Contact person
Nadine Hollinger
Forsknings- och utvecklingsingenjör
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Analyzes of Cellulose for Dissolving Pulp
By using dissolving pulp as a raw material, textile companies can play an active role in the transition towards a more sustainable and circular economy. By investing in research and development of dissolving fibers and production methods, the industry can contribute to promoting a more sustainable future for textile production and consumption.
Purpose
The quality of dissolving pulp is crucial for the resulting fiber's properties, such as strength, elasticity, and color fastness. Therefore, it is important to carefully characterize and test the pulp before it is used in the production process to ensure that it meets specific requirements and standards for the intended use.
RISE has extensive experience and expertise in the characterization and testing of dissolving pulp and can assist companies in the textile and cellulose industries in evaluating and optimizing their raw materials for the production of high-quality fibres and products.
In the viscose pilot plant, along with the analyses mentioned below, individual pulps, as well as the suitability of various cellulose blends for viscose production, can be evaluated. Screening experiments can be conducted to investigate the influence of different process parameters on various dissolving pulps and to test how well a cellulose performs under given process settings. It is also possible to evaluate different process chemicals, test various additives for fibre properties, and so on.
Analysis Package for pulp
Common pulp analyses:
- 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
Delivery
RISE offers a report that includes data in Excel format and relevant images and diagrams. It is carefully compiled using standard methods for the conducted analyses. The report also includes an assessment of measurement uncertainty to ensure the reliability of the presented results. All relevant parameters significant to the specific analysis are included to provide a comprehensive picture of the situation. Additionally, detailed comments and explanations are provided to offer further insight and understanding of the presented data.
Standard Report (Quotation):
RISE provides a comprehensive report where results are presented in a clear manner through concise but informative sections with clear diagrams and tables. This report structure is designed to make it easy for customers and stakeholders to quickly grasp the presented results without having to delve into extensive texts.
In-depth Report (Quotation):
If desired, there is an option for a more detailed report on quotation where RISE has the capacity to create a more detailed scientific report based on the results and background information provided by the customer. This report may include an in-depth analysis of data, extensive discussions on methodology and results, as well as a thorough assessment of relevant factors and contexts. By utilizing the latest research and expertise in the field, RISE can provide a thorough understanding of the observed results and their implications.
More information
För viskostillverkarna är oupplösta partiklar i viskoslösningen ett problem eftersom de kan sätta igen dels filtren av viskoslösningen och dels dysorna i spinnbadet.
Vi har en komplett kedja med pilotutrustningar från ved till färdig viskostråd och uppdragen inom detta område ökar för oss.
Apparaten kan förutom att mäta partiklar, även mäta celler, exempelvis jästceller.
Partikelstorleksmätaren Multisizer 4 från Beckman Coulter fungerar enligt Coulter-principen och kan detektera partiklar i storleksintervallet 0,4 till 170 µm, men den kan med flera tillsatser mäta upp till 1600 µm.
Molekylviktsfördelning i cellulosaprodukter
Molekylviktsfördelning är en viktig parameter som ger insikt i den kemiska strukturen och egenskaperna hos en given polymer eller substans.
RISE analyserar molekylviktsfördelning på till exempel massa, karboxylmetyl cellulosa, polyakrylat, stärkelse, biocider, lignin, svartlut och hemicellulosa.
