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RESEARCH PRODUCT
Synthesis of Nanofibrillated Cellulose by Combined Ammonium Persulphate Treatment with Ultrasound and Mechanical Processing
Inese FilipovaVelta FridrihsoneUgis CabulisAgris Berzinssubject
Thermogravimetric analysisMaterials scienceoxidationGeneral Chemical EngineeringSonication02 engineering and technology010402 general chemistry01 natural sciencesArticleNanocelluloselcsh:ChemistryCrystallinitychemistry.chemical_compoundZeta potentialGeneral Materials ScienceCellulosenanocellulose021001 nanoscience & nanotechnologyhigh shear mixer0104 chemical scienceslcsh:QD1-999Kraft processchemistryChemical engineeringAmmonium persulfateammonium persulfatenanofibrils0210 nano-technologydescription
Ammonium persulfate has been known as an agent for obtaining nanocellulose in recent years, however most research has focused on producing cellulose nanocrystals. A lack of research about combined ammonium persulfate oxidation and common mechanical treatment in order to obtain cellulose nanofibrils has been identified. The objective of this research was to obtain and investigate carboxylated cellulose nanofibrils produced by ammonium persulfate oxidation combined with ultrasonic and mechanical treatment. Light microscopy, atomic force microscopy (AFM), powder X-Ray diffraction (PXRD), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and Zeta potential measurements were applied during this research. The carboxylated cellulose suspension of different fractions including nanofibrils, microfibrils and bundles were produced from bleached birch Kraft pulp fibers using chemical pretreatment with ammonium persulfate solution and further defibrillation using consequent mechanical treatment in a high shear laboratory mixer and ultrasonication. The characteristics of the obtained nanofibrils were: diameter 20&ndash
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-08-21 | Nanomaterials |