Solid-state properties of softwood lignin and cellulose isolated by a new acid precipitation method
| Autor: | Urve Paaver, Peep Veski, Karin Kogermann, Timo Repo, Jouko Yliruusi, Sirpa Vuorinen, Kalle Kirsimäe, Maija Hakola, Anna Penkina, Jyrki Heinämäki |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Softwood
02 engineering and technology Crystal structure Chemical Fractionation 010402 general chemistry complex mixtures 01 natural sciences Biochemistry Lignin Catalysis chemistry.chemical_compound Structural Biology Hardwood Organic chemistry Chemical Precipitation Cellulose Particle Size Molecular Biology fungi technology industry and agriculture Temperature food and beverages Water Pinus sylvestris General Medicine Hydrogen-Ion Concentration 021001 nanoscience & nanotechnology Wood 0104 chemical sciences Catalytic oxidation chemistry Chemical engineering Particle size Powders 0210 nano-technology |
| Zdroj: | International journal of biological macromolecules. 51(5) |
| ISSN: | 1879-0003 |
| Popis: | Solid-state and powder properties of softwood lignin and cellulose prepared by a new catalytic oxidation and acid precipitation method were characterized and compared with the commercial softwood and hardwood lignin and cellulose products. Catalytic pre-treated softwood lignin (CPSL) and cellulose (CPSC) were isolated from pine wood (Pinus sylvestris). CPSL with nearly micronized-scale particle size showed excellent powder flow and densification behavior due to the round shape and electrically minimum charged surface characteristics of particles. CPSL and the reference lignin studied were amorphous solids while CPSC exhibited a typical crystal lattice for cellulose I. In conclusion, physicochemical material properties of lignin and cellulose can be modified for biomedical and pharmaceutical applications with the present catalytic oxidation and acid precipitation method. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect