期刊
CARBOHYDRATE POLYMERS
卷 136, 期 -, 页码 1281-1287出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.10.015
关键词
Cotton; Dissolving pulp; Kraft pulp; Acid hydrolysis; LODP; Hornification
资金
- Mistra-The Swedish Foundation for Strategic Environmental Research
- Swedish Foundation Sodra Skogsagarna Stiftelse for Forskning, Utveckling och Utbildning
The behaviour of different cellulosic fibres during acid hydrolysis has been investigated and the levelling-off degree of polymerisation (LODP) has been determined. The study included a bleached kraft pulp (both never-dried and once-dried) and two dissolving pulps (once-dried). Additionally, cotton cellulose from new cotton sheets and sheets discarded after long-time use was studied. Experimental results from the investigation, together with results found in literature, imply that ultrastructural differences between different fibres affect their susceptibility towards acid hydrolysis. Drying of a bleached kraft pulp was found to enhance the rate of acid hydrolysis and also result in a decrease in LODP. This implies that the susceptibility of cellulosic fibres towards acid hydrolysis is affected by drying-induced stresses in the cellulose chains. In cotton cellulose, it was found that use and laundering gave a substantial loss in the degree of polymerisation (DP), but that the LODP was only marginally affected. (c) 2015 The Authors. Published by Elsevier Ltd.
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