Updated: 2013-04-22
The main focus of research is to improve quality and functionality of fibre, paper and novel materials, based on detailed knowledge about morphological and chemical fibre characteristics. In this respect we have developed and established a series of techniques for chemical characterisation.
Contact: Ingebjørg Leirset.
Selected Methods
| Water: | |
| Extractive content: | |
| Gravimetric determination. | PFI-method-05-P-15 |
| Quantitative analysis, group separation. | PFI-method-05-P-13 |
| Quantitative analysis , single components. | PFI-method-05-P-16 |
| Carbohydrates: | |
| Total carbohydrates, the phenol-sulphuric acid method. | PFI-method-05-P-11 |
| Hemicelluloses and uronic acid, methanolysis. | PFI-method-05-P-12 |
| Quantitative composition, cellulose and hemicellulose. | PFI-method-05-P-17 |
| Reducing sugars, Nelsons method. | PFI-method-05-P-18 |
| Lignin: | |
| Compounds in the water phase after MTBE-extraction. | PFI-method-05-P-19 |
| Other water analyses: | |
| COD Dr.Lange: Determination of chemical oxygen demand. | PFI-method-05-P-20 |
| Particle size. | PFI-method-05-P-21 |
| Colour. | NS 4787 |
| Suspended matter and residue on ignition. | NS 4733 |
| Dry content and residue on ignition. | NS 4764 |
| pH. | NS 4720 |
| Conductivity. | NS 4721 |
| Pulp and paper: | |
| Extractive content: | |
| Gravimetric determination – Acetone. | SCAN-CM 49:03 |
| Gravimetric determination – Lipophilic matter. | SCAN-CM 67:03 |
| Quantitative analysis, group separation. | PFI-method-05-P-13 |
| Quantitative analysis , single components. | PFI-method-05-P-22 |
| Carbohydrates: | |
| Hemicelluloses and uronic acid, methanolysis. | PFI-method-05-P-12 |
| Quantitative composition, cellulose and hemicellulose. | PFI-method-05-P-23 |
| Lignin: | |
| Acid insoluble (Klason) and acid soluble lignin. | PFI-method-05-P-24 |
| Charge: | |
| Total charge. | PFI-method-05-P-25 |
| Total charge – Total acidic group content. | SCAN CM 65:02 |
| Surface charge. | PFI-method-05-P-26 |
| Other analysis: | |
| Sulfonic acid. | PFI-method-05-P-27 |
| Volatile compounds: (based on “purge & trap”-GC/MS). | PFI-method |
| Dry residue, HR73 Moisture Analyzer (balance). | PFI-method-05-P-A-02 |
| Ash, 525°C. | ISO 1762 |
| Deposits: Quantitative analysis – py-GC/MS and FT-IR. | |
| MFC-films: OTR, oxygen transmission rate. | PFI-method-05-P-28 |