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  • 101.
    Sundberg, Peter
    et al.
    RISE - Research Institutes of Sweden, Biovetenskap och material, Kemi och material.
    Grund Bäck, Lina
    RISE - Research Institutes of Sweden, Samhällsbyggnad, Byggteknik.
    Orman, Robin
    Johnson Matthey Technology Centre, UK.
    Booth, Jonathan
    Johnson Matthey Technology Centre, UK.
    Karlsson, Stefan
    RISE - Research Institutes of Sweden, Samhällsbyggnad, Byggteknik.
    Simultaneous chemical vapor deposition and thermal strengthening of glass2018Inngår i: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 669, nr 1, s. 487-493Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In the current paper we present a concept combining metal organic chemical vapor deposition with thermal strengthening process of flat glass. As the flat glass is heated to be thermally strengthened, which takes up to 20 minutes, there is an opportunity for performing a surface modification. We describe the application of transparent and amorphous Al2O3 thin films during the thermal strengthening process. Al2O3 was chosen due to the following desirable properties: increased surface mechanical properties and increased chemical durability, the latter has not been investigated in the current paper. The residual surface compressive stresses after performed strengthening of the coated glasses were quantified to be in the range of 80–110 MPa. The Al2O3 content in the surface was measured using the Surface Ablation Cell employed with Inductively Coupled Plasma Atomic Emission Spectroscopy and found to be at least doubled at the surface and having an increased Al2O3 content at least 0.5 μm underneath the glass surface. During the surface reaction, sodium is migrating to the surface giving a hazy salt layer on the glass which can easily be washed off with water. The applied coatings are transparent and provide increased surface hardness and crack resistance at low indentation loads. At higher indentation loads the interaction volume is larger and displays the same effect on the surface mechanical properties as for thermally strengthened glass. The contact angle with water compared to annealed float glass is significantly increased from 5° to 45° due to the different surface chemistry and surface topography.

    Fulltekst tilgjengelig fra 2020-11-28 08:05
  • 102.
    Sundberg, Peter J.
    et al.
    RISE., SP – Sveriges Tekniska Forskningsinstitut, Glafo Glasforskningsinstitutet.
    Karlsson, Stefan
    RISE., SP – Sveriges Tekniska Forskningsinstitut, Glafo Glasforskningsinstitutet.
    Brochot, Dominique
    Simons, Jose
    Strubel, Christine
    Surface analysis of float glass using surface ablation cell (SAC).: Part 1. Initial collaboration and comparison with SIMS2010Inngår i: Glass Technology: European Journal of Glass Science and Technology Part A, ISSN 1753-3554, Vol. 51, nr 1, s. 13-21Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this paper, the use of a surface ablation cell (SAC) to quantify the elemental compositional depth profile of float glass is presented. High spatial resolution data of 10-20 nm is reported. Elemental resolution is also high so that, for example, the tin hump, which is not normally observed in low iron borofloat glasses, is recorded with good resolution. The technique is based on a wet dissolution of the glass surface on a layer by layer basis using ordinary equipment available in most chemical laboratories. Due to its simple nature, the procedure required further collaborative investigation with other instrumental surface analytical techniques. The results obtained compare very favourably with those obtained by secondary ion mass spectrometry (SIMS). It is shown that sample pretreatment is important and directly affects the outcome of the investigation. The effects of acid concentration, and probably most other experimental parameters, are also shown to affect the step length in the profiling process. The future use of the SAC as a complementary technique for surface studies is foreseen both in laboratories and also in the production environment as a reliable off-line technique for surface characterisation. The technique was developed through a collaborative workprogramme devised by Technical Committee 2 (Chemical Durability and Analysis) a technical sub-committee of the International Commission on Glass (ICG/TC-02).

