| dc.creator | Lisperguer, Justo | |
| dc.creator | Saravia, Yanina | |
| dc.creator | Vergara, Emilio | |
| dc.date | 2017-05-29 | |
| dc.date.accessioned | 2019-11-13T15:11:24Z | |
| dc.date.available | 2019-11-13T15:11:24Z | |
| dc.identifier | http://www.jcchems.com/index.php/JCCHEMS/article/view/107 | |
| dc.identifier.uri | https://revistaschilenas.uchile.cl/handle/2250/112540 | |
| dc.description | The objective of this study was to evaluate the tannin extraction potential taken from the bark of Acacia dealbata. This tannins were extracted with water at 90°C. An extraction yield of 17.2% solids with a Stiasny number of 82% was obtained from the bark extract of Acacia dealbata. The structure was studied by Fourier transform infrared spectroscopy (FTIR). The thermal behavior of tannins was studied by DSC and a glass- transition temperature (Tg) of 116,77°C was determined. The thermal stability of tannins was studied by TGA. At 196.91°C the decomposition is 3.7% and the maximum of the weight loss rate (DTG) of the degradation was 257.77°C. The curing with formaldehyde showed an exotherm reaction in the range of 100-120°C, which is similar to tannins of other species. | en-US |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Sociedad Chilena de Química | en-US |
| dc.relation | http://www.jcchems.com/index.php/JCCHEMS/article/view/107/93 | |
| dc.rights | Copyright (c) 2017 Justo Lisperguer, Yanina Saravia, Emilio Vergara | en-US |
| dc.rights | https://creativecommons.org/licenses/by-nc-sa/4.0 | en-US |
| dc.source | Journal of the Chilean Chemical Society; Vol 61 No 4 (2016): Journal of the Chilean Chemical Society | en-US |
| dc.source | 0717-9707 | |
| dc.source | 0717-9324 | |
| dc.subject | Tannins | en-US |
| dc.subject | Acacia dealbata bark | en-US |
| dc.subject | Structure of tannins | en-US |
| dc.subject | Thermal behavior | en-US |
| dc.title | STRUCTURE AND THERMAL BEHAVIOR OF TANNINS FROM Acacia dealbata BARK AND THEIR REACTIVITY TOWARD FORMALDEHYDE | en-US |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
