Effect of Dispersion and Bleaching on the Mechanical and Optical Properties of Deinked Recycled Pulp
In this study the effects of oxidative bleaching and mechanical dispersion in different conditions on the optical and mechanical properties of deinked recycled pulp was investigated. Industrial deinked pulp was treated in the different conditions, including dispersion, combined oxidative bleaching d...
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| Format: | Article |
| Language: | fas |
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Iranian Scientific Association of Wood and Paper Industries
2016-06-01
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| Series: | Iranian Journal of Wood and Paper Industries |
| Subjects: | |
| Online Access: | http://www.ijwp.ir/article_12982_517f752a52e27f64579ae948adadfb17.pdf |
| _version_ | 1818258979654991872 |
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| author | yahya hamzeh hamed sharifi taskouh hamidreza rudi shadman pourmousa |
| author_facet | yahya hamzeh hamed sharifi taskouh hamidreza rudi shadman pourmousa |
| author_sort | yahya hamzeh |
| collection | DOAJ |
| description | In this study the effects of oxidative bleaching and mechanical dispersion in different conditions on the optical and mechanical properties of deinked recycled pulp was investigated. Industrial deinked pulp was treated in the different conditions, including dispersion, combined oxidative bleaching during dispersion, and separate dispersion and then oxidative bleaching. Handsheet papers were made from obtained pulps and then scanned and taken photos were analyzed by Digimizer software, version 4.1.1.0 to analysis spot content. Optical and mechanical properties of obtained handsheets were determined and compared. Results indicated that mechanical dispersion decreased spot content and brightness and increased yellowing of the handsheets. Moreover, mechanical dispersion increased dry and wet tensile and burst strengths, water retention value (WRV), ash content and decreased tear strength of handsheet papers. This study revealed that combined dispersing and oxidative bleaching of de-inked pulp provided superior results in comparison to the separate dispersing and oxidative bleaching. |
| first_indexed | 2024-12-12T18:08:09Z |
| format | Article |
| id | doaj.art-2c86aa63f6674a169740dc276b3b325b |
| institution | Directory Open Access Journal |
| issn | 2008-9066 2423-3242 |
| language | fas |
| last_indexed | 2024-12-12T18:08:09Z |
| publishDate | 2016-06-01 |
| publisher | Iranian Scientific Association of Wood and Paper Industries |
| record_format | Article |
| series | Iranian Journal of Wood and Paper Industries |
| spelling | doaj.art-2c86aa63f6674a169740dc276b3b325b2022-12-22T00:16:27ZfasIranian Scientific Association of Wood and Paper IndustriesIranian Journal of Wood and Paper Industries2008-90662423-32422016-06-0171334112982Effect of Dispersion and Bleaching on the Mechanical and Optical Properties of Deinked Recycled Pulpyahya hamzeh0hamed sharifi taskouh1hamidreza rudi2shadman pourmousa3Professor, Department of Wood and Paper Sciences and Technology, Faculty of Natural Resources, University of Tehran, Karaj,Iran.Graduated MSc., Faculty of Natural Resources, Department of Wood and Paper Sciences and Technology, University of Tehran, Karaj, Iran.Assistant Professor, Cellulose and Paper Technology Department, New Technologies and Energy Faculty, Shahid Beheshti University, Zirab, Iran.Assistant Professor, Faculty of Agriculture and Natural Resources, Department of Wood and Paper Science and Technology, Karaj Branch, Islamic Azad University, Karaj, Iran.In this study the effects of oxidative bleaching and mechanical dispersion in different conditions on the optical and mechanical properties of deinked recycled pulp was investigated. Industrial deinked pulp was treated in the different conditions, including dispersion, combined oxidative bleaching during dispersion, and separate dispersion and then oxidative bleaching. Handsheet papers were made from obtained pulps and then scanned and taken photos were analyzed by Digimizer software, version 4.1.1.0 to analysis spot content. Optical and mechanical properties of obtained handsheets were determined and compared. Results indicated that mechanical dispersion decreased spot content and brightness and increased yellowing of the handsheets. Moreover, mechanical dispersion increased dry and wet tensile and burst strengths, water retention value (WRV), ash content and decreased tear strength of handsheet papers. This study revealed that combined dispersing and oxidative bleaching of de-inked pulp provided superior results in comparison to the separate dispersing and oxidative bleaching.http://www.ijwp.ir/article_12982_517f752a52e27f64579ae948adadfb17.pdfDispergerde-inked pulpTissue PaperSpot contentOptical and Mechanical properties |
| spellingShingle | yahya hamzeh hamed sharifi taskouh hamidreza rudi shadman pourmousa Effect of Dispersion and Bleaching on the Mechanical and Optical Properties of Deinked Recycled Pulp Iranian Journal of Wood and Paper Industries Disperger de-inked pulp Tissue Paper Spot content Optical and Mechanical properties |
| title | Effect of Dispersion and Bleaching on the Mechanical and Optical Properties of Deinked Recycled Pulp |
| title_full | Effect of Dispersion and Bleaching on the Mechanical and Optical Properties of Deinked Recycled Pulp |
| title_fullStr | Effect of Dispersion and Bleaching on the Mechanical and Optical Properties of Deinked Recycled Pulp |
| title_full_unstemmed | Effect of Dispersion and Bleaching on the Mechanical and Optical Properties of Deinked Recycled Pulp |
| title_short | Effect of Dispersion and Bleaching on the Mechanical and Optical Properties of Deinked Recycled Pulp |
| title_sort | effect of dispersion and bleaching on the mechanical and optical properties of deinked recycled pulp |
| topic | Disperger de-inked pulp Tissue Paper Spot content Optical and Mechanical properties |
| url | http://www.ijwp.ir/article_12982_517f752a52e27f64579ae948adadfb17.pdf |
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