  • 103.
    Svärd, Antonia
    et al.
    KTH Royal Institute of Technology, Sweden.
    Brännvall, Elisabet
    RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi.
    Edlund, Ulrica
    KTH Royal Institute of Technology, Sweden.
    Modified and thermoplastic rapeseed straw xylan: A renewable additive in PCL biocomposites2018Inngår i: Industrial crops and products (Print), ISSN 0926-6690, E-ISSN 1872-633X, Vol. 119, s. 73-82Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Xylan extracted from rapeseed straw was chemically modified to gain hydrophobic and thermoplastic properties via macroinitiator formation followed by a free radical grafting-from polymerization with octadecyl acrylate. Biocomposites were then prepared by incorporation of 5 or 20% (w/w) rapeseed straw xylan into a poly(ε-caprolactone) (PCL) matrix by melt extrusion. The grafted xylan was homogeneously distributed within the biocomposite and reinforced the PCL matrix while at the same time preserving the ability to elongate to tensile strains >500%. Analogous biocomposites made from unmodified xylan in a PCL matrix resulted in heterogeneous mixtures and brittle tensile properties.

  • 104.
    Tomani, P.
    et al.
    RISE, Innventia.
    Axegard, P.
    RISE, Innventia.
    Norberg, L.
    RISE, Innventia.
    Akerlund, L.-E.
    RISE, Innventia.
    Lignin removal from different black liquors2012Konferansepaper (Fagfellevurdert)
  • 105.
    Toven, K.
    et al.
    RISE, Innventia, PFI – Paper and Fiber Research Institute.
    Celaya, J.
    Lenes, M.
    RISE, Innventia, PFI – Paper and Fiber Research Institute.
    Bridgwater, A.V.
    Ash free pyrolysis liquid from softwood forestry residues2012Konferansepaper (Fagfellevurdert)
  • 106.
    Wang, Miao
    et al.
    RISE., Innventia.
    Sjöholm, Elisabeth
    RISE., Innventia.
    Li, Jiebing
    RISE., Innventia.
    On lignin reactivity quantification for lignin substitution of phenol in preparation of phenol-formaldehyde polymer2014Konferansepaper (Fagfellevurdert)
  • 107.
    Wedin, Helena
    et al.
    RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi.
    Niit, Ellinor
    Swedish School of Textiles, Sweden.
    Ahmad Mansoor, Zaheer
    re:newcell, Sweden.
    Kristinsdottir, Anna Runa
    RISE - Research Institutes of Sweden, Material och produktion, IVF.
    de la Motte, Hanna
    RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi.
    Jönsson, Christina
    RISE - Research Institutes of Sweden, Material och produktion, IVF.
    Östlund, Åsa
    RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi.
    Lindgren, Christofer
    re:newcell, Sweden.
    Investigation of recycled viscose fibres after removal of a reactive dye combination and an easy care finish agent2017Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    Textile-to-textile recycling from cotton textiles can be done either mechanically or chemically. In chemical textile recycling of cotton there are challenges to overcome in order to regenerate new fibres. Two of the challenges among others are reactive dyes and wrinkle-free finishes that could disturb the regeneration process steps since these finishes are covalently linked to the cellulose.

    This poster discusses the impact of using a novel alkaline/acid bleaching sequence to strip reactive dyes and wrinkle-free finish (DMDHEU) from cotton textile for production of regenerated viscose fibre properties. The results might generate a promising step forward to overcome quality challenges for cellulosic chemical recycling.

  • 108.
    Willstrand, Ola
    RISE - Research Institutes of Sweden.
    Fire Suppression Tests for Vehicle Battery Pack2019Rapport (Annet vitenskapelig)
    Abstract [en]

    This test report is part of a project (No. 45629-1) which addresses fire safety of road vehicles with lithium-ion batteries (LIBs). As part of potential safety measures evaluated in the project, fixed fire suppression systems have been in focus. Fire suppression systems are common in heavy vehicles and are widely considered to be an effective way to mitigate fires. In conventionally powered vehicles, they normally protect engine compartments and spaces with auxiliary heaters. It is therefore of importance to investigate whether fixed fire suppression systems can act as a control measure for LIBs.

