Hydrothermal synthesis of selected phosphates and molybdates

Clearfield, Abraham

doi:10.1016/0960-8974(91)90006-x

Cited by 17 publications

(1 citation statement)

References 111 publications

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“…ZrP was prepared by the direct precipitation reaction method 11. A mixture of phosphoric acid (H 3 PO 4 , Synth) and zirconium(IV) oxide chloride 8‐hydrate (ZrOCl 2 · 8H 2 O, Vetec) in a [P/Zr] ratio of 2.5 was main tained under reflux for 48 h. Precipitated crystals were separated by filtration, washed with distilled water to a pH of ∼ 4, and dried at room temperature.…”

Section: Methodsmentioning

confidence: 99%

Thermal and mechanical properties of poly(ethylene terephthalate)/lamellar zirconium phosphate nanocomposites

Brandão

Mendes

Medeiros

et al. 2006

J of Applied Polymer Sci

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ABSTRACT:The preparation of nanocomposites of poly (ethylene terephthalate) (PET) and lamellar zirconium phosphorous compounds by melt extrusion was investigated. Two types of zirconium phosphorous compounds were synthesized by the direct precipitation reaction method: a-zirconium bis(monohydrogen orthophosphate) monohydrate (ZrP) and organic-inorganic hybrid layered zirconium phenylphosphonate (ZrPP). Composites containing 2 and 5 wt % ZrP and ZrPP were prepared in a twin-screw extruder and specimens were obtained by injection molding. The extent of dispersion of the layered filler in the composite matrix was investigated by X-ray diffraction and transmission electron microscopy (TEM). The crystallization and thermal properties were analyzed by differential scanning calorimetry and thermogravimetry, and the mechanical properties were evaluated by tensile tests. Whereas ZrP-containing composites showe characteristic diffraction peaks at 2y 11.78 (d ¼ 7.54 Å ), indicative of no delamination, ZrPP showed practically no low-angle diffraction peak at 2y 5.58 (d ¼ 15.24 Å ), indicating loss of the layered order. TEM images of ZrPP particles indicated the formation of an intercalated/partially delaminated nanocomposite. The behavior was attributed to the higher affinity of the polyester with phenyl groups on the platelet surface of ZrPP. In both cases, the addition of the fillers increased the crystallization rate and the modulus.

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Section: Methodsmentioning

confidence: 99%

Thermal and mechanical properties of poly(ethylene terephthalate)/lamellar zirconium phosphate nanocomposites

Brandão

Mendes

Medeiros

et al. 2006

J of Applied Polymer Sci

View full text Add to dashboard Cite

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Chemie und Kristallzüchtung

Hulliger

1994

Angewandte Chemie

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Chemistry and Crystal Growth

Hulliger¹

1994

Angew. Chem. Int. Ed. Engl.

188

103

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Single-crystal materials, along with other forms of condensed matter (ceramics, polymers, liquid crystals, etc.) are fundamental to modern technology. The basic research and production of new materials with "tailored" solid-state physical properties therefore necessitate not only chemical synthesis but also the production of single crystals of a particular morphology (either bulk or thin layer crystals) and well-defined crystal defects (doping). In this review, an attempt is made to broaden the traditional synthetic concept of chemistry to the process of single-crystal synthesis. The methods of the resulting approach, which takes into account the specific properties of solid materials, are discussed and illustrated by experimental set-ups for the solution of a range of problems in chemical crystallization. Also included is recent work on the growing of single crystals of high-temperature superconductors, organic nonlinear optical compounds, and proteins.

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Hydrothermal synthesis of selected phosphates and molybdates

Cited by 17 publications

References 111 publications

Thermal and mechanical properties of poly(ethylene terephthalate)/lamellar zirconium phosphate nanocomposites

Thermal and mechanical properties of poly(ethylene terephthalate)/lamellar zirconium phosphate nanocomposites

Chemie und Kristallzüchtung

Chemistry and Crystal Growth

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