Comparison the performance of different catalysts in chemical modification of Poplar wood with Glutaraldehyde
In this study, the effect of different catalysts on chemical modification of poplar wood and physical properties of the resulting product was evaluated. 12.5% HCl and water soluble salts containing ZnCl2, CaCl2, AlCl3, MgCl2 (based on the weight of glutaraldehyde) and 1% Al2O3, SiO2 and ZnO nano par...
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| Format: | Article |
| Language: | fas |
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Iranian Scientific Association of Wood and Paper Industries
2016-12-01
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| Series: | Iranian Journal of Wood and Paper Industries |
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| Online Access: | http://www.ijwp.ir/article_19231_982242a0d8c321cfe76e33932357fc8c.pdf |
| _version_ | 1818566707516538880 |
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| author | ندا اسماعیلی مریم قربانی pouriya beparva |
| author_facet | ندا اسماعیلی مریم قربانی pouriya beparva |
| author_sort | ندا اسماعیلی |
| collection | DOAJ |
| description | In this study, the effect of different catalysts on chemical modification of poplar wood and physical properties of the resulting product was evaluated. 12.5% HCl and water soluble salts containing ZnCl2, CaCl2, AlCl3, MgCl2 (based on the weight of glutaraldehyde) and 1% Al2O3, SiO2 and ZnO nano particles (based on the weight of glutaraldehyde) were used. After heating in oven for 48 hour, modification with glutaraldehyde and MgCl2, ZnO nano particles, SiO2, Al2O3, ZnCl2, AlCl3, CaCl2 and HCl as catalysts were resulted to 14.5, 12.57, 10.62, 8.69, 8.51, 7.19, 5.97 and 5.41 % weight gain respectively. After 24h soaking in water, the physical properties of modified specimens, such as water absorption, volume swelling and ASE were measured. The highest and lowest bulking were calculated for Mgcl2 and Hcl catalysts with 6.98 and 2.37% respectively. The modification in presence of Mgcl2 catalyst was shown highest increase of density with average of 0.55 g/cm3. The highest and lowest water absorption was measured 79.61 and 45.32% in the modification with HCl and MgCl catalysts. Hcl with acidic quality, can break ether bonds in hemiacetal and even acetal structure. Modification with MgCl2 was shown best result in comparison with other catalysts. It is likely that the formation a complex of magnesium with oxygen, could resulted to activate carbonyl groups in glutaraldehyde and created the crosslink. |
| first_indexed | 2024-12-14T01:57:03Z |
| format | Article |
| id | doaj.art-7a8c92e64afc43d6b511917c583af0aa |
| institution | Directory Open Access Journal |
| issn | 2008-9066 2423-3242 |
| language | fas |
| last_indexed | 2024-12-14T01:57:03Z |
| publishDate | 2016-12-01 |
| publisher | Iranian Scientific Association of Wood and Paper Industries |
| record_format | Article |
| series | Iranian Journal of Wood and Paper Industries |
| spelling | doaj.art-7a8c92e64afc43d6b511917c583af0aa2022-12-21T23:21:09ZfasIranian Scientific Association of Wood and Paper IndustriesIranian Journal of Wood and Paper Industries2008-90662423-32422016-12-017336337519231Comparison the performance of different catalysts in chemical modification of Poplar wood with Glutaraldehydeندا اسماعیلی0مریم قربانی1pouriya beparva2دانشجوی کارشناسی ارشد دانشگاه علوم کشاورزی و منابع طبیعی ساریدانشیار دانشگاه علوم کشاورزی و منابع طبیعی ساری، دانشکده منابع طبیعی، گروه مهندسی چوب و کاغذAssistant Professor., Department of Sciences, Sari University of Agricultural Sciences and Natural Resources, Sari, IranIn this study, the effect of different catalysts on chemical modification of poplar wood and physical properties of the resulting product was evaluated. 12.5% HCl and water soluble salts containing ZnCl2, CaCl2, AlCl3, MgCl2 (based on the weight of glutaraldehyde) and 1% Al2O3, SiO2 and ZnO nano particles (based on the weight of glutaraldehyde) were used. After heating in oven for 48 hour, modification with glutaraldehyde and MgCl2, ZnO nano particles, SiO2, Al2O3, ZnCl2, AlCl3, CaCl2 and HCl as catalysts were resulted to 14.5, 12.57, 10.62, 8.69, 8.51, 7.19, 5.97 and 5.41 % weight gain respectively. After 24h soaking in water, the physical properties of modified specimens, such as water absorption, volume swelling and ASE were measured. The highest and lowest bulking were calculated for Mgcl2 and Hcl catalysts with 6.98 and 2.37% respectively. The modification in presence of Mgcl2 catalyst was shown highest increase of density with average of 0.55 g/cm3. The highest and lowest water absorption was measured 79.61 and 45.32% in the modification with HCl and MgCl catalysts. Hcl with acidic quality, can break ether bonds in hemiacetal and even acetal structure. Modification with MgCl2 was shown best result in comparison with other catalysts. It is likely that the formation a complex of magnesium with oxygen, could resulted to activate carbonyl groups in glutaraldehyde and created the crosslink.http://www.ijwp.ir/article_19231_982242a0d8c321cfe76e33932357fc8c.pdfGlutaraldehydeChemical modificationCatalystsPhysical propertiesWeight percent gain |
| spellingShingle | ندا اسماعیلی مریم قربانی pouriya beparva Comparison the performance of different catalysts in chemical modification of Poplar wood with Glutaraldehyde Iranian Journal of Wood and Paper Industries Glutaraldehyde Chemical modification Catalysts Physical properties Weight percent gain |
| title | Comparison the performance of different catalysts in chemical modification of Poplar wood with Glutaraldehyde |
| title_full | Comparison the performance of different catalysts in chemical modification of Poplar wood with Glutaraldehyde |
| title_fullStr | Comparison the performance of different catalysts in chemical modification of Poplar wood with Glutaraldehyde |
| title_full_unstemmed | Comparison the performance of different catalysts in chemical modification of Poplar wood with Glutaraldehyde |
| title_short | Comparison the performance of different catalysts in chemical modification of Poplar wood with Glutaraldehyde |
| title_sort | comparison the performance of different catalysts in chemical modification of poplar wood with glutaraldehyde |
| topic | Glutaraldehyde Chemical modification Catalysts Physical properties Weight percent gain |
| url | http://www.ijwp.ir/article_19231_982242a0d8c321cfe76e33932357fc8c.pdf |
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