocarbon composites
✍ A. Lazarenko; L. Vovchenko; Y. Prylutskyy; L. Matzuy; U. Ritter; P. Scharff 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 121 KB

## Abstract The electrical and thermal conductivity of nanocarbon filled polymers were studied by adding nanocarbon fillers (thermoexfoliated graphite (TEG) and dispersed TEG (nanoTEG)) to epoxy resin (ED) or polyethylene oxide (PEO). The content of filler in composite materials (CM) was (0.5–10) w

Effect of Polymer Composition and Water
Effect of Polymer Composition and Water Content on Proton Conductivity in Vinyl Benzyl Phosphonic Acid—4-Vinyl Pyridine Copolymers
✍ Fengjing Jiang; Anke Kaltbeitzel; Birgit Fassbender; Gunther Brunklaus; Hongting 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 410 KB

## Abstract The proton conductivities of poly(vinylbenzyl phosphonic acid) (PVBPA) homopolymer and its statistical copolymers with 4‐vinyl pyridine [poly(VBPA‐__stat__‐4VP)s] are comprehensively studied in this work. Temperature and composition‐dependent “dry” proton conductivities of the copolymer

Model of liquid permeability in swollen
Model of liquid permeability in swollen composites of superabsorbent polymer and fiber
✍ Fredric L. Buchholz 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 282 KB 👁 1 views

## Abstract The liquid permeability of composites of fiber and superabsorbent polymer (SAP) is critical to the proper performance of absorbent hygiene products such as infant diapers. Previous work has focused on empirically improving performance of absorbent composites by modifying the components,

Physical model of interface and interpha
Physical model of interface and interphase performance in composite materials and bonded polymers
✍ Gutowski, W. S. 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 116 KB

The 'rheological model' of adhesion developed by Gent and Schultz significantly broadened the applicability of the thermodynamic model of adhesion by accounting not only for the thermodynamic energy of adhesion, but also for the irreversibly dissipated energy occurring during viscoelastic and plasti