COMBINATION OF ENZYMATIC, MECHANICAL AND ULTRASONIC TREATMENTS FOR IMPROVEMENT OF THE PROPERTIES OF SECONDARY PULPS
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| Format: | Artículo científico |
| Sprache: | en |
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Universidade Federal de Lavras
2013
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| _version_ | 1876486155501830144 |
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| author | Juliana Cristina da Silva |
| author_facet | Juliana Cristina da Silva |
| contents | COMBINATION OF ENZYMATIC, MECHANICAL AND ULTRASONIC TREATMENTS FOR IMPROVEMENT OF THE PROPERTIES OF SECONDARY PULPS Juliana Cristina da Silva Rubens Chaves de Oliveira Larisse Ribas Batalha Mauro Manfredi Agrociencias refining Recycling ultrasound paper properties This study evaluated the property recovery capability of handsheets formed from secondary fibers by combining different techniques. To attain that, pulps derived from post-consumer cardboard scrap were subjected to various refining intensities respectively in a PFI mill (0, 400, 800 and 1200 revolutions) and ultrasound (0, 10, 20 and 30 minutes), followed by enzymatic treatments with enzymes Cellulase, Hemicellulase, Mixture 1 and Mixture 2 (both mixtures composed of cellulase and hemicellulas e). The papermaking potential of the pulps was evaluated by means of physical and mechanical tests on the resulting paper after the relevant treatments. It was found that both the combination of PFI mill refining with enzymatic treatments and the combination of ultrasound with enzymatic treatments were effective in improving paper properties. It was also found that interfiber bonding properties such as tensile index and ring crush strength had greater increases, in relation to the initial pulp, in pulps derived from the combined PFI mill refining with enzymatic treatments. As for intrinsic fiber strength properties, such as tear resistance, had greater increases in pulps derived from the combined ultrasound with enzymatic treatments. 2013 artículo científico 0104-7760 https://www.redalyc.org/articulo.oa?id=74429306016 en http://www.redalyc.org/revista.oa?id=744 CERNE application/pdf Universidade Federal de Lavras CERNE (Brasil) Num.4 Vol.19 |
| format | Artículo científico |
| id | redalyc_74429306016 |
| institution | Redalyc |
| language | en |
| publishDate | 2013 |
| publisher | Universidade Federal de Lavras |
| spellingShingle | COMBINATION OF ENZYMATIC, MECHANICAL AND ULTRASONIC TREATMENTS FOR IMPROVEMENT OF THE PROPERTIES OF SECONDARY PULPS Juliana Cristina da Silva Agrociencias refining Recycling ultrasound paper properties COMBINATION OF ENZYMATIC, MECHANICAL AND ULTRASONIC TREATMENTS FOR IMPROVEMENT OF THE PROPERTIES OF SECONDARY PULPS Juliana Cristina da Silva Rubens Chaves de Oliveira Larisse Ribas Batalha Mauro Manfredi Agrociencias refining Recycling ultrasound paper properties This study evaluated the property recovery capability of handsheets formed from secondary fibers by combining different techniques. To attain that, pulps derived from post-consumer cardboard scrap were subjected to various refining intensities respectively in a PFI mill (0, 400, 800 and 1200 revolutions) and ultrasound (0, 10, 20 and 30 minutes), followed by enzymatic treatments with enzymes Cellulase, Hemicellulase, Mixture 1 and Mixture 2 (both mixtures composed of cellulase and hemicellulas e). The papermaking potential of the pulps was evaluated by means of physical and mechanical tests on the resulting paper after the relevant treatments. It was found that both the combination of PFI mill refining with enzymatic treatments and the combination of ultrasound with enzymatic treatments were effective in improving paper properties. It was also found that interfiber bonding properties such as tensile index and ring crush strength had greater increases, in relation to the initial pulp, in pulps derived from the combined PFI mill refining with enzymatic treatments. As for intrinsic fiber strength properties, such as tear resistance, had greater increases in pulps derived from the combined ultrasound with enzymatic treatments. 2013 artículo científico 0104-7760 https://www.redalyc.org/articulo.oa?id=74429306016 en http://www.redalyc.org/revista.oa?id=744 CERNE application/pdf Universidade Federal de Lavras CERNE (Brasil) Num.4 Vol.19 |
| title | COMBINATION OF ENZYMATIC, MECHANICAL AND ULTRASONIC TREATMENTS FOR IMPROVEMENT OF THE PROPERTIES OF SECONDARY PULPS |
| topic | Agrociencias refining Recycling ultrasound paper properties |
| url | https://www.redalyc.org/articulo.oa?id=74429306016 |