By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Nanotechnology have been published. According to news reporting originating from Turku, Finland, by NewsRx correspondents, research stated, "Pressurized hot water extraction with a flow-through system was used to extract hemicelluloses and lignin from birch sawdust. The structure of the extraction residue was studied on various levels."
Our news editors obtained a quote from the research from Abo Akademi University, "Molecular mass distributions were determined with gel permeation chromatography and the crystal structure of cellulose was characterized using wide-angle X-ray scattering (WAXS). Information on the short-range order of cellulose microfibrils and on the nanoscale pore structure was obtained with small-angle X-ray scattering (SAXS), and the micrometre scale cellular morphology was imaged with X-ray microtomography. The pressurized hot water treatment was observed to increase the lateral width of cellulose crystallites, determined with WAXS, whereas a possible small decrease in the crystallinity of cellulose compared to native wood was detected. The molecular mass of cellulose remained at a relatively high level. According to the SAXS results, a tighter lateral association of cellulose microfibrils was observed in the extracted samples, which possibly led to opening of pores between bundles of microfibrils, as indicated by an increased specific surface area."
According to the news editors, the research concluded: "A reduction in the thickness of the fibre cell walls was evidenced by X-ray microtomography."
For more information on this research see: Effects of pressurized hot water extraction on the nanoscale structure of birch sawdust. Cellulose, 2013;20(5):2335-2347. Cellulose can be contacted at: Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands. (Springer - www.springer.com; Cellulose - www.springerlink.com/content/0969-0239/)
The news editors report that additional information may be obtained by contacting P.A. Penttila, Abo Akad University, Proc Chem Center, SF-20500 Turku, Finland. Additional authors for this research include P. Kilpelainen, L. Tolonen, J.P. Suuronen, H. Sixta, S. Willfor and R. Serimaa (see also technology.html">Nanotechnology).
Keywords for this news article include: Turku, Europe, Finland, Nanoscale, Nanotechnology, Emerging Technologies
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