Ändra sökning
Avgränsa sökresultatet
1 - 10 av 10
RefereraExporteraLänk till träfflistan
Permanent länk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Träffar per sida
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sortering
  • Standard (Relevans)
  • Författare A-Ö
  • Författare Ö-A
  • Titel A-Ö
  • Titel Ö-A
  • Publikationstyp A-Ö
  • Publikationstyp Ö-A
  • Äldst först
  • Nyast först
  • Skapad (Äldst först)
  • Skapad (Nyast först)
  • Senast uppdaterad (Äldst först)
  • Senast uppdaterad (Nyast först)
  • Disputationsdatum (tidigaste först)
  • Disputationsdatum (senaste först)
  • Standard (Relevans)
  • Författare A-Ö
  • Författare Ö-A
  • Titel A-Ö
  • Titel Ö-A
  • Publikationstyp A-Ö
  • Publikationstyp Ö-A
  • Äldst först
  • Nyast först
  • Skapad (Äldst först)
  • Skapad (Nyast först)
  • Senast uppdaterad (Äldst först)
  • Senast uppdaterad (Nyast först)
  • Disputationsdatum (tidigaste först)
  • Disputationsdatum (senaste först)
Markera
Maxantalet träffar du kan exportera från sökgränssnittet är 250. Vid större uttag använd dig av utsökningar.
  • 1.
    Achtel, Christian
    et al.
    Friedrich Schiller University Jena, Germany.
    Jedvert, Kerstin
    RISE - Research Institutes of Sweden (2017-2019), Material och produktion, IVF.
    Kostag, Marc
    University of Sao Paulo, Brazil.
    El Seoud, Omar A.
    University of Sao Paulo, Brazil.
    Heinze, Thomas
    Friedrich Schiller University Jena, Germany.
    Surprising Insensitivity of Homogeneous Acetylation of Cellulose Dissolved in Triethyl(n-octyl)ammonium Chloride/Molecular Solvent on the Solvent Polarity2018Ingår i: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 303, nr 5Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The homogeneous acetylation of microcrystalline cellulose (MCC) by acetyl chloride and acetic anhydride in triethyl(n-octyl)ammonium chloride (N2228Cl)/molecular solvents (MSs) is investigated. The reaction with both acylating agents shows the expected increase of the degree of substitution (DS) on reaction temperature and time. Under comparable reaction conditions, however, DS is surprisingly little dependent on the MS employed, although the MSs differ in empirical polarity by 7 kcal mol−1 as calculated by use of solvatochromic probes. The empirical polarities of (MCC + N2228Cl + MS) differ only by 0.8 kcal mol−1. The formation a polar electrolyte sheath around cellulose chains presumably contributes to this “leveling-off” of the dependence DS on the polarity of the parent MS employed. N2228Cl recovery and recycling is feasible. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

    Ladda ner fulltext (pdf)
    fulltext
  • 2.
    Brooke, Robert
    et al.
    RISE Research Institutes of Sweden, Digitala system, Smart hårdvara.
    Freitag, Kathrin
    RISE Research Institutes of Sweden, Digitala system, Smart hårdvara.
    Petsagkourakis, Ioannis
    RISE Research Institutes of Sweden, Digitala system, Smart hårdvara.
    Nilsson, Martin
    Andersson Ersman, Peter
    RISE Research Institutes of Sweden, Digitala system, Smart hårdvara.
    All-Printed Electrochromic Stickers2023Ingår i: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 308, nr 9, artikel-id 2300044Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Displays are one of the most mature technologies in the field of printed electronics. Their ability to be manufactured in large quantities and at low cost has led to their recent uptake into the consumer market. Within this article this technology is extended to electrochromic display stickers. This is achieved using a recent reverse display architecture screen printed on textile and paper sticker substrates. The electrochromic stickers are comparable to plastic control substrates and show little performance difference even when adhered to curved surfaces. The electrochromic display technology is extended to sticker labels for authentication applications by patterning either the dielectric or the graphical layer. A proof-of-concept prototype emulating a wax seal on an envelope is presented to show that other colors can be implemented in this technology. © 2023 The Authors.

  • 3.
    Brooke, Robert
    et al.
    RISE Research Institutes of Sweden, Digitala system, Smart hårdvara.
    Petsagkourakis, Ioannis
    RISE Research Institutes of Sweden, Digitala system, Smart hårdvara.
    Majee, Subimal
    RISE Research Institutes of Sweden, Digitala system, Smart hårdvara.
    Olsson, Oliver
    Chalmers University of Technology, Sweden.
    Dahlin, Aandres
    Chalmers University of Technology, Sweden.
    Andersson Ersman, Peter
    RISE Research Institutes of Sweden, Digitala system, Smart hårdvara.
    All-Printed Multilayers and Blends of Poly(dioxythiophene) Derivatives Patterned into Flexible Electrochromic Displays2023Ingår i: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 308, nr 2, artikel-id 2200453Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Low-cost, flexible and thin display technology is becoming an interesting field of research as it can accompany the wide range of sensors being developed. Here, the synthesis of poly(dimethylpropylene-dioxythiophene) (PProDOT-Me2) by combining vapor phase polymerization and screen printing is presented. A multilayer architecture using poly(3,4-ethylenedioxythiophene) (PEDOT) and PProDOT-Me2 to allow for electrochromic switching of PProDOT-Me2, thereby eliminating the need for a supporting transparent conductive (metal oxide) layer is introduced. Furthermore, the technology is adapted to a blended architecture, which removes the additional processing steps and results in improved color contrast (∆E* > 25). This blend architecture is extended to other conductive polymers, such as PEDOT and polypyrrole (PPy), to highlight the ability of the technique to adjust the color of all-printed electrochromic displays. As a result, a green color is obtained when combining the blue and yellow states of PEDOT and PPy, respectively. This technology has the potential to pave the way for all-printed multicolored electrochromic displays for further utilization in printed electronic systems in various Internet of Things applications. © 2022 The Authors. 

  • 4.
    El Seoud, Omar
    et al.
    University of São Paulo, Brazil.
    Kostag, Marc
    University of São Paulo, Brazil.
    Jedvert, Kerstin
    RISE Research Institutes of Sweden, Material och produktion, Kemi, biomaterial och textil.
    Malek, Naved
    Sardar Vallabhbhai National Institute of Technology, India.
    Cellulose Regeneration and Chemical Recycling: Closing the “Cellulose Gap” Using Environmentally Benign Solvents2020Ingår i: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 305, nr 4, artikel-id 1900832Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Strategies to mitigate the expected “cellulose gap” include increased use of wood cellulose, fabric reuse, and recycling. Ionic liquids (ILs) are employed for cellulose physical dissolution and shaping in different forms. This review focuses on the regeneration of dissolved cellulose as nanoparticles, membranes, nonwoven materials, and fibers. The solvents employed in these applications include ILs and alkali solutions without and with additives. Cellulose fibers obtained via the carbonate and carbamate processes are included. Chemical recycling (CR) of polycotton (cellulose plus poly(ethylene terephthalate)) is addressed because depending on the recycling approach employed, this process is akin to regeneration. The strategies investigated in CR include preferential dissolution or depolymerization of one component of the blend, and separation of both components using ILs. It is hoped that this review focuses the attention on the potential applications of regenerated cellulose from its solutions and contributes to the important environmental issue of recycling of used materials.

  • 5.
    Haubold, Thorben
    et al.
    University of Bremen, Germany; Fraunhofer Institute, Germany.
    Wolter, Nick
    Fraunhofer Institute, Germany; University of Bremen, Germany.
    Sandinge, Anna
    RISE Research Institutes of Sweden, Säkerhet och transport, Brand och Säkerhet.
    Blomqvist, Per
    RISE Research Institutes of Sweden, Säkerhet och transport, Brand och Säkerhet.
    Mayer, Bernd
    Fraunhofer Institute, Germany; University of Bremen, Germany.
    Koschek, Katharina
    Fraunhofer Institute, Germany.
    How Phosphorous Flame Retardant Additives Affect Benzoxazine-Based Monomer and Polymer Properties2023Ingår i: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 308, nr 11, artikel-id 2300132Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The phosphorous-based flame retardant additives poly(m-phenylene methylphosphonate) (PMP) and resorcinol bis(diphenyl phosphate) (RDP) are reacted with bisphenol F and aniline–based benzoxazine (BF-a). DSC, rheological analysis, FT-IR, and soxhlet extraction reveal the covalent incorporation of both FR additives—initiating phenols in PMP structure as well as free phenols generated via transesterification reaction in the case of RDP. In contrast to PMP, RDP elongates the processing window but decreases the thermo–mechanical properties. Both additives increase the resistance in reactions against small flames with solely a phosphorous loading of 0.3 wt%, resulting in a V-0 rating and an improvement in the OI value by up to 2% for RDP and 4% for PMP. Both FRs reduce the heat release rate but increase the smoke production and the smoke toxicity in the case of RDP. 

