Zobrazeno 1 - 10
of 186
pro vyhledávání: '"Tarja Tamminen,"'
Publikováno v:
ACS Omega, Vol 5, Iss 22, Pp 13438-13446 (2020)
Externí odkaz:
https://doaj.org/article/c9d3ba587d964e60b10977aebd2a6ab2
Publikováno v:
C, Vol 6, Iss 4, p 65 (2020)
Biochars are attractive materials for carbon catalysts since their carbon content and surface area are relatively high and minerals present in biochar can act as active sites for catalytic reactions. In this study, biochars from the fast pyrolysis of
Externí odkaz:
https://doaj.org/article/16260d6a914747b3bcb5d9c9baa4d676
Autor:
Heli Kangas, Terhi K. Hakala, Tarja Tamminen, Marjo Määttänen, Stella Rovio, Tiina Liitiä, Kristiina Poppius-Levlin
Publikováno v:
BioResources, Vol 10, Iss 2, Pp 2699-2718 (2015)
Birch wood chips were cooked in acetic acid in the presence of phosphinic acid according to the Lignofibre (LGF) organosolv process. The cooking trials were performed according to an experimental design with process time, temperature, and the presenc
Externí odkaz:
https://doaj.org/article/7ba05805dde64d1c9064a09372d64eeb
Autor:
Marc Borrega, Anna Kalliola, Marjo Määttänen, Anna S. Borisova, Atte Mikkelson, Tarja Tamminen
Publikováno v:
Borrega, M, Kalliola, A, Määttänen, M, Borisova, A S, Mikkelson, A & Tamminen, T 2022, ' Alkaline extraction of polyphenols for valorization of industrial spruce bark ', Bioresource Technology Reports, vol. 19, 101129 . https://doi.org/10.1016/j.biteb.2022.101129
Industrial spruce bark is an abundant side-stream from forest industries that contains tannins and other phenolic compounds that can be exploited in a variety of applications. In this study, alkaline extractions of spruce bark conducted under a wide
Publikováno v:
BioResources, Vol 9, Iss 4, Pp 7336-7351 (2014)
Linear hydrophilic derivatives are expected to soften lignin and improve its utilization in composite applications. Oxidation by means of laccase in the presence of oxygen was employed in an attempt to functionalize commercial kraft lignin by vanilli
Externí odkaz:
https://doaj.org/article/a224e502fddf462fa81fa426a4d51cc9
Publikováno v:
Tupciauskas, R, Veveris, A, Andzs, M, Gravitis, J, Liitiä, T & Tamminen, T 2021, ' Investigation of a Grey Alder Particleboard Bonded by Different Industrial Side-Stream Lignins ', Mechanics of Composite Materials, vol. 57, no. 1, pp. 57-68 . https://doi.org/10.1007/s11029-021-09933-6
Particleboards based on a mixture of grey alder (Alnus incana (L.) Moench) wood particles (sieve fraction 0.4-2 mm) and 15 or 25% of lignin powder obtained by hot pressing from four different industrial sources were investigated. Their density, thick
Publikováno v:
Widsten, P, Tamminen, T, Paajanen, A, Hakkarainen, T & Liitiä, T 2021, ' Modified and unmodified technical lignins as flame retardants for polypropylene ', Holzforschung, vol. 75, no. 6, pp. 584-590 . https://doi.org/10.1515/hf-2020-0147
Polyolefins used in building materials and furniture require the use of flame-retardant (FR) additives to improve their fire safety. Such additives should be safe to humans and the environment, and preferably bio-based. In the present work, the FR pe
Autor:
Taina Ohra-aho, Tarja Tamminen, Marc Borrega, Sonja Päärnilä, Orlando J. Rojas, Luiz G. Greca, Anna Stiina Jääskeläinen
Publikováno v:
Langmuir
Borrega, M, Päärnilä, S, Greca, L G, Jääskeläinen, A S, Ohra-Aho, T, Rojas, O J & Tamminen, T 2020, ' Morphological and Wettability Properties of Thin Coating Films Produced from Technical Lignins ', Langmuir, vol. 36, no. 33, pp. 9675-9684 . https://doi.org/10.1021/acs.langmuir.0c00826
Borrega, M, Päärnilä, S, Greca, L G, Jääskeläinen, A S, Ohra-Aho, T, Rojas, O J & Tamminen, T 2020, ' Morphological and Wettability Properties of Thin Coating Films Produced from Technical Lignins ', Langmuir, vol. 36, no. 33, pp. 9675-9684 . https://doi.org/10.1021/acs.langmuir.0c00826
* Ack:ssa mutta ei silti mukaan raportointiin | openaire: EC/H2020/788489/EU//BioELCell Technical lignins are widely available as side streams from pulping and biorefining processes. The aromatic structure of such lignins could be exploited in coatin
Publikováno v:
ACS Omega
Widsten, P, Tamminen, T & Liitiä, T 2020, ' Natural Sunscreens Based on Nanoparticles of Modified Kraft Lignin (CatLignin) ', ACS Omega, vol. 5, no. 22, pp. 13438-13446 . https://doi.org/10.1021/acsomega.0c01742
ACS Omega, Vol 5, Iss 22, Pp 13438-13446 (2020)
Widsten, P, Tamminen, T & Liitiä, T 2020, ' Natural Sunscreens Based on Nanoparticles of Modified Kraft Lignin (CatLignin) ', ACS Omega, vol. 5, no. 22, pp. 13438-13446 . https://doi.org/10.1021/acsomega.0c01742
ACS Omega, Vol 5, Iss 22, Pp 13438-13446 (2020)
Commercial chemical sunscreens have a high content of synthetic ultraviolet (UV) actives that have caused widespread damage to marine ecosystems and may have adverse health effects in humans. In the present work, safer bio-based sunscreens with ligni
Lignin-First Integrated Hydrothermal Treatment (HTT) and Synthesis of Low-Cost Biorefinery Particles
Autor:
Tarja Tamminen, Dmitry Tarasov, Marc Borrega, Mikhail Balakshin, Tainise V. Lourençon, Orlando J. Rojas, Luiz G. Greca
Publikováno v:
Lourencon, T V, Greca, L G, Tarasov, D, Borrega, M, Tamminen, T, Rojas, O J & Balakshin, M Y 2020, ' Lignin-First Integrated Hydrothermal Treatment (HTT) and Synthesis of Low-Cost Biorefinery Particles ', ACS Sustainable Chemistry and Engineering, vol. 8, no. 2, pp. 1230-1239 . https://doi.org/10.1021/acssuschemeng.9b06511
Hydrothermal treatments (HTT) are used in the biorefineries to effectively valorize carbohydrate fractions and their products. However, lignin is often marginalized as a secondary component. Herein, we propose a new biorefinery approach focused on li