Effects of vitamin E combined with antioxidants on wood flour/polypropylene composites during accelerated weathering
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Yao Peng
und
Xi Guo
Abstract
The aim of this research was to investigate the influence of different antioxidant systems containing vitamin E (VE) and antioxidant 168 (AO) on the photodegradation of wood flour/polypropylene (WF/PP) composites, as well as to provide insight into the processes taking place in these systems during weathering. Five groups of composites were treated in a QUV accelerated weathering tester for a total of 960 h. The surface color and the flexural properties of the weathered samples were tested. Additionally, the weathered surface was characterized by SEM, ATR-FTIR, and XPS. The results were: (1) composites with VE and AO showed less loss of flexural strength and modulus, as well as less color fading and fewer cracks on weathered surfaces than surfaces without antioxidants; (2) AO reacted with hydroperoxide and quinones and showed a synergistic effect with VE to further improve the anti-weathering ability of the composites; (3) 0.2% VE and 1.0% AO was the optimal formulation, yielding the best anti-weathering properties among all.
Acknowledgments
This study was financially supported by the Fundamental Research Fund for the Central Universities (TD2011-14) in China.
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©2015 by De Gruyter
Artikel in diesem Heft
- Frontmatter
- Original Articles
- Influence of spruce xylan characteristics on tensile strength of spruce kraft pulp
- Evidence for a very slow disaggregation of lignosulfonates
- Slow relaxation mode of sodium lignosulfonate in saline solutions
- Influence of carboxylic group content on the solution behavior of carboxymethylated lignin (CML) in water
- Chemithermomechanical and kraft pulping of Pinus radiata wood chips after the hydrothermal extraction of hemicelluloses
- In-plane shear strength of paper measured by asymmetric four-point bending test
- Strain distribution and load transfer in the polymer-wood particle bond in wood plastic composites
- Structural changes in spruce wood during different steps of steam explosion pretreatment
- A critical review of the multilayer sorption models and comparison with the sorption site occupancy (SSO) model for wood moisture sorption isotherm analysis
- Hygric properties of Norway spruce and sycamore after incubation with two white rot fungi
- On-line monitoring of hygroscopicity and dimensional changes of wood during thermal modification by means of neutron imaging methods
- Influence of blue stain on density and dimensional stability of Pinus radiata timber from northern Galicia (Spain)
- Bacterial and abiotic decay in waterlogged archaeological Picea abies (L.) Karst studied by confocal Raman imaging and ATR-FTIR spectroscopy
- Effects of vitamin E combined with antioxidants on wood flour/polypropylene composites during accelerated weathering
- Short Note
- Tensile behaviour and fracture mechanism of moso bamboo (Phyllostachys pubescens)
- Lignin masks the presence of fibrillar network structure in the cell corner middle lamella (CCML)
Artikel in diesem Heft
- Frontmatter
- Original Articles
- Influence of spruce xylan characteristics on tensile strength of spruce kraft pulp
- Evidence for a very slow disaggregation of lignosulfonates
- Slow relaxation mode of sodium lignosulfonate in saline solutions
- Influence of carboxylic group content on the solution behavior of carboxymethylated lignin (CML) in water
- Chemithermomechanical and kraft pulping of Pinus radiata wood chips after the hydrothermal extraction of hemicelluloses
- In-plane shear strength of paper measured by asymmetric four-point bending test
- Strain distribution and load transfer in the polymer-wood particle bond in wood plastic composites
- Structural changes in spruce wood during different steps of steam explosion pretreatment
- A critical review of the multilayer sorption models and comparison with the sorption site occupancy (SSO) model for wood moisture sorption isotherm analysis
- Hygric properties of Norway spruce and sycamore after incubation with two white rot fungi
- On-line monitoring of hygroscopicity and dimensional changes of wood during thermal modification by means of neutron imaging methods
- Influence of blue stain on density and dimensional stability of Pinus radiata timber from northern Galicia (Spain)
- Bacterial and abiotic decay in waterlogged archaeological Picea abies (L.) Karst studied by confocal Raman imaging and ATR-FTIR spectroscopy
- Effects of vitamin E combined with antioxidants on wood flour/polypropylene composites during accelerated weathering
- Short Note
- Tensile behaviour and fracture mechanism of moso bamboo (Phyllostachys pubescens)
- Lignin masks the presence of fibrillar network structure in the cell corner middle lamella (CCML)
