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Homogeneous isolation of nanocelluloses by controlling the shearing force and pressure in microenvironment
journal contributionposted on 2014-11-26, 00:00 authored by J Li, Y Wang, X Wei, F Wang, D Han, Q Wang, Lingxue KongLingxue Kong
Nanocelluloses were prepared from sugarcane bagasse celluloses by dynamic high pressure microfluidization (DHPM), aiming at achieving a homogeneous isolation through the controlling of shearing force and pressure within a microenvironment. In the DHPM process, the homogeneous cellulose solution passed through chambers at a higher pressure in fewer cycles, compared with the high pressure homogenization (HPH) process. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) demonstrated that entangled network structures of celluloses were well dispersed in the microenvironment, which provided proper shearing forces and pressure to fracture the hydrogen bonds. Gel permeation chromatography (GPC), CP/MAS 13C NMR and Fourier transform infrared spectroscopy (FT-IR) measurements suggested that intra-molecular hydrogen bonds were maintained. These nanocelluloses of smaller particle size, good dispersion and lower thermal stability will have great potential to be applied in electronics devices, electrochemistry, medicine, and package and printing industry. © 2014 Elsevier Ltd.
Pagination388 - 393
Publication classificationC Journal article; C1 Refereed article in a scholarly journal
Copyright notice2014, Elsevier
1-Butyl-3-methylimidazolium chloride (PubChem CID: 2734161)1-Chlorobutane (PubChem CID: 8005)1-Methylimidazole (PubChem CID: 1390)Dynamic high pressure microfluidizationHigh pressure homogenizationHomogeneous isolationLithium chloride (PubChem CID: 433294)Methanol (PubChem CID: 887)MicroenvironmentN, N-dimethylacetamide (PubChem CID: 31374)NanocelluloseNitric acid (PubChem CID: 944)Potassium bromide (PubChem CID: 253877)Sodium hydroxide (PubChem CID: 14798)Sulfuric acid (PubChem CID: 1118)Science & TechnologyPhysical SciencesChemistry, AppliedChemistry, OrganicPolymer ScienceChemistryNanocellulose ChemicalIONIC LIQUIDREGENERATED CELLULOSEPOLYMERIZATIONDISSOLUTIONOXIDATIONSOLVENTOrganic Chemistry