Analyzes of pulp for dissolving

Purpose

In the viscose pilot together with the analyzes below, individual pulps, as well as the suitability of different cellulose mixtures for viscose production can be evaluated. You can do screening experiments to investigate the effect of different process parameters on different dissolving celluloses and test different how well a cellulose works at given process settings. It is also possible to evaluate different process chemicals, test different additives for fiber properties and so on.

Method

Analysis Package for pulp

• α-, β- och γ-cellulose – A widely used course measurement of the distribution of the degree of polymerisation (DP) of the pulp. High values of α-cellulose is seen as favourable.
• Acetone Extract – Low content of material extracted with acetone is favourable, but constant levels can be more preferable to ensure stabile processing. Many surface active additives will show up here.
• Carbonhydrates –Characterisation of the sugar moieties of which the pulp consists, which provides information about e.g. the hemicellulose content.
• Ash content – Measurement of the inorganic content in the pulp.
• Metals (Ca, Mg, Mn, Fe, Cu) – Measurement of the metal content in the pulp (specifically those found to have effect on the processability).
• SiO₂ content –Often measured on pulps to ensure levels are below a set threshold, as too much silica can disturb the spinning.
• Lignin content (Klason or acid soluble) – Measurement of the lignin content of the pulp.
• Molecule weight distribution

Deliveries

Report according to agreement with customer.