Green Preparation of Cellulose Aerogel from Waste Newspapers and Its Performance in Oil Spill Cleaningc

JIN Chunde; HAN Shenjie; WANG Jin; WANG Zhe

doi:10.3981/j.issn.1000-7857.2014.h1.005

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Science & Technology Review ›› 2014, Vol. 32 ›› Issue (4-5) : 40-44. DOI: 10.3981/j.issn.1000-7857.2014.h1.005

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Green Preparation of Cellulose Aerogel from Waste Newspapers and Its Performance in Oil Spill Cleaningc

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School of Engineering, Zhejiang Agricultural & Forestry University, Hangzhou 311300, China

Abstract

To obtain cheap and clean waste newspaper based cellulose aerogel (WNCA) with water and oil absorption properties, the 1-allyl-3-methylimidazolium chloride ionic liquid（AmImCl）was employed to dissolve waste newspapers without any pre-treatments. A pure cellulose hydrogel was acquired via solvent exchange from deionized water to ethanol, followed by solvent exchange from ethanol to tert-butanol, and after freeze-drying, flexible WNCA was prepared. The morphological characteristics, crystalline properties and crystallinity of the obtained WNCA were analyzed using Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and X-Ray Diffraction (XRD). The results showed that WNCA has a favorable porous structure of three-dimensional networks. The crystalline type of the WNCA is the cellulose Ⅰ type, and the crystallinity reaches 62.6%, increasing by 12.8% as compared with that of the raw material. The aerogel is able to absorb water and waste oil weighing 18-20 times of its own weight, and 99.8% of liquid can be removed through simple extrusion, indicating it has satisfactory recycling performance. Meanwhile, the WNCA shows good mechanical properties and can bounce. All reagents used in this study are environmentally friendly, providing clues for green preparation of aerogels.

Key words

aerogel / waste newspaper / ionic liquid / oil absorption

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JIN Chunde, HAN Shenjie, WANG Jin, WANG Zhe. Green Preparation of Cellulose Aerogel from Waste Newspapers and Its Performance in Oil Spill Cleaningc[J]. Science & Technology Review, 2014, 32(4-5): 40-44 https://doi.org/10.3981/j.issn.1000-7857.2014.h1.005

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