期刊
CARBOHYDRATE POLYMERS
卷 151, 期 -, 页码 223-229出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.05.080
关键词
Waste newspaper; Ionic liquid; Cellulose based film; Cellulose
资金
- National Science Foundation of China [51425307, 21374126, 21174151]
- Program of Taishan Industry Leading Talents (Shandong Province)
Waste newspapers, composed of cellulose (>60 wt%), lignin (-15 wt%), hemicellulose (-10 wt%) and other additives, are one kind of low-cost, easily collected and abundant resources. In order to get value-added products from this waste, in this work an attempt was made to directly convert waste newspapers into cellulose-based films by employing an ionic liquid 1-allyl-3-methylimidazolium chloride (AmimCl) as a solvent. Most of the organic substances in this waste were dissolved quickly in AmimCl under mild conditions, and then coagulated and dried. Although containing lignin, hemicellulose and inorganic additives, the regenerated cellulose-based films were smooth, compact and semi-transparent, and exhibited good mechanical properties. If the newspaper/AmimCl solution was filtered to remove undissolved inorganic substances, the regenerated films became transparent and had a tensile strength of 80 MPa. Thus, this work provides a new, simple and highly efficient way to achieve a high-valued utilization of waste newspapers for packaging and wrapping. (C) 2016 Elsevier Ltd. All rights reserved.
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