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The nature and location of SEBS–MA compatibilizer in polyethylene–wood flour composites
Author(s) -
Oksman Kristiina,
Lindberg Henrik,
Holmgren Allan
Publication year - 1998
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/(sici)1097-4628(19980705)69:1<201::aid-app23>3.0.co;2-0
Subject(s) - materials science , copolymer , maleic anhydride , composite material , polyethylene , wood flour , low density polyethylene , fourier transform infrared spectroscopy , composite number , styrene , polymer chemistry , polymer , chemical engineering , engineering
A maleic‐anhydride‐grafted styrene–ethylene—butylene–styrene (SEBS–MA) triblock copolymer has been used as a compatibilizer in low‐density polyethylene–wood flour (LDPE–WF) composite system. The location of compatibilizer was studied using transmission electron microscopy (TEM). The unsaturated parts of the copolymer were stained with osmium tetraoxide (OsO 4 ) to enhance contrast between the different phases. TEM micrographs indicated that part of the compatibilizer was located at the interface between the wood particles and PE matrix and that wood was also stained by the OsO 4 . The nature of the interface between the wood surface and the SEBS–MA was studied using Fourier transform infrared spectroscopy (FTIR). The results indicated that MA reacts with wood through esterification and hydrogen bonding and also possibly through interaction between the styrene and wood. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 201–209, 1998