SYNTHESIS OF LUMINESCENT INK FROM EUROPIUM-DOPED Y2O3 DISPERSED IN POLYVINYL ALCOHOL SOLUTION
Luminescent ink from europium-doped Y2O3 (Y2O3:Eu) has been synthesized by two steps method: first, synthesis of luminescent powder of Y2O3:Eu by simple heating of metallic nitrates in a polymer solution and second, dispersing the powder in a polyvinyl alcohol (PVA) solution. The stability of the in...
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id-itb.:118882017-09-27T14:40:56ZSYNTHESIS OF LUMINESCENT INK FROM EUROPIUM-DOPED Y2O3 DISPERSED IN POLYVINYL ALCOHOL SOLUTION (NIM: 20207015), ASTUTI Indonesia Theses INSTITUT TEKNOLOGI BANDUNG https://digilib.itb.ac.id/gdl/view/11888 Luminescent ink from europium-doped Y2O3 (Y2O3:Eu) has been synthesized by two steps method: first, synthesis of luminescent powder of Y2O3:Eu by simple heating of metallic nitrates in a polymer solution and second, dispersing the powder in a polyvinyl alcohol (PVA) solution. The stability of the ink (luminescent colloid) was strongly affected by mixing process of the powder and the solution. Mixing process must be performed for a long time (about 8 hours) at above room temperature to product stable colloids. We observed that mixing at 30-40oC resulted in a stable and highly dispersed colloid. The writing test was performed on a white paper to show the potential use of the colloid for making security codes. <br /> text |
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Luminescent ink from europium-doped Y2O3 (Y2O3:Eu) has been synthesized by two steps method: first, synthesis of luminescent powder of Y2O3:Eu by simple heating of metallic nitrates in a polymer solution and second, dispersing the powder in a polyvinyl alcohol (PVA) solution. The stability of the ink (luminescent colloid) was strongly affected by mixing process of the powder and the solution. Mixing process must be performed for a long time (about 8 hours) at above room temperature to product stable colloids. We observed that mixing at 30-40oC resulted in a stable and highly dispersed colloid. The writing test was performed on a white paper to show the potential use of the colloid for making security codes. <br />
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| format |
Theses |
| author |
(NIM: 20207015), ASTUTI |
| spellingShingle |
(NIM: 20207015), ASTUTI SYNTHESIS OF LUMINESCENT INK FROM EUROPIUM-DOPED Y2O3 DISPERSED IN POLYVINYL ALCOHOL SOLUTION |
| author_facet |
(NIM: 20207015), ASTUTI |
| author_sort |
(NIM: 20207015), ASTUTI |
| title |
SYNTHESIS OF LUMINESCENT INK FROM EUROPIUM-DOPED Y2O3 DISPERSED IN POLYVINYL ALCOHOL SOLUTION |
| title_short |
SYNTHESIS OF LUMINESCENT INK FROM EUROPIUM-DOPED Y2O3 DISPERSED IN POLYVINYL ALCOHOL SOLUTION |
| title_full |
SYNTHESIS OF LUMINESCENT INK FROM EUROPIUM-DOPED Y2O3 DISPERSED IN POLYVINYL ALCOHOL SOLUTION |
| title_fullStr |
SYNTHESIS OF LUMINESCENT INK FROM EUROPIUM-DOPED Y2O3 DISPERSED IN POLYVINYL ALCOHOL SOLUTION |
| title_full_unstemmed |
SYNTHESIS OF LUMINESCENT INK FROM EUROPIUM-DOPED Y2O3 DISPERSED IN POLYVINYL ALCOHOL SOLUTION |
| title_sort |
synthesis of luminescent ink from europium-doped y2o3 dispersed in polyvinyl alcohol solution |
| url |
https://digilib.itb.ac.id/gdl/view/11888 |
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