Influence of reaction parameters on the depolymerization of H 2 SO 4 -impregnated cellulose in planetary ball mills
| Autor: | Achim Stolle, Robert Schmidt, Sindy Fuhrmann, Lothar Wondraczek |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Chemical substance High Energy Physics::Lattice General Chemical Engineering 010402 general chemistry complex mixtures 01 natural sciences law.invention High Energy Physics::Theory chemistry.chemical_compound Magazine law Cellulose Solubility Ball mill 010405 organic chemistry Depolymerization digestive oral and skin physiology technology industry and agriculture food and beverages respiratory tract diseases 0104 chemical sciences Chemical engineering chemistry Ball (bearing) Science technology and society |
| Zdroj: | Powder Technology. 288:123-131 |
| ISSN: | 0032-5910 |
| DOI: | 10.1016/j.powtec.2015.11.002 |
| Popis: | The depolymerization of acid-impregnated cellulose in planetary ball mills was investigated under the perspective of the influence of reaction parameters. Several process, technological and chemical parameters were examined. It was found that with a higher rotation frequency νrot, smaller milling balls and a milling ball filling degree ΦMB of approximately 0.3, the highest solubility could be reached and the milling time could be reduced. The use of milling vessels with larger diameter was beneficial. Variation of the milling ball material showed huge influence and a linear correlation between solubility and density of the milling ball material was observed. Kinetic investigations indicate that the degradation of the impregnated cellulose follows a first order model. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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