Objective UTILIZING A SOPHISTICATED MECHANICAL TESTING SYSTEM, THE ENERGY CONSUMPTION UNDER PLASTIC DEFORMATIONS OF WOOD WILL BE STUDIED UNDER CONDITIONS SIMULATING DEFIBRATION. THUS BY CONTINUOUSLY REGISTERING THE CHANGES IN MECHANICAL PROPERTIES, THE ENERGY PUT INTO THE WOOD AND THE ENERGY ABSORBED DURING FATIGUE OF THE WOOD, THE WORK NEEDED TO STRUCTURALLY CHANGE THE WOOD CAN BE QUANTIFIED. THE EFFECT ON ENERGY CONSUMPTION OF LOADING MODE OF VARIOUS COMBINATIONS OF SMALL AND LARGE SCALE DEFORMATIONS WILL BE INVESTIGATED AND OPTIMIZED WITH RESPECT TO TEMPERATURE AND FREQUENCY. FURTHERMORE THE FOLLOWING CASES WILL BE STUDIED: - EFFECT OF COMBINATION OF VARIOUS AMPLITUDES - EFFECT OF MECHANICAL PREDESTRUCTION - EFFECT OF CHEMICAL ENVIRONMENT, PH, ION STRENGTH - EFFECT OF CHEMICAL PRETREATMENTS THE CHARACTERIZATION OF THE STRUCTURAL CHANGES OF THE FIBRES DURING REFINING IS OF VITAL IMPORTANCE IN UNDERSTANDING THE EFFECT OF THE MECHANICAL REFINING ACTION. THESE CHANGES INCLUDE INCREASED FIBRE FLEXIBILITY, CHANGES IN SPECIFIC SURFACE AREA AND INCREASED SWELLING ABILITY. IN ORDER TO CORRELATE THE FIBRE SEPARATION AND THE FIBRILLATION OF THE FIBRE WITH AN EFFECTIVE ENERGY CONSUMPTION, THE FOLLOWING PHYSICAL PROPERTIES WILL BE STUDIED: - SPECIFIC SURFACE AREA - ACCESSIBILITY - FRACTURE SURFACES - ADHESION PROPERTIES Programme(s) PRE-RAWMAT 2C - Research and development programme (EEC) in the raw materials sector, 1982-1985 Topic(s) Data not available Call for proposal Data not available Funding Scheme Data not available Coordinator SWEDISH FOREST PRODUCTS RESEARCH LAB. EU contribution No data Address BOX-5604 86 STOCKHOLM Sweden See on map Total cost No data
