Thermal behavior of alginic acid and its sodium salt
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| Natura: | Artículo científico |
| Lingua: | en |
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Universidade Estadual Paulista Júlio de Mesquita Filho
2004
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| _version_ | 1876455328346800128 |
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| author | E. T. G. Cavalheiro |
| author_facet | E. T. G. Cavalheiro |
| contents | Thermal behavior of alginic acid and its sodium salt E. T. G. Cavalheiro J. P. Soares J. E. Santos G. O. Chierice Química alginic acid thermogravimetry differential scanning calorimetry An evaluation of hydration and thermal decomposition of HAlg and its sodium salt isdescribed using thermogravimetry (TG) and differential scanning calorimetry (DSC). TG curves inN2 and air, were obtained for alginic acid showed two decomposition steps attributed to loss of waterand polymer decomposition respectively. The sodium alginate decomposed in three steps. The firstattributed to water loss, followed by the formation of a carbonaceous residue and finally the Na2CO3.DSC curves presented peaks in agreement with the TG data. In the IR alginic acid presented bands at1730 and 1631 cm-1, while sodium alginate presented a doublet at 1614 e 1431 cm-1, evidencing thepresence of salified carboxyl groups. 2004 artículo científico 0100-4670 https://www.redalyc.org/articulo.oa?id=42929209 en http://www.redalyc.org/revista.oa?id=429 Eclética Química application/pdf Universidade Estadual Paulista Júlio de Mesquita Filho Eclética Química (Brasil) Num.2 Vol.29 |
| format | Artículo científico |
| id | redalyc_42929209 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Universidade Estadual Paulista Júlio de Mesquita Filho |
| spellingShingle | Thermal behavior of alginic acid and its sodium salt E. T. G. Cavalheiro Química alginic acid thermogravimetry differential scanning calorimetry Thermal behavior of alginic acid and its sodium salt E. T. G. Cavalheiro J. P. Soares J. E. Santos G. O. Chierice Química alginic acid thermogravimetry differential scanning calorimetry An evaluation of hydration and thermal decomposition of HAlg and its sodium salt isdescribed using thermogravimetry (TG) and differential scanning calorimetry (DSC). TG curves inN2 and air, were obtained for alginic acid showed two decomposition steps attributed to loss of waterand polymer decomposition respectively. The sodium alginate decomposed in three steps. The firstattributed to water loss, followed by the formation of a carbonaceous residue and finally the Na2CO3.DSC curves presented peaks in agreement with the TG data. In the IR alginic acid presented bands at1730 and 1631 cm-1, while sodium alginate presented a doublet at 1614 e 1431 cm-1, evidencing thepresence of salified carboxyl groups. 2004 artículo científico 0100-4670 https://www.redalyc.org/articulo.oa?id=42929209 en http://www.redalyc.org/revista.oa?id=429 Eclética Química application/pdf Universidade Estadual Paulista Júlio de Mesquita Filho Eclética Química (Brasil) Num.2 Vol.29 |
| title | Thermal behavior of alginic acid and its sodium salt |
| topic | Química alginic acid thermogravimetry differential scanning calorimetry |
| url | https://www.redalyc.org/articulo.oa?id=42929209 |