Výsledky vyhledávání - "Stina Grönqvist"

Akademický článek

ADSORPTION OF DIFFERENT LACCASES ON CELLULOSE AND LIGNIN SURFACES

Autor: Terhi Saarinen, Hannes Orelma, Stina Grönqvist, Martina Andberg, Susanna Holappa, Janne Laine

Publikováno v: BioResources, Vol 4, Iss 1, Pp 94-110 (2009)

The adsorption of Trametes hirsuta and Melanocarpus albomyces laccases on cellulose and lignin model substrates was studied by quartz crystal microbalance with dissipation, QCM-D. The laccase-treated surfaces were also analyzed by atomic force micros

Externí odkaz: https://doaj.org/article/f92b509b0032415d9bd7aeae404a6c56

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High consistency enzymatic pretreatment of eucalyptus and softwood kraft fibres for regenerated fibre products

Autor: Elisa Spönla, Jenni Rahikainen, Antje Potthast, Stina Grönqvist

Publikováno v: Spönla, E, Rahikainen, J, Potthast, A & Grönqvist, S 2023, ' High consistency enzymatic pretreatment of eucalyptus and softwood kraft fibres for regenerated fibre products ', Cellulose, vol. 30, no. 7, pp. 4609-4622 . https://doi.org/10.1007/s10570-023-05144-5

Sustainability of regenerated cellulosic fibres could be improved by using paper grade pulp instead of dissolving pulp as a raw material in the fibre spinning process. However, the use of paper grade pulp calls for adjustment of the molar mass distri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f1209eea9cdda9deb8b072a997788c0
https://doi.org/10.1007/s10570-023-05144-5

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High consistency mechano-enzymatic pretreatment for kraft fibres

Autor: Ville Lovikka, Thaddeus Maloney, Anna Suurnäkki, Stina Grönqvist, Kristiina Kruus, Jenni Rahikainen, Outi Mattila

Publikováno v: Rahikainen, J, Mattila, O, Maloney, T, Lovikka, V, Kruus, K, Suurnäkki, A & Grönqvist, S 2020, ' High consistency mechano-enzymatic pretreatment for kraft fibres : effect of treatment consistency on fibre properties ', Cellulose, vol. 27, pp. 5311-5322 . https://doi.org/10.1007/s10570-020-03123-8

Fibre reactivity is essential for cellulose dissolution and derivatisation and a porous fibre structure is one key determinant for a highly reactive pulp. Mechanical and enzymatic treatments are known to improve fibre reactivity and more recently, th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38683d4a9b8bfc1a288d4b11960a178f
https://cris.vtt.fi/en/publications/6c39660a-4db5-41da-986c-fa1957c2c787

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Lignin Nanoparticles-Based Antibacterial Coatings for Development of Antimicrobial Surfaces

Autor: Maria Morits, Roberta Teixeira Polez, Satu Salo, Petri Widsten, Kristoffer Meinander, Donika Morina, Stina Grönqvist, Monika Österberg

Publikováno v: Morits, M, Teixeira Polez, R, Salo, S, Widsten, P, Meinander, K, Morina, D, Grönqvist, S & Österberg, M 2022, Lignin Nanoparticles-Based Antibacterial Coatings for Development of Antimicrobial Surfaces . in A Virtanen, K Torvinen & J Vepsäläinen (eds), NWBC 2022 : The 10th Nordic Wood Biorefinery Conference . VTT Technical Research Centre of Finland, VTT Technology, no. 409, pp. 183-187, 10th Nordic Wood Biorefinery Conference, NWBC 2022, Helsinki, Finland, 25/10/22 . < https://publications.vtt.fi/pdf/technology/2022/T409.pdf >
Aalto University

Antibiotic resistance development in bacteria is a serious threat to human health all over the world. One of the common ways of transmission of bacteria is contact with contaminated surfaces. Antimicrobial surfaces are promising solution for containm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::02a8497fec71a3456a5a812f57f70820
https://cris.vtt.fi/en/publications/57788a08-f1dd-47bf-bb11-2e8d6dffb97c

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Effect of cellulase family and structure on modification of wood fibres at high consistency

Autor: Terhi Puranen, Jenni Rahikainen, Saija Väisänen, Mehedi Reza, Tapani Vuorinen, Anna Suurnäkki, Matthieu Molinier, Sara Ceccherini, Ulla Holopainen-Mantila, Kristiina Kruus, Stina Grönqvist, Thaddeus Maloney

Publikováno v: Rahikainen, J, Ceccherini, S, Molinier, M, Holopainen-Mantila, U, Reza, M, Väisänen, S, Puranen, T, Kruus, K, Vuorinen, T, Maloney, T, Suurnäkki, A & Grönqvist, S 2019, ' Effect of cellulase family and structure on modification of wood fibres at high consistency ', Cellulose, vol. 26, no. 8, pp. 5085-5103 . https://doi.org/10.1007/s10570-019-02424-x

Enzymatic modification of bleached softwood kraft fibres for improved fibre reactivity was studied at high (20% w/w) and low (1% w/w) dry matter content. The role of enzyme family and structure in fibre modification was assessed using endoglucanases

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b7d104a46dea872ac38983235ffef4d
https://doi.org/10.1007/s10570-019-02424-x

