Preparation of Dissolving Pulp Made from Poplar Residual Slabs and Effect of Xylanase Post-treatment on Its Reactivity
| Autor: | Chaojun Wu, Lijuan Bing, Dongmei Yu, Ronggang Li, Shufang Zhou |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | BioResources, Vol 10, Iss 1, Pp 423-431 (2014) |
| Druh dokumentu: | article |
| ISSN: | 1930-2126 47003472 |
| DOI: | 10.15376/biores.10.1.423-431 |
| Popis: | The production of dissolving pulp from poplar wood residual slabs was investigated. The residual slab chips were initially prehydrolyzed and subsequently pulped by the kraft process; the resulting brownstock was bleached using a totally chlorine-free (TCF) sequence to full brightness. The pulp contained low pentosans and high α-cellulose content, and the pulp had high reactivity. Its hemicellulose content, reactivity, and degree of polymerization were within acceptable levels for a rayon-grade dissolving pulp. Thus, the residual slabs from poplar can be regarded as a viable raw material for dissolving pulp production. The reactivity of this dissolving pulp was drastically decreased after the xylanase post-treatment, which can slightly lower the pentosans levels. Simultaneously, the crystallinity index of the resulting pulp obviously decreased after xylanase post-treatment. |
| Databáze: | Directory of Open Access Journals |
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