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- W2999129772 abstract "Cellulose nanocrystals (CNCs) are bio-derived, natively hydrophilic nanomaterials that disperse well in water accordingto their surface chemistry upon extraction. However, to be suspended in non-polar, hydrophobic media such as mostpolymers [1], the CNCs are chemically modified by reactions that are environmentally unfriendly and not cost-effectivefor the industry. The present work reports the preliminary findings of the non-covalent surface modification of CNCsusing polyethyleneimine (PEI), a common additive used in the paper industry [2], through a low-cost process andwithout any use of organic solvents. The successful surface modification was confirmed through different techniques,including Fourier transform infrared (FTIR) spectroscopy, X-ray Photoelectron Spectroscopy (XPS), Dynamic LightScattering (DLS) and Zeta Potential (ζ-potential) measurements. The CNC agglomerates formed in aqueous suspensionsas a result of the modification showed improved dispersion in toluene and were found to precipitate in deionized water.The turbidity measurements of the water suspensions of pristine and modified CNCs (mCNCs) were performed usingUV-Visible (UV-Vis) transmission spectroscopy." @default.
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- W2999129772 date "2018-01-01" @default.
- W2999129772 modified "2023-09-23" @default.
- W2999129772 title "Non-covalent surface modification of cellulose nanocrystals by polyethyleneimine" @default.
- W2999129772 hasPublicationYear "2018" @default.
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