Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Seppo, Andersson"'
Publikováno v:
February 2018. 17:81-88
Super-swollen hydrogels were prepared in vitro from lignocelluloses of various origins via direct dissolving in N,N-dimethylacetamide/lithium chloride (DMAc/LiCl) followed by regeneration from solutions. The hydrogels retained a large amount of water
Autor:
Raili Pönni, Tuomas Hänninen, Ritva Serimaa, Haiqing Ren, Pekka Saranpää, Marko Mononen, Seppo Andersson, Yurong Wang
Publikováno v:
Journal of Integrative Plant Biology. 57:388-395
We studied in detail the mean microfibril angle and the width of cellulose crystals from the pith to the bark of a 15-year-old Maidenhair tree (Ginkgo biloba L.). The orientation of cellulose microfibrils with respect to the cell axis and the width a
Publikováno v:
Wood Science and Technology. 46:317-332
The relationship between the nanostructure of Moso bamboo (Phyllostachys edulis (Carr.) H. De Lehaie) and the radial distance from the lacuna and the age of the culm was studied using X-ray scattering and electron microscopy. The size of cellulose cr
Autor:
Matti Knaapila, N. E. Kotelnikova, Kirsi Leppänen, Seppo Andersson, Mika Torkkeli, Ritva Serimaa
Publikováno v:
Cellulose. 16:999-1015
The structure of microcrystalline cellulose (MCC) made by mild acid hydrolysis from cotton linter, flax fibres and sulphite or kraft cooked wood pulp was studied and compared with the structure of the starting materials. Crystallinities and the lengt
Autor:
Marko Peura, Seppo Andersson, Ari Salmi, Mika Torkkeli, Ritva Serimaa, Edward Hæggström, Timo Karppinen
Publikováno v:
Materials Science Forum. 599:126-136
The excellent mechanical properties of wood arise from its cellular and cell wall structure. X-ray scattering, ultrasound, and mechanical testing is combined to study the effects of strain on crystalline cellulose in wood. Results for dry and re-mois
Autor:
J. Laukkanen, Kim Nygård, Ritva Serimaa, Timo Paakkari, Matti-Paavo Sarén, Marko Peura, Seppo Andersson, Keijo Hämäläinen, Pekka Saranpää
Publikováno v:
Trees. 22:499-510
Relationships between the elemental composition, the microfibril angle (MFA) distribution and the average shape of the cell cross-section of irrigated-fertilised and untreated Norway spruce (Picea abies [L.] Karst.) earlywood were studied. Sample mat
Publikováno v:
Trees - Structure and Function. 18:354-362
The variation of the mean microfibril angle (MFA) and the shape of the cross-section of lumen with the distance from the pith in fast grown Norway spruce were studied by X-ray scattering and optical microscopy. The samples were from stems of a clone
Publikováno v:
Trees - Structure and Function. 18:346-353
The variation in the mass fraction of crystalline cellulose (crystallinity of wood), the intrinsic crystallinity of cellulose, and the thickness of cellulose crystallites in early wood of Norway spruce [Picea abies (L.) Karst.], and Scots pine (Pinus
Publikováno v:
Journal of Wood Science. 49:531-537
X-ray diffraction was used to study variations in the crystallinity of wood and the average thickness and length of the crystallites of cellulose as a function of the number of the year ring in Norway spruce [Picea abies (L.) Karst.]. The crystallini
Autor:
Seppo, Andersson, Yurong, Wang, Raili, Pönni, Tuomas, Hänninen, Marko, Mononen, Haiqing, Ren, Ritva, Serimaa, Pekka, Saranpää
Publikováno v:
Journal of integrative plant biology. 57(4)
We studied in detail the mean microfibril angle and the width of cellulose crystals from the pith to the bark of a 15-year-old Maidenhair tree (Ginkgo biloba L.). The orientation of cellulose microfibrils with respect to the cell axis and the width a