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Effects of silane and MAPE coupling agents on the properties and interfacial adhesion of wood‐filled PVC/LDPE blend
Author(s) -
Prachayawarakorn J.,
Khunsumled S.,
Thongpin C.,
Kositchaiyong A.,
Sombatsompop N.
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.27973
Subject(s) - silane , materials science , composite material , low density polyethylene , polyethylene , sawdust , ultimate tensile strength , chemistry , organic chemistry
Composite samples were prepared from Poly(vinyl chloride)/low‐density polyethylene (PVC/LDPE) blend, compatibilized by PA20 (methyl methacrylate‐ co ‐butyl acrylate copolymer), and reinforced by different levels of rubber‐wood sawdust. To improve the mechanical properties of the composites, Silane A‐137 (Octyltriethoxy silane), Silane A‐1100 (γ‐aminopropyltriethoxy silane), or MAPE (maleic anhydride‐grafted‐polyethylene) were introduced. It was found that the additions of Silane A‐137, Silane A‐1100, and MAPE could improve tensile and impact properties of the composites, regardless of the sawdust contents. Physical or chemical interactions for all coupling agents with the wood‐PVC/LDPE composites used were proposed in this work. Silane A‐137 or MAPE tended to give better improvement in the mechanical properties of the composites than Silane A‐1100, because of the presence of the nonpolar chain ends of Silane A‐137 or MAPE molecules. Besides, the addition of either Silane A‐137 and MAPE or Silane A‐1100 and MAPE at different ratios into the wood‐PVC/LDPE composites was also studied. The experimental results suggested that the optimum mechanical properties could be obtained using Silane A‐137 : MAPE of 1% : 2% wt sawdust. The morphological and thermal properties of the composites were also examined using SEM and DMA techniques, respectively. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008