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Effect of surface modification of beech wood flour on mechanical and thermal properties of poly (3-hydroxybutyrate)/wood flour composites
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Published/Copyright:
June 29, 2009
Abstract
Poly (3-hydroxybutyrate) (PHB), a biodegradable polymer from the polyhydroxyalkanoate biopolyester class, was filled with 20% beech wood flour (WF) to form completely biodegradable films. In the present study, the influence of surface modification of wood flour was investigated on the interfacial adhesion of PHB/WF composites. In addition to a hydrothermal pretreatment, sodium hydroxide and stearic acid were used as surface modifiers. Direct measurement of interfacial adhesion was carried out by mechanical testing and dynamic mechanical analysis. Thermal properties, degree of crystallinity of PHB/WF composites were determined by differential scanning calorimetry. Effects of sodium hydroxide and stearic acid treatment on the adhesion of PHB/WF interface were feeble when no hydrothermal pretreatment was applied. Nevertheless, surface modifiers applied on hydrothermally pretreated WF significantly improved the WF/PHB interface adhesion.
Received: 2008-12-11
Accepted: 2009-4-16
Published Online: 2009-06-29
Published Online: 2009-06-29
Published in Print: 2009-09-01
©2009 by Walter de Gruyter Berlin New York
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- Meetings
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Keywords for this article
biodegradable polymer;
composites;
mechanical properties;
thermal properties;
wood flour
Articles in the same Issue
- Original Papers
- Orientation of the wood polymers in the cell wall of spruce wood fibres
- MEA/water/AQ-pulping of wheat straw
- Catalytic hydrogenolysis of ethanol organosolv lignin
- The influence of mannanase and endoglucanase treatment on the fibre stability of spruce CTMP
- TEMPO-mediated oxidation of softwood thermomechanical pulp
- Ozone pretreatment of lignocellulosic materials for ethanol production: Improvement of enzymatic susceptibility of softwood
- A preliminary study of green production of fiberboard bonded with tannin and laccase in a wet process
- Extractives in bark of different conifer species growing in Pakistan
- Chelating and antioxidant activity of lignans from Chilean woods (Cupressaceae)
- Effect of surface modification of beech wood flour on mechanical and thermal properties of poly (3-hydroxybutyrate)/wood flour composites
- Microwave radar for detection of resin defects in Pinus elliottii Engelm var elliottii
- Reconstruction of 3D images of internal log characteristics by means of successive 2D log computed tomography images
- Synchrotron X-ray microtomography and 3D image analysis of medium density fiberboard (MDF)
- Non-destructive determination and quantification of diffusion processes in wood by means of neutron imaging
- Application of the end loaded split and single-leg bending tests to the mixed-mode fracture characterization of wood
- Poisson's ratio of plywood measured by tension test
- Characterizing hydro-thermal compression behavior of aspen wood strands
- Decay resistance of acetylated and hexanoylated hardwood and softwood species exposed to Coniophora puteana
- Chemical improvement of surfaces. Part 1: Novel functional modification of wood with covalently bound organoboron compounds
- Primary and secondary decay fungi on exposed pine tree logs in the forest
- Resistance of thermo-hygro-mechanically (THM) densified wood to degradation by white rot fungi
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