Water as a morphological probe to study polymer–filler interfaces: an original application of thermoporosimetry

Abstract

This paper is devoted to the characterization of polymer-filler interfaces by thermoporosimetry using water as a probe. Composites of EVA filled with aluminium hydroxide with high filler content for the required fire retardant properties have been studied. After water sorption at 90 °C, the composites have been analyzed by thermoporosimetry using water as a morphological probe. This technique first allowed studying the influence of the filler content and the specific surface area on the water uptake. The study with drying steps and two molecular probes (water and cyclohexane) has highlighted that water is confined at the interface and thus thermoporosimetry is a powerful tool to characterize interfaces in EVA-ATH composites.

Moisture outgassing from siloxane elastomers containing surface-treated-silica fillers

“…A small peak shift of about 2-3°to higher temperature, as well as larger amount of moisture under the physisorption peak is evident in the TPD profile of LL50 compared to the one from R8200 filler (shown in Fig. 4a), and may be due to water trapped 31 in between the silica filler surfaces and polymer matrix as shown in Fig. 5e.…”

Mechanical Degradation of Different Classes of Composite Resins Aged in Water, Air, and Oil

“…[16–18] In a next step, hydrolysis or hydration of siloxane bonds of the silane layer will occur due to the degradation of matrix-filler bonds; surface or internal cracks and porosity would facilitate water access to this interface. [13, 19] Finally, there could be solubilization of the particles by releasing ions of the components [20, 21] and the presence of other solvents, lubricants, electrolytes, or enzymes, [15, 21, 22] along with mechanical cycling that would accelerate the process, occurs. According to this analysis, silane plays an important role as a binding agent in the chemical and mechanical stability of these materials.…”

A Review Ba(OH)2 : Transpor Ionik pada Barium Hidroksida di dalam Air dengan Konsep Termodinamika

“…BaO + 9 H2O → Ba (OH)2 • 8H2O. Senyawa ini mengkristal sebagai oktahidrat (49)(50)(51) yang mengkonversi menjadi monohidrat setelah pemanasan di udara, sehingga sulit untuk menentukan bagaimana kebasaan dari senyawa yang terbentuk dari elemen barium tersebut. Senyawa ini perlu untuk dikenali lagi bagaimana karakteristiknya sehingga senyawa ini tak mudah terdekomposisi menjadi senyawa lain.…”

“…Rumus kimia : OH -Massa molar : 17,01 g/mol Asam konjugasi : air Basa konjugasi :anion oksida Analisis 2D Barium hidroksida (49)(50)(51) menggunakan ChemDraw Ultra. (77)…”