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Sustainable continuous process for cellulosic regenerated fibers

Autor: Marianna Vehviläinen, Marjo Määttänen, Stina Grönqvist, Ali Harlin, Manuel Steiner, Roland Kunkel

Publikováno v: Vehviläinen, M, Määttänen, M, Grönqvist, S, Harlin, A, Steiner, M & Kunkel, R 2020, ' Sustainable continuous process for cellulosic regenerated fibers ', Chemical Fibers International, vol. 70, no. 4, pp. 128-130 . < https://www.genios.de/fachzeitschriften/artikel/CFI/20201216/sustainable-continuous-process-for-/20201216553737.html >
VTT Technical Research Centre of Finland-PURE

Textiles and hygiene products prepared from man-made fibres are essential for the welfare of humans. Majority of these fibres are, however, synthetic and thus have a role in global warming and micro plastic issue. This has created an opportunity to i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::6b941298c6367002706080e760fdfea7
https://cris.vtt.fi/en/publications/3065f170-4e11-4b68-8f14-517a3eafed67

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Enhanced pre-treatment of cellulose pulp prior to dissolution into NaOH/ZnO

Autor: Anna Suurnäkki, Stina Grönqvist, Thaddeus Maloney, Taina Kamppuri, Marianna Vehviläinen, Tiina Liitiä

Publikováno v: Grönqvist, S, Kamppuri, T, Maloney, T, Vehviläinen, M, Liitiä, T & Suurnäkki, A 2015, ' Enhanced pre-treatment of cellulose pulp prior to dissolution into NaOH/ZnO ', Cellulose, vol. 22, no. 6, pp. 3981-3990 . https://doi.org/10.1007/s10570-015-0742-8

As a result of the constantly growing demand for textile fibres interest in utilising cellulose pulps for manufacturing regenerated cellulose fibres is growing. One promising water-based process for the manufacture of regenerated cellulosic products

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df5450e7d7a719c5d65686e780bf4c23
https://doi.org/10.1007/s10570-015-0742-8

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The effect of the outermost fibre layers on solubility of dissolving grade pulp

Autor: Taina Kamppuri, M. Skute, Thaddeus Maloney, Anna Suurnäkki, U. Grinfelds, Stina Grönqvist, A. Treimanis, Marianna Vehviläinen

Publikováno v: Grönqvist, S, Treimanis, A, Kamppuri, T, Maloney, T, Skute, M, Grinfelds, U, Vehviläinen, M & Suurnäkki, A 2015, ' The effect of the outermost fibre layers on solubility of dissolving grade pulp ', Cellulose, vol. 22, no. 6, pp. 3955-3965 . https://doi.org/10.1007/s10570-015-0709-9

Dissolving pulps are used to manufacture various cellulose derived products through cellulose dissolution. Solubility of cellulose pulp has been claimed to be strongly dependent on the porosity development, the degree of polymerisation and the pulp v

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::003736c76e7cfed2af1d0c1fedea5792
https://doi.org/10.1007/s10570-015-0709-9

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Dissolution of enzyme-treated cellulose using freezing–thawing method and the properties of fibres regenerated from the solution

Autor: Stina Grönqvist, Marja Rissanen, Taina Kamppuri, Mari Honkanen, Thaddeus Maloney, Marianna Vehviläinen, Pertti Nousiainen

Publikováno v: Vehviläinen, M, Kamppuri, T, Grönqvist, S, Rissanen, M, Maloney, T, Honkanen, M & Nousiainen, P 2015, ' Dissolution of enzyme-treated cellulose using freezing-thawing method and the properties of fibres regenerated from the solution ', Cellulose, vol. 22, no. 3, pp. 1653-1674 . https://doi.org/10.1007/s10570-015-0632-0

The rapid coagulation of NaOH-based cellulose solution during the wet spinning process leads to a low stretching ratio and, consequently, the low mechanical properties of the fibres. The aim of this work was to slow down the coagulation by replacing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96cff2b2cdb91dfc6eda81cf60a4d91d
https://doi.org/10.1007/s10570-015-0632-0

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Regeneration of fibres from alkaline solution containing enzyme-treated 3-allyloxy-2-hydroxypropyl substituted cellulose

Autor: Marja Rissanen, Mari Honkanen, Harri Setälä, Taina Kamppuri, Stina Grönqvist, Marianna Vehviläinen, Pertti Nousiainen

Publikováno v: Vehviläinen, M, Kamppuri, T, Setälä, H, Grönqvist, S, Rissanen, M, Honkanen, M & Nousiainen, P 2015, ' Regeneration of fibres from alkaline solution containing enzyme-treated 3-allyloxy-2-hydroxypropyl substituted cellulose ', Cellulose, vol. 22, no. 4, pp. 2271-2282 . https://doi.org/10.1007/s10570-015-0647-6

The aim of this study was to regenerate fibres from the alkaline cellulose solution containing 3-allyloxy-2-hydroxypropyl substituents. Enzyme-treated cellulose was modified in alkaline aqueous tert-butanol (tBuOH) using allyl glycidyl ether (AGE) as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c90b20fcdfd7e6d74cd1de8082a32f6e
https://cris.vtt.fi/en/publications/46fac3b6-cbbf-40ba-a0ec-27c75f41e32e

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