COLOR STABILITY FOR WOOD PRODUCTS DURING USE: EFFECTS OF INORGANIC NANOPARTICLES
Despite significant progress having been achieved in recent years to improve wood’s durability, additional developments are still necessary to increase its color stability. ZnO and CeO2 nanoparticles were compared to UV absorbers (Tinuvin 477 DW, 292 and 5151) commonly used to stabilize the wood pro...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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North Carolina State University
2011-04-01
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| Series: | BioResources |
| Subjects: | |
| Online Access: | http://www.ncsu.edu/bioresources/BioRes_06/BioRes_06_2_1219_Blanchard_B_Color_Stability_Wood_Inorg_Nanoparticles_1404.pdf |
| _version_ | 1828973863779696640 |
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| author | Vincent Blanchard Pierre Blanchet |
| author_facet | Vincent Blanchard Pierre Blanchet |
| author_sort | Vincent Blanchard |
| collection | DOAJ |
| description | Despite significant progress having been achieved in recent years to improve wood’s durability, additional developments are still necessary to increase its color stability. ZnO and CeO2 nanoparticles were compared to UV absorbers (Tinuvin 477 DW, 292 and 5151) commonly used to stabilize the wood products color. Nanoparticles, with concentrations in the range 1 to 2 wt%, and UV absorbers, using concentrations advised by the manufacturer, were dispersed in a waterborne UV curable polyurethane/polyacrylate resin. Dispersions were carried out with a high speed mixer at 2,500 RPM with micro glass beads or not, depending on the form of the nanoparticles. Nanocomposite coatings were aged with a weather-o-meter (CI 3000+ - Atlas) according ASTM G155. Color variations were measured with a colorimeter (BYK Gardner – Color Guide 45/0) working with the CIE L*a*b* system. The aim of the present study was to assess the effects of inorganic UV absorbers on the stabilization of color under indoor conditions. Results showed that nanoparticles (ZnO, CeO2) absorbed UV light frequencies in a manner similar to common organic molecules. Their efficiency was better at medium durations of light exposure, for which they could achieve the action of organic absorbers. Finally, the simultaneous use of both absorbers seems to create a protective synergy when degradation is due to UV energy alone. |
| first_indexed | 2024-12-14T13:51:50Z |
| format | Article |
| id | doaj.art-084dbe73181644ae928dfffaf4ae220c |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-12-14T13:51:50Z |
| publishDate | 2011-04-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-084dbe73181644ae928dfffaf4ae220c2022-12-21T22:59:01ZengNorth Carolina State UniversityBioResources1930-21262011-04-016212191229COLOR STABILITY FOR WOOD PRODUCTS DURING USE: EFFECTS OF INORGANIC NANOPARTICLESVincent BlanchardPierre BlanchetDespite significant progress having been achieved in recent years to improve wood’s durability, additional developments are still necessary to increase its color stability. ZnO and CeO2 nanoparticles were compared to UV absorbers (Tinuvin 477 DW, 292 and 5151) commonly used to stabilize the wood products color. Nanoparticles, with concentrations in the range 1 to 2 wt%, and UV absorbers, using concentrations advised by the manufacturer, were dispersed in a waterborne UV curable polyurethane/polyacrylate resin. Dispersions were carried out with a high speed mixer at 2,500 RPM with micro glass beads or not, depending on the form of the nanoparticles. Nanocomposite coatings were aged with a weather-o-meter (CI 3000+ - Atlas) according ASTM G155. Color variations were measured with a colorimeter (BYK Gardner – Color Guide 45/0) working with the CIE L*a*b* system. The aim of the present study was to assess the effects of inorganic UV absorbers on the stabilization of color under indoor conditions. Results showed that nanoparticles (ZnO, CeO2) absorbed UV light frequencies in a manner similar to common organic molecules. Their efficiency was better at medium durations of light exposure, for which they could achieve the action of organic absorbers. Finally, the simultaneous use of both absorbers seems to create a protective synergy when degradation is due to UV energy alone.www.ncsu.edu/bioresources/BioRes_06/BioRes_06_2_1219_Blanchard_B_Color_Stability_Wood_Inorg_Nanoparticles_1404.pdfNanoparticlesWood colorColor stabilityPhoto-oxidationPhoto-degradationZnOCeO2Ultra-violet light |
| spellingShingle | Vincent Blanchard Pierre Blanchet COLOR STABILITY FOR WOOD PRODUCTS DURING USE: EFFECTS OF INORGANIC NANOPARTICLES BioResources Nanoparticles Wood color Color stability Photo-oxidation Photo-degradation ZnO CeO2 Ultra-violet light |
| title | COLOR STABILITY FOR WOOD PRODUCTS DURING USE: EFFECTS OF INORGANIC NANOPARTICLES |
| title_full | COLOR STABILITY FOR WOOD PRODUCTS DURING USE: EFFECTS OF INORGANIC NANOPARTICLES |
| title_fullStr | COLOR STABILITY FOR WOOD PRODUCTS DURING USE: EFFECTS OF INORGANIC NANOPARTICLES |
| title_full_unstemmed | COLOR STABILITY FOR WOOD PRODUCTS DURING USE: EFFECTS OF INORGANIC NANOPARTICLES |
| title_short | COLOR STABILITY FOR WOOD PRODUCTS DURING USE: EFFECTS OF INORGANIC NANOPARTICLES |
| title_sort | color stability for wood products during use effects of inorganic nanoparticles |
| topic | Nanoparticles Wood color Color stability Photo-oxidation Photo-degradation ZnO CeO2 Ultra-violet light |
| url | http://www.ncsu.edu/bioresources/BioRes_06/BioRes_06_2_1219_Blanchard_B_Color_Stability_Wood_Inorg_Nanoparticles_1404.pdf |
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