    The test results have shown that internal activation of a water-based fire suppression system inside a battery pack has good potential to have a lasting cooling effect on the battery and to increase the chance of mitigating and preventing thermal runaway propagation. External activation had, in this case, no cooling effect or impact on the thermal runaway propagation, but put out flames on the outside of the battery pack mitigating fire spread from the battery to the surroundings. However, keep in mind that without cooling of the battery and without flames there is a risk that large quantities of flammable gas are released. If these gases could accumulate in enclosed spaces, e.g. the battery compartment, there is a risk of explosion in case of available ignition sources, e.g. sparks from the battery or hot surfaces on the vehicle.

    Due to very limited free space inside a battery pack the results indicate that it is more optimal to have a low flow rate and longer release time of the agent. The test results do not show the minimum amount of agent needed, but 12-13 l resulted in a good effect in this case. In the water spray tests it were observed that a large quantity of agent was thrown out from the battery pack due to the limited free space inside, indicating that similar results could have been achieved for significantly less amount of agent.

    The conclusions are valid for this type of battery cells, modules and pack, and this type of scenario, but give an indication of the potential of using fire suppression systems for other types of battery packs and scenarios. To ensure good effect and good design of the fire suppression system it is recommended that fire tests are performed for each unique battery installation.

  • 109. Winestrand, S.
    et al.
    Larsson, S.
    Cassland, P.
    Nilvebrant, N.-O.
    RISE, Innventia.
    Jonsson, L.J.
    Effects of ionic substances in bleaching filtrates and of lignosulfonates on the activity of oxalate oxidase from barley2011Inngår i: Engineering in Life Sciences, ISSN 1618-0240, E-ISSN 1618-2863, nr 3, s. 245-252Artikkel i tidsskrift (Fagfellevurdert)
  • 110.
    Ye, Xinchen
    et al.
    KTH Royal Institute of Technology, Sweden.
    Junel, Kristina
    RISE - Research Institutes of Sweden, Bioekonomi, Papperstillverkning och förpackningar.
    Gällstedt, Mikael
    SIG Combibloc, Sweden.
    Langton, Maud
    SLU Swedish University of Agricultural Sciences, Sweden.
    Wei, Xin-Feng
    KTH Royal Institute of Sweden, Sweden.
    Lendel, Christofer
    KTH Royal Institute of Sweden, Sweden.
    Hedenqvist, Mikael S.
    KTH Royal Institute of Sweden, Sweden.
    Protein/Protein Nanocomposite Based on Whey Protein Nanofibrils in a Whey Protein Matrix2018Inngår i: ACS Sustainable Chemistry and Engineering, ISSN 2168-0485, Vol. 6, nr 4, s. 5462-5469Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This article describes nanocomposite films with separately grown protein nanofibrils (PNFs) in a nonfibrillar protein matrix from the same protein starting material (whey). Tensile tests on the glycerol-plasticized films indicate an increased elastic modulus and a decreased extensibility with increasing content of PNFs, although the films are still ductile at the maximum PNF content (15 wt %). Infrared spectroscopy confirms that the strongly hydrogen-bonded β-sheets in the PNFs are retained in the composites. The films appear with a PNF-induced undulated upper surface. It is shown that micrometer-scale spatial variations in the glycerol distribution are not the cause of these undulations. Instead, the undulations seem to be a feature of the PNF material itself. It was also shown that, apart from plasticizing the protein film, the presence of glycerol seemed to favor to some extent exfoliation of stacked β-sheets in the proteins, as revealed by X-ray diffraction.

