Publications by authors named "A Blume"
Article Synopsis
- Active fillers like carbon black and silica enhance the mechanical and viscoelastic properties of rubber through various interactions, affecting the compound's behavior.
- The study examines the effects of different silica loadings on three types of solution styrene-butadiene rubbers (SSBR) and one butadiene rubber (BR), finding that higher filler loading increases viscosity and hardness but can also worsen properties in BR due to weak polymer-filler interactions.
- An optimum filler loading was identified, where mechanical properties improved up to a point before declining, influenced by the type of rubber, amount of filler, and temperature.
In-rubber properties of vulcanizates deteriorate in the presence of incorporated recycled ground rubber (GR). This behavior is partly explained by a possible diffusion of sulfur from the rubber matrix into the GR. Therefore, the sulfur concentration and, thus, the crosslink density in the matrix are reduced.
View Article and Find Full Text PDFSince Charles Goodyear discovered the method of sulfur curing Natural Rubber in 1839, many studies have been carried out to understand its mechanism. Currently, the broadly accepted mechanism includes an activated accelerator complex formed by Zinc oxide, stearic acid, accelerators and sulfur. Furthermore, it is also broadly accepted that the coupling of the sulfur to the polymer takes place in the allylic position to the double bond.
View Article and Find Full Text PDFObjectives: Since June 2022, there has been a rise in the number of ceftriaxone-resistant Neisseria gonorrhoeae cases detected in England (n = 15), of which a third were XDR. We describe the demographic and clinical details of the recent cases and investigate the phenotypic and molecular characteristics of the isolates. For a comprehensive overview, we also reviewed 16 ceftriaxone-resistant cases previously identified in England since December 2015 and performed a global genomic comparison of all publicly available ceftriaxone-resistant N.
View Article and Find Full Text PDF