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Knowledge on bitumen chemistry and structures is of fundamental importance to understand performance differences of asphalt materials.
Recently, Nynas bitumen research team has published an article entitled “Structural and Chemical Analysis of Bitumen Using Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS)” in Fuel, a leading journal for publishing primary research work in this field.
It has been shown that the structures formed on the bitumen surface are closely related to the wax content and that these structures, as well as the surface in general, are enriched in wax-related compounds. For the wax-free bitumen, the surface is characterized by a homogeneous distribution without chemical variations or phase structures and by a stronger signal intensity from aromatic compounds. When adding wax to the wax-free bitumen, extensive wax segregation occurs, but differently from the natural waxy bitumen, no bee structures are observed. Furthermore, fracture surfaces of all the wax-containing samples reveal circular structures, which are distinctly different from those observed on the original surfaces. The obtained chemical knowledge on bitumen surfaces and phase structures is of fundamental importance to understand performance differences of this type of materials.
This research work was carried out in collaboration with SP Technical Research Institute of Sweden.
Read full paper via the web-link:
Today, the decision to adopt Nynas composition from 30 November 2020 became final in Södertörn District Court. This means that Nynas company reorganisation is formally completed and that Nynas creditors will be paid in accordance with the composition agreement.Read more about Nynas reorganisation completed
Nynas formally exits the reorganisationRead more about After decision in the Court of Appeal
The district court's decision of 30 November to confirm the composition in Nynas AB's corporate reorganisation has been appealed by the Swedish Tax Agency on 21 December. Extraordinary reasons have since been applied based on approval of the administrators as of 22 December 2020 and Nynas has today paid in full to the Swedish Tax Agency and thus the Swedish Tax Agency no longer has any claim.Read more about Nynas reorganisation formally expected to be completed in January 2021