  • 111.
    Zhu, Baiwei
    et al.
    Jönköping University, Sweden.
    Fedel, Michele
    University of Trento, Italy.
    Andersson, Nils-Eric
    Jönköping University, Sweden.
    Leisner, Peter
    RISE - Research Institutes of Sweden, Säkerhet och transport, Elektronik. Jönköping University, Sweden.
    Deflorian, Flavio
    University of Trento, Italy.
    Zanella, Caterina
    Jönköping University, Sweden.
    Effect of Si content and morphology on corrosionresistance of anodized cast Al-Si alloys2017Inngår i: Journal of the Electrochemical Society, ISSN 0013-4651, E-ISSN 1945-7111, Vol. 164, nr 7, s. C435-C441Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper investigates the influence of Si content and Si particle morphology on the corrosion protection of anodized oxide layers on Al-Si alloys. Two Al alloys with low Si concentrations (2.43 wt-% and 5.45 wt-%, respectively) were studied and compared with 6082-T6 via electrochemical impedance spectroscopy (EIS) in 3 wt-% NaCl solution prior to oxide layer sealing. Si particles were also modified by the addition of Sr to study the influence of Si particle morphology on the corrosion protection of the oxide layer. The EIS showed that the corrosion protection provided by the oxide layer on Al-Si alloys is significantly affected by the presence of Si particles. Si particles make the oxide layer locally thinner and more defective in the eutectic region, thereby increasing the ease of substrate corrosion attack. However, the addition of Sr can improve the corrosion protection of anodized Al-Si alloys significantly. Furthermore, it was proved that higher Si level influences negatively the anodized oxide corrosion protection due to the higher amount of cracks and defects, but Sr modification is efficient in preventing this negative effect.

  • 112.
    Zhu, Baiwei
    et al.
    Jönköping University, Sweden.
    Fedel, Michele
    University of Trento, Italy.
    Andersson, Nils-Eric
    Jönköping University, Sweden.
    Leisner, Peter
    RISE - Research Institutes of Sweden, Säkerhet och transport, Elektronik. Jönköping University, Sweden.
    Deflorian, Flavio
    University of Trento, Italy.
    Zanella, Caterina
    Jönköping University, Sweden.
    Influence of the Srmodification and post-treatment on corrosion resistance of oxide layer of cast Al-(low)Si alloys2017Konferansepaper (Fagfellevurdert)
  • 113.
    Ziesig, R.
    et al.
    RISE, Innventia.
    Tomani, P.
    RISE, Innventia.
    Theliander, H.
    Production of a pure lignin product part 2: Separation of lignin from membrane filtration permeates of black liquor2014Inngår i: Cellulose Chemistry and Technology, ISSN 0576-9787, Vol. 48, nr 9-10, s. 805-811Artikkel i tidsskrift (Fagfellevurdert)
  • 114.
    Öyaas, K.
    et al.
    RISE., Innventia, PFI – Paper and Fiber Research Institute.
    Johnsen, I.A.
    Hoff, B.H.
    Opedal, Mihaela Tanase
    Toven, K.
    RISE., Innventia, PFI – Paper and Fiber Research Institute.
    Gulbrandsen, T.Aa.
    Hot water extraction of hemicellulose from softwood and sugarcane bagasse using microwave heating technology2012Konferansepaper (Fagfellevurdert)
  • 115.
    Öyaas, K.
    et al.
    RISE., Innventia, PFI – Paper and Fiber Research Institute.
    Toven, K.
    RISE., Innventia, PFI – Paper and Fiber Research Institute.
    Low temperature sulfonation of lignocellulose for effective biomass deconstruction and conversion2012Konferansepaper (Fagfellevurdert)
  • 116. Öyaas, K.
    et al.
    Toven, K.
    Johnsen, I.A.
    Agnihotri, S.
    Moe, S.
    MacKenzie, A.
    Eijsink, V.
    The LignoRef Project:: A national research initiative to enhance biorefinery process developments in Norway2012Konferansepaper (Fagfellevurdert)
123 101 - 116 of 116
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