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Pinewood (Pinus sylvestris L.) was thermally modified at temperatures of 160ºC and 200ºC for 2, 6 and 10 hour periods, respectively. The severe conditions of the heat treatment resulted in decreased mechanical properties (compressive strength and modulus of elasticity) and a decrease in the degree of cellulose polymerization. A comparison of selected mechanical properties and the degree of cellulose polymerization indicated that there was a relationship between them and the temperature and duration of the heat treatment.
Słowa kluczowe
Rocznik
Tom
Strony
49--57
Opis fizyczny
Bibliogr. 24 poz., rys.
Twórcy
autor
- Department of Wood Science and Wood Protection, Faculty of Wood Technology, Warsaw University of Life Sciences, Warsaw, Poland
autor
- Department of Production Management and Engineering, Faculty of Production Engineering, Warsaw University of Life Sciences, Warsaw, Poland
autor
- Department of Wood Science and Wood Protection, Faculty of Wood Technology, Warsaw University of Life Sciences, Warsaw, Poland
autor
- Department of Wood Science and Wood Protection, Faculty of Wood Technology, Warsaw University of Life Sciences, Warsaw, Poland
autor
- Department of Wood Science and Wood Protection, Faculty of Wood Technology, Warsaw University of Life Sciences, Warsaw, Poland
Bibliografia
- Antczak A., Radomski A., Zawadzki J. [2006]: Benzene Substitution in Wood Analysis. Annals of Warsaw Agricultural University, Forestry and Wood Technology 58: 15-19
- Bikova T., Treimanis A. [2002]: Problems of the MMD analysis of cellulose by SEC using DMA/LiCl: A review. Carbohydrate Polymers 48: 23-28
- Ding H.-Z., Wang Z.D. [2008]: On the degradation evolution equations of cellulose. Cellulose 15: 205-224
- Dupont A.L., Mortha G. [2004]: Comparative evaluation of size-exclusion chromatography and viscometry for the characterization of cellulose. Journal of Chromatography A 1026: 129-141
- Emsley A.M., Heywood R.J., Ali M., Eley C.M. [1997]: On the kinetics of degradation of cellulose. Cellulose 4: 1-5
- Fengel D. [1967]: On the changes of the wood and its components within the temperature range up to 200ºC Part IV. The behaviour of cellulose in spruce wood under thermal treatment. Holz als Roh und Werkstoff 23: 102-111
- Gawron J., Grześkiewicz M., Zawadzki J., Zielenkiewicz T., Radomski A. [2011]: The influence of time and temperature of beech wood (Fagus sylvatica L.) heat treatment in superheated steam on the carbohydrates content. Wood Research 56: 213-220
- Gawron J., Antczak A., Borysiak S., Zawadzki J., Kupczyk A. [2014]: The study of glucose and xylose content by acid hydrolysis of ash wood (Fraxinus exclesior L.) after thermal modification in nitrogen by HPLC method. BioResources 9: 3197-3210
- Hill D.J.T., Le T.T., Darveniza M., Saha T. [1995]: A study of degradation of cellulosic insulation materials in a power transformer, part 1. Molecular weight study of cellulose insulation paper. Polymer Degradation and Stability 48: 79-87
- Kacikova D., Kacik F., Cabalova I., Durkovic J. [2013]: Effects of thermal treatment on chemical, mechanical and colour traits in Norway spruce wood. Bioresource Technology 144: 669-674
- Kubojima Y., Okano T., Ohta M. [2000]: Bending strength and toughness of heat treated wood. Journal of Wood Science 46: 8-15
- Mitchell P. H. [1988]: Irreversible property changes of small loblolly pine specimens heated in air, nitrogen, or oxygen. Wood and Fiber Science 20: 320-355
- Rowell R., Lange S., McSweeny J., Davis. M. [2002]: Modification of wood fiber using steam. Wood Science and Engineering Department, Oregon State University, Corvallis, USA
- Schneider A., Rusche H. [1973]: Sorption-behaviour of beech- and sprucewood after heat treatments in air and absence of air. Holz Als Roh- und Werkstoff 31: 313-319
- Stem A.J., Hansen L.A [1937]: Minimizing wood shrinkage and swelling: Effects of heating in various gases. Industrial and Engineering Chemistry 29: 831-833
- Strlič M., Kolar J., Pihlar B., Rychlý J., Matisová-Rychlá L. [2001]: Initial degradation processes of cellulose at elevated temperatures revisited – chemiluminescence evidence. Polymer Degradation and Stability 72: 157-162
- Timpa J.D. [1991]: Application of universal calibration in gel permeation chromatography for molecular weight determinations of plants cell wall polymers; cotton fibre. Journal of Agricultural and Food Chemistry 36: 270-275
- Viitaniemi P., Jämsä S., (1996). Modification of Wood with Heat Treatment. VTT Research Report Publications 814, VTT, Finland, 53
- Yildiz S., Gumuskaya E. [2007]: The effects of heat treatment on crystalline structure of cellulose in soft and hardwood. Building and Environment 42: 62-67
- Yildiz S., Gezer E.D., Yildiz U. [2006]: Mechanical and chemical behavior of spruce wood modified by heat. Building and Environment 41: 1762-1766
- Zickler G.A., Wagermaier W., Funari S.S., Burghammer M., Paris O. [2007]: In situ Xray diffraction investigation of thermal decomposition of wood cellulose. Journal of Analytical and Applied Pyrolysis 80: 134-140
- Zou X., Garnugul N., Uesaka T., Bouchard J. [1994]: Accelerated ageing of papers of pure cellulose – mechanism of cellulose degradation and paper embrittlement. Polymer Degradation and Stability 43: 393-402
- Zawadzki J., Grześkiewicz M., Gawron J., Zielenkiewicz T. [2007]: Chemical behavior of pine wood (Pinus silvestris L.) modified by heat. Annals of Warsaw University of Life Sciences, Forestry and Wood Technology 62: 380-383
- Zawadzki J., Radomski A., Gawron J. [2013]: The effect of heat treatment on selected physical properties of wood of Scots pine (Pinus sylvestris L.). Wood Research 58: 243-250
Uwagi
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-c59ebb39-dd1c-4d3b-91ce-bd3d1483b6b7
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