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  • 101.
    Spilg, Leo
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Unscreened low tension cables scrape abrasion testing. Part 1. An interlaboratory study on scrape abrasion testing according to ISO DP 6722-1.1992Rapport (Refereegranskat)
  • 102.
    Svensson, Per-Ola
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Mätosäkerhet vid mekanisk provning av polymera materials: Nötning av PVC-mattor1998Rapport (Refereegranskat)
  • 103.
    Wang, Min
    et al.
    KTH Royal Institute of Technology, Sweden.
    Zander, Thomas
    Helmholtz Zentrum Geesthacht, Germany.
    Liu, Xiaoyan
    KTH Royal Institute of Technology, Sweden.
    Liu, Chao
    KTH Royal Institute of Technology, Sweden.
    Raj, Akanksha
    KTH Royal Institute of Technology, Sweden.
    Wieland, D. C. Florian
    Helmholtz Zentrum Geesthacht, Germany.
    Garamus, Vasil M.
    Helmholtz Zentrum Geesthacht, Germany.
    Willumeit-Römer, Regine
    Helmholtz Zentrum Geesthacht, Germany.
    Claesson, Per M.
    RISE., SP – Sveriges Tekniska Forskningsinstitut. KTH Royal Institute of Technology, Sweden.
    Dedinaite, Andra
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber. KTH Royal Institute of Technology, Sweden.
    The effect of temperature on supported dipalmitoylphosphatidylcholine (DPPC) bilayers: Structure and lubrication performance2015Ingår i: Journal of Colloid and Interface Science, ISSN 0021-9797, E-ISSN 1095-7103, Vol. 445, s. 84-92Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Phospholipids fulfill an important role in joint lubrication. They, together with hyaluronan and glycoproteins, are the biolubricants that sustain low friction between cartilage surfaces bathed in synovial fluid. In this work we have investigated how the friction force and load bearing capacity of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) bilayers on silica surfaces are affected by temperature, covering the temperature range 25–52 °C. Friction forces have been determined utilizing the AFM colloidal probe technique, which showed that DPPC bilayers are able to provide low friction forces over the whole temperature interval. However, the load bearing capacity is improved at higher temperatures. We interpret this finding as being a consequence of lower rigidity and higher self-healing capacity of the DPPC bilayer in the liquid disordered state compared to the gel state. The corresponding structure of solid supported DPPC bilayers at the silica–liquid interface has been followed using X-ray reflectivity measurements, which suggests that the DPPC bilayer is in the gel phase at 25 °C and 39 °C and in the liquid disordered state at 55 °C. Well-defined bilayer structures were observed for both phases. The deposited DPPC bilayers were also imaged using AFM PeakForce Tapping mode, and these measurements indicated a less homogeneous layer at temperatures below 37 °C.

  • 104.
    Wåhlander, Martin
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut. KTH Royal Institute of Technology, Sweden.
    Hansson-Mille, Petra M.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Swerin, Agne
    RISE., SP – Sveriges Tekniska Forskningsinstitut. KTH Royal Institute of Technology, Sweden.
    Superhydrophobicity: Cavity growth and wetting transition2015Ingår i: Journal of Colloid and Interface Science, ISSN 0021-9797, E-ISSN 1095-7103, Vol. 448, s. 482-491Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    We show by using AFM colloidal probe microscopy (combinations of hydrophobic/superhydrophobic as probe/surface) that superhydrophobicity displays a set of specific events when compared with hydrophobicity. Both attraction (due to capillary and wetting forces) and repulsion (most likely due to repelling air/vapor layers or micro-/nanobubbles) occur upon approach and when surfaces are pulled apart both shorter range (50–100 nm or more) and longer range (several micrometers) attractive forces are displayed. The interaction is explained by forces generated through the formation of air and water vaporcavities, in the shorter-range (>50 nm) case maintaining a constant volume of the cavity, in agreement with calculation of capillary forces, and in the longer-range (>1 μm) case through access of air to the cavity, in agreement with thermodynamics of cavity growth. An added sodium dodecyl sulphate surfactant gave a partially reversible wetting transition and reduced the longer-range interaction to shorter-range, suggesting a transfer from the Cassie–Baxter to the Wenzel wetting regime. The findings would be of interest in development of practical applications, such as for anti-soiling, anti-icing, protection of electrical componentsand for extreme water-repellency in paper and textiles.