  • 6.
    Jedvert, Kerstin
    et al.
    RISE - Research Institutes of Sweden (2017-2019), Material och produktion, IVF. University of Jena, Germany.
    Elschner, Thomas
    University of Maribor, Slovenia.
    Heinze, Thomas
    University of Jena, Germany.
    Adsorption Studies of Amino Cellulose on Cellulosics2017Ingår i: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 302, nr 7, artikel-id 1700022Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Adsorption of a typical example of a new class of amino cellulose, namely 6-deoxy-6-(2-aminoethyl)amino cellulose at different pH-values and in the presence of electrolytes, onto cellulose model substrates is studied with surface plasmon resonance and quartz crystal microbalance with dissipation monitoring. Unexpectedly, adsorption is consistently higher at a higher pH-value of 10, indicating that solubility and interactions between amine moieties and cellulose are more important than electrostatic interactions. The findings are highly relevant for the process to modify material surfaces with amino cellulose in water-based systems as a universal tool for changing the surface properties and chemistry. Potential applications for an antimicrobial all biobased material could be found, e.g., as medical textiles or in the biotechnology sector.

    Ladda ner fulltext (pdf)
    fulltext
  • 7.
    Kim, Youngseok
    et al.
    Gwangju Institute of Science and Technology, Republic of Korea.
    Lund, Anja
    Chalmers University of Technology, Sweden.
    Noh, Hyebin
    Gwangju Institute of Science and Technology, Republic of Korea.
    Hofmann, Anna I.
    Chalmers University of Technology, Sweden.
    Craighero, Mariavittoria
    Department of Chemistry and Chemical Engineering Chalmers University of Technology Göteborg 41296 Sweden.
    Darabi, Sozan
    Chalmers University of Technology, Sweden.
    Zokaei, Sepideh
    Chalmers University of Technology, Sweden.
    Park, Jae Il
    Gwangju Institute of Science and Technology, Republic of Korea.
    Yoon, Myung‐Han
    Gwangju Institute of Science and Technology, Republic of Korea.
    Müller, Christian
    Chalmers University of Technology, Sweden.
    Robust PEDOT:PSS Wet‐Spun Fibers for Thermoelectric Textiles2020Ingår i: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 305, nr 3Artikel i tidskrift (Refereegranskat)
  • 8.
    Sensi, Matteo
    et al.
    Università di Modena e Reggio Emilia, Italy.
    Migatti, Giulio
    Università di Modena e Reggio Emilia, Italy.
    Beni, Valerio
    RISE Research Institutes of Sweden, Digitala system, Smart hårdvara.
    D'Alvise, Tommaso
    Max Planck Institute, Germany.
    Weil, Tanja
    Max Planck Institute, Germany.
    Berto, Marcello
    Università di Modena e Reggio Emilia, Italy.
    Greco, Pierpalo
    Università di Modena e Reggio Emilia, Italy; Center for Translational Neurophysiology-Istituto Italiano di Tecnologia,, Italy.
    Imbriano, Carol
    Università di Modena e Reggio Emilia, Italy.
    Biscarini, Fabio
    Università di Modena e Reggio Emilia, Italy; Center for Translational Neurophysiology-Istituto Italiano di Tecnologia, Italy.
    Bortolotti, Carlo
    Università di Modena e Reggio Emilia, Italy.
    Monitoring DNA Hybridization with Organic Electrochemical Transistors Functionalized with Polydopamine2022Ingår i: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 307, nr 5, artikel-id 2100880Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Organic electrochemical transistors (OECTs) are finding widespread application in biosensing, thanks to their high sensitivity, broad dynamic range, and low limit of detection. An OECT biosensor requires the immobilization of a biorecognition probe on the gate, or else on the channel, through several, often lengthy, chemical steps. In this work, a fast and straightforward way to functionalize the carbon gate of a fully screen-printed OECT by means of a polydopamine (PDA) film is presented. By chemical immobilization of an amine-terminated single-stranded oligonucleotide, containing the HSP70 promoter CCAAT sequence, on the PDA film, the detection of the complementary DNA strand is demonstrated. Furthermore, the specificity of the developed genosensor is assessed by comparing its response to the fully complementary strand with the one to partially complementary and noncomplementary oligonucleotides. The developed sensor shows a theoretical limit of detection (LOD) of 100 × 10−15 m and a dynamic range over four orders of magnitude. © 2022 The Authors.

