期刊
CARBOHYDRATE POLYMERS
卷 123, 期 -, 页码 157-163出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.01.035
关键词
Cellulose nano-crystals (CNC); Re-dispersity; Polyethylene glycol (PEG); Adsorption
资金
- Tianjin Municipal Science and Technology Commission [12ZCZDGX01100]
In this work, the adsorption of polyethylene glycol (PEG) onto cellulose nano-crystals (CNC) was investigated for preparing re-dispersible dried CNC. Results showed that the re-dispersity of CNC in water can be significantly enhanced using a PEG1000 dosage of 5 wt% (based on the dry weight of CNC). The elemental analysis confirmed the adsorption of PEG onto the CNC surface. Transmission electron microscopy (TEM) was used to characterize the dry powder and indicated that the irreversible agglomeration of CNC after drying was essentially eliminated based on the PEG adsorption concept. Thermo-gravimetric analysis (TGA) and X-ray diffraction (XRD) suggested that CNC crystallinity and thermal stability were not affected by the adsorption of PEG. Thus, the adsorption of PEG has great potential for producing re-dispersible powder CNC. (C) 2015 Elsevier Ltd. All rights reserved.
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