Výsledky vyhledávání - "Hannes Orelma"

Akademický článek

Cellulose Nanofibril (CNF) Films and Xylan from Hot Water Extracted Birch Kraft Pulps

Autor: Marc Borrega, Hannes Orelma

Publikováno v: Applied Sciences, Vol 9, Iss 16, p 3436 (2019)

The effects of xylan extraction from birch kraft pulp on the manufacture and properties of cellulose nanofibril (CNF) films were here investigated. Hot water extractions of bleached and unbleached kraft pulps were performed in a flow-through system t

Externí odkaz: https://doaj.org/article/56ca3b5739d24cd8babd5e73f3e481ee

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Akademický článek

Enhancing the Stability of Aqueous Dispersions and Foams Comprising Cellulose Nanofibrils (CNF) with CaCO3 Particles

Autor: Tiia-Maria Tenhunen, Tiina Pöhler, Annaleena Kokko, Hannes Orelma, Patrick Gane, Michel Schenker, Tekla Tammelin

Publikováno v: Nanomaterials, Vol 8, Iss 9, p 651 (2018)

In this work, stability of dispersions and foams containing CaCO3-based pigments and cellulose nanofibrils (CNF) was evaluated with the aim to reveal the mechanisms contributing to the overall stability of the selected systems. The utmost interest li

Externí odkaz: https://doaj.org/article/c41f1bff3a484a55a1d2d733e6a42c47

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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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Hybrid films from cellulose nanomaterials—properties and defined optical patterns

Autor: Ilona Leppänen, Ari Hokkanen, Monika Österberg, Mika Vähä-Nissi, Ali Harlin, Hannes Orelma

Publikováno v: Leppänen, I, Hokkanen, A, Österberg, M, Vähä-Nissi, M, Harlin, A & Orelma, H 2022, ' Hybrid films from cellulose nanomaterials—properties and defined optical patterns ', Cellulose, vol. 29, no. 16, pp. 8551-8567 . https://doi.org/10.1007/s10570-022-04795-0

Polymer composites with nanocellulose as the reinforcing agent often lack good compatibility between the two components. In this study, we have combined cellulose nanofibrils (CNFs) and cellulose nanocrystals (CNCs) in different ratios to create all-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14eaece84c7f688ebfa47bb07cee0c8f
https://doi.org/10.1007/s10570-022-04795-0

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Immobilized cellulose nanospheres enable rapid antigen detection in lateral flow immunoassays

Autor: Katariina Solin, Marco Beaumont, Maryam Borghei, Hannes Orelma, Pascal Mertens, Orlando J. Rojas

Publikováno v: Solin, K, Beaumont, M, Borghei, M, Orelma, H, Mertens, P & Rojas, O J 2023, ' Immobilized cellulose nanospheres enable rapid antigen detection in lateral flow immunoassays ', Cellulose, vol. 30, no. 4, pp. 2353–2365 . https://doi.org/10.1007/s10570-022-05038-y

openaire: EC/H2020/760876/EU//INNPAPER | openaire: EC/H2020/788489/EU//BioELCell Funding Information: Authors acknowledge funding by the European Union’s Horizon 2020 research and innovation programme under grant agreement No 760876. Also, funding

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5bb6ef3e35d867b8b4d94aa34beb8bfd
https://aaltodoc.aalto.fi/handle/123456789/119166

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Carboxymethyl Cellulose (CMC) Optical Fibers for Environment Sensing and Short-Range Optical Signal Transmission

Autor: Aayush Kumar Jaiswal, Ari Hokkanen, Markku Kapulainen, Alexey Khakalo, null Nonappa, Olli Ikkala, Hannes Orelma

Publikováno v: Jaiswal, A K, Hokkanen, A, Kapulainen, M, Khakalo, A, Nonappa, N, Ikkala, O & Orelma, H 2022, ' Carboxymethyl Cellulose (CMC) Optical Fibers for Environment Sensing and Short-range Optical Signal Transmission ', ACS Applied Materials & Interfaces, vol. 14, no. 2, pp. 3315-3323 . https://doi.org/10.1021/acsami.1c22227
VTT Technical Research Centre of Finland-PURE
ACS Applied Materials & Interfaces

Optical fibers are a key component in modern photonics, where conventionally used polymer materials are derived from fossil-based resources, causing heavy greenhouse emissions and raising sustainability concerns. As a potential alternative, fibers de

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2f59102db1d1438bdcb41ab9fd2658a
https://doi.org/10.1021/acsami.1c22227

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Improving mechanical performance and functionality of birch veneer with mechano-enzymatic nanocellulose coating

Autor: Hannes Orelma, Vesa Kunnari, Akio Yamamoto, Mikko Valkonen, Lauri Rautkari, Antti Korpela

In this study, we investigated the coating of birch veneers (BVs) with mechano-enzymatically manufactured nanofibrillated cellulose (meNFC) to improve mechanical strength and functionality. The meNFC has a broad particle size distribution and similar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::06638e8b4d48582425a72e69bbbef31d
https://doi.org/10.21203/rs.3.rs-2140955/v1

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Spectroscopic measurement with cellulose optical fiber

Autor: Ari Hokkanen, Markku Kapulainen, Aayush Kumar Jaiswal, Nonappa Nonappa, Olli Ikkala, Hannes Orelma

Publikováno v: Hokkanen, A, Kapulainen, M, Jaiswal, A K, Nonappa, N, Ikkala, O & Orelma, H 2022, ' Spectroscopic measurement with cellulose optical fiber ', Optics and Photonics Days 2022, Tampere, Finland, 6/09/22-8/09/22 .
VTT Technical Research Centre of Finland-PURE

Cellulose is a new promising candidate for biodegradable optical fiber material for sensing applications. Cellulose-based optical fibers have features like fast wetting and drying that commercial glass optical fiber and polymer optical fibers does no

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::db5c4819f85b5ce8a90a34ceff80e4ff
https://cris.vtt.fi/en/publications/2d5b540f-b0d5-4a99-a3fd-b60de1e6f487

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Evaluation of Keratin-Cellulose Blend Fibers as Precursors for Carbon Fibers

Autor: Hilda Zahra, Julian Selinger, Daisuke Sawada, Yu Ogawa, Hannes Orelma, Yibo Ma, Shogo Kumagai, Toshiaki Yoshioka, Michael Hummel

Publikováno v: Zahra, H, Selinger, J, Sawada, D, Ogawa, Y, Orelma, H, Ma, Y, Kumagai, S, Yoshioka, T & Hummel, M 2022, ' Evaluation of Keratin-Cellulose Blend Fibers as Precursors for Carbon Fibers ', ACS Sustainable Chemistry and Engineering, vol. 10, no. 26, pp. 8314-8325 . https://doi.org/10.1021/acssuschemeng.2c00976

openaire: EC/H2020/715788/EU//WoCaFi One main challenge to utilize cellulose-based fibers as the precursor for carbon fibers is their inherently low carbon yield. This study aims to evaluate the use of keratin in chicken feathers, a byproduct of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abbe7d295b54d355b7ed79b8f11b2e17
https://pubmed.ncbi.nlm.nih.gov/35847521

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