  • 9.
    Träger, Andrea
    et al.
    KTH Royal Institute of Technology, Sweden.
    Carlmark, Anna
    RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi. KTH Royal Institute of Technology, Sweden.
    Wågberg, Lars
    KTH Royal Institute of Technology, Sweden.
    Interpenetrated Networks of Nanocellulose and Polyacrylamide with Excellent Mechanical and Absorptive Properties2018Ingår i: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 303, nr 5, artikel-id 1700594Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Composites based on interpenetrating networks (IPNs) of cellulose nanofibril (CNF) aerogels and polyacrylamide are prepared and exhibit robust mechanical, water retaining, and re-swelling capacities. Furthermore, their swelling behavior is not affected by an increased ionic strength of the aqueous phase. These unprecedented IPNs combine the water retaining capacity of the polyacrylamide with the mechanical strength provided by the CNF aerogel template. The CNF aerogel/polyacrylamide composites exhibit a compressive stress at break greater than 250% compared with a neat polyacrylamide hydrogel. Furthermore, the composites retain their wet compression properties after drying and re-swelling, whereas the neat polyacrylamide hydrogels fail at a significantly lower stress and strain after drying and re-swelling. These composite materials highlight the potential of CNF aerogels to strengthen the mechanical properties and reduce the number of fracture defects during the drying and re-swelling of a hydrogel. These composites show the potential of being optimized for a plethora of applications, especially in the hygiene field and for biomedical devices. 

  • 10.
    Ulmefors, Hanna
    et al.
    RISE Research Institutes of Sweden, Material och produktion, Polymera material och kompositer.
    Yang Nilsson, Ting
    RISE Research Institutes of Sweden, Material och produktion, Polymera material och kompositer.
    Eriksson, Viktor
    Chalmers University of Technology, Sweden.
    Eriksson, Gustav
    Chalmers University of Technology, Sweden.
    Evenäs, Lars
    Chalmers University of Technology, Sweden.
    Andersson Trojer, Markus
    RISE Research Institutes of Sweden, Material och produktion, Polymera material och kompositer. Chalmers University of Technology, Sweden.
    Solution-Spinning of a Collection of Micro- and Nanocarrier-Functionalized Polysaccharide Fibers2022Ingår i: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 307, nr 8, artikel-id 2200110Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Continuous polysaccharide fibers and nonwovens—based on cellulose, hydroxypropyl cellulose, chitosan, or alginate—containing biopolymeric microcapsules (MC) or mesoporous silica nanoparticles (MSN) are prepared using a wet-spinning or solution blowing technique. The MCs are homogeneously distributed in the fiber matrices whereas the MSNs form discrete micron-sized aggregates as demonstrated using scanning electron-, fluorescence-, and confocal microscopy. By encapsulating the model compound pyrene, it is shown that 95% of the substance remains in the fiber during the formation process as compared to only 7% for the nonencapsulated substance. The material comprising the MC has a strong impact on the release behavior of the encapsulated pyrene as investigated using methanol extraction. MCs based on poly(l-lactic acid) prove to be practically impermeable with no pyrene released in contrast to MCs based on poly(lactic-co-glycolic acid) which allow for diffusion of pyrene through the MC and fiber as visualized using fluorescence microscopy. © 2022 The Authors.

1 - 10 av 10
RefereraExporteraLänk till träfflistan
Permanent länk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf