Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Viitala, Janika"'
Autor:
Koponen, Antti I., Viitala, Janika, Tanaka, Atsushi, Prakash, Baranivignesh, Laukkanen, Olli-Ville, Jäsberg, Ari
Publikováno v:
In Chemical Engineering Science 5 January 2024 283
Publikováno v:
Jäsberg, A, Viitala, J, Tanaka, A, Prakash, B & Koponen, A I 2023, ' Pipe rheology of wet coating foams ', 11th World Congress of Chemical Engineering, WCCE11, Buenos Aires, Brazil, 4/06/23-8/06/23 .
ObjectivesIn paper and board making, additives have traditionally been added to the pulp suspension before forming. More recently, spray coating of the additives has been developed, which gives such advantages as increased mechanical retention and be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=355e65625b88::d594bb5e80985fc2a5ac17d86335890e
https://cris.vtt.fi/ws/files/82382565/Pipe_rheology_of_wet_coating_foams_revised2.pdf
https://cris.vtt.fi/ws/files/82382565/Pipe_rheology_of_wet_coating_foams_revised2.pdf
Publikováno v:
Prakash, B, Viitala, J, Kiiskinen, H & Koponen, A I 2023, ' Mixing of high-consistency fiber-foam suspensions ', 11th World Congress of Chemical Engineering, WCCE11, Buenos Aires, Brazil, 4/06/23-8/06/23 .
Foam-forming has been gaining attention recently to manufacture sustainable packaging and cushioning products in various sectors, including food, automobile and construction [1]. Conventionally, foam suspension is made in a mixing tank at a lower fib
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=355e65625b88::f3253b952f0d17ec2772e12ff2976094
https://cris.vtt.fi/en/publications/23202cd5-ec5b-4b10-a499-f1a1872505d2
https://cris.vtt.fi/en/publications/23202cd5-ec5b-4b10-a499-f1a1872505d2
Akademický článek
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Autor:
Jäsberg, Ari, Viitala, Janika, Tanaka, Atsushi, Prakash, Barani, Laukkanen, Olli-Ville, Koponen, Antti I.
Publikováno v:
Jäsberg, A, Viitala, J, Tanaka, A, Prakash, B, Laukkanen, O-V & Koponen, A I 2023, ' Flow rheology of polyvinyl alcohol-based wet aqueous foams ', 32nd Nordic Rheology Conference, Aarhus, Denmark, 12/04/23-14/04/23 .
Recent studies have shown that foam-assisted application of additives into a wet web has advantages over the conventional way of adding the chemicals into the pulp suspension before forming, e.g., increased mechanical retention as well as high dosage
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=355e65625b88::5ac067576c181a53ba06acd4c803f57f
https://cris.vtt.fi/en/publications/b373cbb2-5331-4af1-b01c-40bf15c647d4
https://cris.vtt.fi/en/publications/b373cbb2-5331-4af1-b01c-40bf15c647d4
Autor:
Viitala, Janika1 janika.viitala@vtt.fi, Lappalainen, Timo1 timo.lappalainen@vtt.fi, Järvinen, Marjo1 marjo.jarvinen@vtt.fi
Publikováno v:
Nordic Pulp & Paper Research Journal. 2020, Vol. 35 Issue 2, p261-271. 11p.
Akademický článek
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Publikováno v:
Viitala, J, Lappalainen, T & Järvinen, M 2020, The use of co-surfactant to prevent the precipitation of an anionic surfactant in foam forming . in J Kouko, J Lehto & T Tuovinen (eds), Progress in Paper Physics Seminar : Abstract book of the PPPS2020 seminar . VTT Technical Research Centre of Finland, Espoo, VTT Technology, no. 378, pp. 293-295, Progress in Paper Physics Seminar, PPPS 2020, Jyväskylä, Finland, 1/09/20 . < https://publications.vtt.fi/pdf/technology/2020/T378.pdf >
The precipitation of an anionic surfactant due to hard water can cause problems in foam forming process. Addition of a nonionic or a zwitterionic surfactant as a cosurfactant with the anionic surfactant inhibits the precipitation of the anionic surfa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=355e65625b88::c1729fdb37189514d44e94ad15a5c598
https://cris.vtt.fi/en/publications/927bcb13-5028-4f07-9cd0-26615a75ac66
https://cris.vtt.fi/en/publications/927bcb13-5028-4f07-9cd0-26615a75ac66
Autor:
Kamppuri, Taina, Heikkilä, Pirjo, Pitkänen, Marja, Hinkka, Ville, Viitala, Janika, Cura, Kirsti, Zitting, Jaakko, Lahtinen, Teijo, Knuutila, Henna, Lehtinen, Liisa
Publikováno v:
Kamppuri, T, Heikkilä, P, Pitkänen, M, Hinkka, V, Viitala, J, Cura, K, Zitting, J, Lahtinen, T, Knuutila, H & Lehtinen, L 2019, Tunnistusteknologiat tekstiilien kierrätyksessä . VTT Tutkimusraportti, no. VTT-R-00092-19, VTT Technical Research Centre of Finland, Espoo .
Tässä raportissa kartoitetaan tekstiilijätteen koneelliseen tunnistukseen soveltuvia tunnistustekniikoita. Tekstiilijätteessä on useita eri polymeerimateriaaleja. Materiaalien lajittelu nostaa materiaalin jalostusarvoa, varmistaa sen soveltuvuud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=355e65625b88::4147c71a0ab0120b4a95cc68255e8450
https://cris.vtt.fi/ws/files/24214371/VTT_R_00092_19.pdf
https://cris.vtt.fi/ws/files/24214371/VTT_R_00092_19.pdf