  • 105.
    Yarahmadi, Nazdaneh
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Jakubowicz, Ignacy
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Determination of the suitable methods for recycling of old and new flooring materials - Mechanical recycling aand energy recovery2002Konferensbidrag (Övrigt vetenskapligt)
  • 106.
    Yarahmadi, Nazdaneh
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Jakubowicz, Ignacy
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    MISTRA- Sustainable building, Experiences From a Cross-Disiplinary Research Program2002Rapport (Refereegranskat)
  • 107.
    Yarahmadi, Nazdaneh
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Jakubowicz, Ignacy
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Polymeric materials in sustainable building2002Konferensbidrag (Övrigt vetenskapligt)
  • 108.
    Yarahmadi, Nazdaneh
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Jakubowicz, Ignacy
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Polymeric materials in sustainable building MISTRA- sustainable building. Experiences from a cross-disciplinary research programme2002Rapport (Refereegranskat)
  • 109.
    Yarahmadi, Nazdaneh
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Jakubowicz, Ignacy
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    PVC floorings as post-consumer products for mechanical recycling and energy recovery2003Ingår i: Polymer Degradation and Stability, Vol. 79, s. 439-448Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    PVC floorings as post-consumer products for mechanical recycling and energy recovery

  • 110.
    Yarahmadi, Nazdaneh
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Jakubowicz, Ignacy
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    The effects of heat treatment and ageing on the mechanical properties of rigid PVC2003Ingår i: Polymer Degradation and Stability, Vol. 82, s. 59-72Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The effects of heat treatment and ageing on the mechanical properties of rigid PVC

  • 111.
    Yarahmadi, Nazdaneh
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut.
    Jakubowicz, Ignacy
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Enebro, Jonas
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Polylactic acid and its blends with petroleum-based resins: Effects of reprocessing and recycling on properties2016Ingår i: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 133, nr 36, artikel-id 43916Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Environmental and economic reasons make the use of bioplastics and biocomposites increasingly coveted in sectors other than packaging. Recycling of all wasted or rejected durable plastics is highly desired and biobased plastics are no exception. Therefore, the investigation of pre- and post-consumer recycling of products made from biobased plastics is of great interest. Polylactic acid (PLA) and its blends have been chosen for this study because it is an excellent representative of mass-produced bioplastics for industrial applications. As part of the "Sustainable Recycling of 'Green' Plastics" project, the current study addresses the durability issues related to the reprocessing and post-consumer recycling of a PLA virgin resin and two commercially available blends of PLA namely one with polycarbonate (PC) and one with polyethylene (PE). The materials were investigated using methods that simulate post-processing and post-consumer recycling. Accelerated ageing was performed at elevated temperature and humidity to simulate the usage period of the materials. The materials were analyzed using differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), and their mechanical strength was evaluated by tensile and impact testing. The flow properties of the materials were characterized by the melt flow index (MFI). Multiple processing of pure PLA did not affect the impact strength or the glass transition temperature (Tg), but caused crystallization and increase in the MFI, indicating that degradation occurred during processing. DSC thermograms of the blends revealed that the components in the blends were not miscible. Multiple processing of the blends did not significantly affect the elastic modulus of the materials, but affected the elongation at break. The results indicated that multiple processing of the PLA/HDPE blend caused increased dispersion and thus increased elongation at break, while the dominating mechanism in the PLA/PC blend was degradation that caused a decrease in elongation at break. Post-consumer recycling of the PLA/PC blend was simulated and the results clearly showed that ageing corresponding to one year of use caused a significant degradation of PLA. Pure PLA was severely degraded after only one ageing cycle. Although the PLA/PC blend showed some improved mechanical properties and resistance to degradation compared with pure PLA, one ageing cycle still caused a severe degradation of the PLA and even the PC was degraded as indicated by the formation of small amounts of bisphenol A.

  • 112.
    Yarahmadi, Nazdaneh
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Jakubowicz, Ignacy
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Gevert, Thomas
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor.
    Determination of potential for recycling of polymeric products found in buildings from the 1960s and 70`s1999Konferensbidrag (Övrigt vetenskapligt)
  • 113.
    Yarahmadi, Nazdaneh
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Jakubowicz, Ignacy
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Gevert, Thomas
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor.
    Determination of potential for recycling of polymeric products found in buildings from the 1960s and 70s - a case study1999Ingår i: International journal of low energy and sustainable buildings. http://www.ce.kth.se/bim/leas/journal.htm, Vol. 1Artikel i tidskrift (Övrigt vetenskapligt)
  • 114.
    Yarahmadi, Nazdaneh
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Jakubowicz, Ignacy
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Gevert, Thomas
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor.
    Effects of repeated extrusion on properties and durability of rigid PVC2001Ingår i: Polymer degradation and stability, ISSN 0141-3910, E-ISSN 1873-2321, Vol. 73, nr 1, s. 93-99Artikel i tidskrift (Övrigt vetenskapligt)
  • 115.
    Yarahmadi, Nazdaneh
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Jakubowicz, Ignacy
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Gevert, Thomas
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor.
    Effects of repeated Extrusion on the Properties and Durability of Rigid PVC2000Konferensbidrag (Övrigt vetenskapligt)
  • 116.
    Ylmen, Peter
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Hansén, Magnus
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, SP – Sveriges Tekniska Forskningsinstitut / Byggnadsfysik och innemiljö (ETi ).
    Romild, Jörgen
    RISE., SP – Sveriges Tekniska Forskningsinstitut, SP Kemi Material och Ytor, Polymer och fiber.
    Beständighet hos lufttäthetslösningar2012Rapport (Refereegranskat)
123 101 - 116 av 116
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v. 2.35.9