| Literature DB >> 25843847 |
Dong Cheng1, Yangbing Wen2, Lijuan Wang1, Xingye An1, Xuhai Zhu1, Yonghao Ni3.
Abstract
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 5wt% (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.Entities:
Keywords: Adsorption; Cellulose nano-crystals (CNC); Polyethylene glycol (PEG); Re-dispersity
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Year: 2015 PMID： 25843847 DOI： 10.1016/j.carbpol.2015.01.035
Source DB: PubMed Journal: Carbohydr Polym ISSN： 0144-8617 Impact factor: 9.381