Obtencion de acetato de celulosa a partir de desechos agroindustriales
The purpose of the present work was to find alternative uses for agricultural wastes. Acetylation of cellulose from pineapple peel, rice peel and saw dust was performed.The acetylation reaction was carried out with acetic anhydride, acetic acid and sulfuric acid as catalyst.Products with yields betw...
| Autores: | ; ; |
|---|---|
| Tipo de documento: | Artigo |
| Estado: | Published version |
| Data de publicação: | 1989 |
| País: | Costa Rica |
| Recursos: | UNA |
| Repositório: | Portal de Revistas UNA |
| Idioma: | Espanhol |
| OAI Identifier: | oai:ojs.www.una.ac.cr:article/5419 |
| Acesso em linha: | https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/5419 |
| Nível de acesso: | Acesso aberto |
| Palavra-chave: | acetato celulosa desechos agroindustriales |
| _version_ | 1878655366772817920 |
|---|---|
| author | Sibaja Ballestero, María del Rosario |
| author2 | Moya Portuguéz, Manuel E. Durán Chavarría, Marlen |
| author2_role | author author |
| author_browse | Durán Chavarría, Marlen Moya Portuguéz, Manuel E. Sibaja Ballestero, María del Rosario |
| author_facet | Sibaja Ballestero, María del Rosario Moya Portuguéz, Manuel E. Durán Chavarría, Marlen |
| author_role | author |
| collection | Portal de Revistas UNA |
| description | The purpose of the present work was to find alternative uses for agricultural wastes. Acetylation of cellulose from pineapple peel, rice peel and saw dust was performed.The acetylation reaction was carried out with acetic anhydride, acetic acid and sulfuric acid as catalyst.Products with yields between 46% and 74% and a substitution degree of 2.4 – 2.7 were obtained.The IR spectra of these products were similar to the industrial one. They have good solubility in acetone-water mixtures and the softening temperatures were lower than for the industrial acetate. The cellulose from pineapple waste gave the best results. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | CR_ed6a1b7fae720aa90794de597a5a8deb |
| institution | UNA |
| instname_str | Universidad Nacional de Costa Rica |
| language | spa |
| network_acronym_str | CR |
| network_name_str | Costa Rica |
| oai_identifier_str | oai:ojs.www.una.ac.cr:article/5419 |
| publishDate | 1989 |
| publishDateSort | 1989 |
| publisher | Universidad Nacional, Costa Rica |
| publisherStr | Universidad Nacional, Costa Rica |
| reponame_str | Portal de Revistas UNA |
| spelling | Obtencion de acetato de celulosa a partir de desechos agroindustriales Obtención de acetato de celulosa a partir de desechos agroindustriales Sibaja Ballestero, María del Rosario Moya Portuguéz, Manuel E. Durán Chavarría, Marlen acetato celulosa desechos agroindustriales The purpose of the present work was to find alternative uses for agricultural wastes. Acetylation of cellulose from pineapple peel, rice peel and saw dust was performed.The acetylation reaction was carried out with acetic anhydride, acetic acid and sulfuric acid as catalyst.Products with yields between 46% and 74% and a substitution degree of 2.4 – 2.7 were obtained.The IR spectra of these products were similar to the industrial one. They have good solubility in acetone-water mixtures and the softening temperatures were lower than for the industrial acetate. The cellulose from pineapple waste gave the best results. Con el objeto de buscar nuevos usos a algunos desechos de la agroindustria, se sintetizó acetato de celulosa a partir de celulosa obtenida de cáscara de piña, cascarilla de arroz y aserrín de madera. Los sustratos se modificaron por acetilación con anhídrido acético, ácido acético y ácido sulfúrico como catalizador: se obtuvieron los productos con rendimientos situados entre 46% y 74% y grados de situación entre 2.4 y 2.7.El espectro IR de los acetatos sintetizados fue similar al del producto comercial, tuvieron una buena solubilidad en mezclas acetona-agua y una temperatura de ablandamiento menor al acetato de la casa Merck.Los mejores resultados se obtuvieron cuando se utilizó celulosa de cáscaras de piña como sustrato. Universidad Nacional, Costa Rica https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/5419 |
| spellingShingle | Obtencion de acetato de celulosa a partir de desechos agroindustriales Sibaja Ballestero, María del Rosario acetato celulosa desechos agroindustriales |
| status_str | publishedVersion |
| title | Obtencion de acetato de celulosa a partir de desechos agroindustriales |
| title_full | Obtencion de acetato de celulosa a partir de desechos agroindustriales |
| title_fullStr | Obtencion de acetato de celulosa a partir de desechos agroindustriales |
| title_full_unstemmed | Obtencion de acetato de celulosa a partir de desechos agroindustriales |
| title_short | Obtencion de acetato de celulosa a partir de desechos agroindustriales |
| title_sort | Obtencion de acetato de celulosa a partir de desechos agroindustriales |
| topic | acetato celulosa desechos agroindustriales |
| topic_facet | acetato celulosa desechos agroindustriales |
| url | https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/5419 |