Effect of Synthesis Time on Morphology of Hollow Porous Silica Microspheres

Autor: Qian CHEN, Juha LARISMAA, Anu KESKI-HONKOLA, Kati VILONEN, Outi SÖDERBERG, Simo-Pekka HANNULA

Publikováno v: Medžiagotyra, Vol 18, Iss 1, Pp 66-71 (2012)

Hollow porous silica microspheres may be applicable as containers for the controlled release in drug delivery systems (DDS), foods, cosmetics, agrochemical, textile industry, and in other technological encapsulation use. In order to control the surfa

Externí odkaz: https://doaj.org/article/5dd63d62a47c406cbe036c5f62fd486b

The Effect of Fire Retardants on the Fire Resistance of Unsaturated Polyester Resin Coating

Autor: Qian Chen, Juha Larismaa, Simo-Pekka Hannula, Harri Lipiäinen

Publikováno v: Key Engineering Materials. 674:277-282

Unsaturated polyester resins (UPRs) are most commonly used coating materials on steel among thermosetting polymers because of their low cost, easy application and good performance properties. However, UPRs show insufficient fire-resistance in respect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71d71de9469dddddbe02e4015f98f5b5
https://doi.org/10.4028/www.scientific.net/kem.674.277

Control of the Size of Silver Nanoparticles and Release of Silver in Heat Treated SiO2-Ag Composite Powders

Autor: Juha Larismaa, Saima Ali, Henrika Granbohm, Leena-Sisko Johansson, Simo-Pekka Hannula

Publikováno v: Materials, Vol 11, Iss 1, p 80 (2018)
Materials; Volume 11; Issue 1; Pages: 80

The growth of silver nanoparticles, the activation energy for silver particle growth, and the release of silver species in heat treated SiO 2 -Ag composite powders are investigated. The silver particle growth is controlled by heat treatment for 75 mi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ab13ae613d3e291952579e7eb68df79
http://www.mdpi.com/1996-1944/11/1/80

Processing and Characterization of Porous Silica-Ag-Nanoparticle Composites Produced by Pulsed Electric Current Sintering

Autor: Juha Larismaa, Outi Söderberg, Eero Haimi, Jesse Syrén, Simo-Pekka Hannula

Publikováno v: Key Engineering Materials. 527:38-43

This paper studies influence of the process temperature and time on the properties of the compacts made of Ag-SiO2 powder by the pulsed electric current sintering (PECS). Silica particles doped with Ag nanoparticles were prepared by modified Stöber

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::59309d8073a7e3a9040011f62a5a7df3
https://doi.org/10.4028/www.scientific.net/kem.527.38

Optical and structural properties of nanocrystalline anatase (TiO2) thin films prepared by non-aqueous sol-gel dip-coating

Autor: H. Lipsonen, Eero Haimi, Juha Larismaa, J. Krzak-Ros, M. Kapulainen, Simo-Pekka Hannula

Publikováno v: Haimi, E, Lipsonen, H, Larismaa, J, Kapulainen, M, Krzak-Ros, J & Hannula, S-P 2011, ' Optical and structural properties of nanocrystalline anatase (TiO 2 ) thin films prepared by non-aqueous sol-gel dip-coating ', Thin Solid Films, vol. 519, no. 18, pp. 5882-5886 . https://doi.org/10.1016/j.tsf.2011.02.091

Anatase (TiO2) thin films were grown by non-aqueous sol-gel dip-coating using titanium (IV) n-butoxide as precursor and 1-butanol as solvent. High withdrawal speed of 4.7 mm/s in dip-coating resulted in defect free films of 100 nm average film thickn

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76174493ac45de5b220ab14fb4a6b447
https://cris.vtt.fi/en/publications/1a8f5848-ae3a-4d65-85f5-3e6b5147224a