Short-term steam treatment of MFC gel with and without water-soluble cellulose derivative
| Autor: | Isto Heiskanen, Kaj Backfolk, Salla Hiltunen |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
technology industry and agriculture Hydrothermal treatment Forestry macromolecular substances 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences chemistry.chemical_compound Water soluble chemistry 010608 biotechnology General Materials Science Cellulose 0210 nano-technology Derivative (chemistry) Nuclear chemistry |
| Zdroj: | Nordic Pulp & Paper Research Journal. 34:10-18 |
| ISSN: | 2000-0669 0283-2631 |
| DOI: | 10.1515/npprj-2018-0062 |
| Popis: | Microfibrillated cellulose (MFC) with and without added CMC was exposed to short-term dynamic thermal treatment using a steam jet cooker. The effects of the elevated temperature (130 °C, ∼3 bar) and shear forces on the rheology, crystallinity index, UV/VIS adsorption and water retention were measured. Jet cooking increased the viscosity and gel strength of the MFC and MFC/CMC mixture but with CMC alone a slight decrease in viscosity was observed. The water retention capacity and crystalline indices of the MFC were not greatly affected by the short-term thermal treatment and shear forces, although a slight increase in the UV/VIS absorbance was observed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|