To improve the interfacial compatibility between wood fibers and polypropylene and the toughness of wood-fiber/polypropylene composites, maleic anhydride grafted polypropylene (PP-g-MAH) and maleic anhydride grafted styrene-ethylene-butadiene-styrene copolymers (SEBS-g-MAH) were used as modifiers. Mechanical properties of wood-fiber/polypropylene (WF/PP) composites were improved when PP-g-MAH or SEBS-g-MAH was added. When either of these copolymers was added, the composites had better interfacial compatibility than the unmodified composite. This was verified by scanning electron microscope (SEM) observations and dynamic mechanical analysis (DMA). The mechanical properties of the composites were significantly improved because of the good interfacial bonding between wood fibers and polypropylene when PP-g-MAH and SEBS-g-MAH were added.
DANG Wenjie, SONG Yongming, WANG Qingwen, WANG Weihong
. Improvement in compatibility and mechanical properties
of modified wood fiber/polypropylene composites[J]. Frontiers of Forestry in China, 2008
, 3(2)
: 243
-247
.
DOI: 10.1007/s11461-008-0021-z
1. Clemons C 2002 Wood-plastic composites in the United States: the interfacingof two industriesFor Prod J2(6)1118
2. Du L L Jin Y Zheng T L 2002 Advance in application of SEBS in blendsof PPChina Synthetic Resin Plast19(5)6064 (in Chinese)
3. Gao J She W N 2004 New thermoplasticelastomer SEBSNew Chem Mater32(4)2124 (in Chinese)
4. Guo B H Chen J Zhou N Hua Z S Xie X M 2002 Preparation of high performanceplant-fiber reinforced polypropyleneEngPlast Appl30(7)1315 (in Chinese)
5. Hristov V Vasileva S 2003 Dynamic mechanicaland thermal properties of modified polypropylene wood fiber compositesMacromol Mater Eng288(10)798806. doi:10.1002/mame.200300110
6. Oksman K Clemons C 1998 Mechanicalproperties and morphology of impact modified polypropylene-wood flourcompositesJ Appl Polym Sci67(9)15031513. doi:10.1002/(SICI)1097‐4628(19980228)67:9<1503::AID‐APP1>3.0.CO;2‐H
7. Qin T F 2002 Effect of wood powder content on properties of wood powder-polypropylenecompositesChina Wood Ind16(5)1720 (in Chinese)
8. Qin T F Yan H P 1999 Study on themechanism of wood surface non-polarization part I. changes of chemicalfunctional group in the process of wood acetylationChina Wood Ind13(4)1720 (in Chinese)
9. Raj R G Kokta B V Daneault C 1989 Effect of chemical treatment of the fiberson the mechanical properties of polyethylene-wood fiber compositesJ Adhes Sci Tech3(1)5564
10. The State Bureau ofQuality and Technical Supervision. 1992 GB/T1040-1992Plastic-determination of Tensile PropertiesBeijingStandards Press of China (in Chinese)
11. The State Bureau ofQuality and Technical Supervision. 1993 GB/T 1043-1993Plastic-determination of Charpy Impact Strength of Rigid MaterialsBeijingStandardsPress of China (in Chinese)
12. The State Bureau ofQuality and Technical Supervision. 2000 GB/T 9341-2000.Plastic-determination of flexible propertiesBeijingStandards Press of China (in Chinese)
13. Winandy J E Stark N M Clemons C 2004 Considerations in recycling of wood-plasticcompositesIn: 5th Global Wood and NaturalFiber Composites SymposiumKassel,Germany19
14. Wu J S Yu D M Chan C M Kim J Mai Y W 2000 Effect of fiber pretreatmentcondition on the interfacial strength and mechanical properties ofwood fiber/PP compositesJ Appl Polym Sci76(7)10001010. doi:10.1002/(SICI)1097‐4628(20000516)76:7<1000::AID‐APP3>3.0.CO;2‐X
15. Zang K F Xiang S Y Lu P Deng X J 2001 Properties of pine wood powder filled polypropyleneChina Plast15(12)7173 (in Chinese)
16. Zhang G W Guan G H Hu Z M Liu Z F 2004 Study on structure and properties of (maleic anhydride)-grafted-polypropylenefiberSynthetic Fiber China4(3)46 (in Chinese)
