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Structural characterization of polymer–liquid crystal dispersions
Author(s) -
Bermudez M D,
CarrionVilches F J,
Cervantes J J
Publication year - 2002
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.979
Subject(s) - thermotropic crystal , materials science , polystyrene , polymer , liquid crystal , polyamide , copolymer , acrylonitrile , composite material , styrene , characterization (materials science) , polymer blend , polymer chemistry , scanning electron microscope , chemical engineering , liquid crystalline , nanotechnology , optoelectronics , engineering
Abstract Liquid crystalline antiwear fillers were added to thermoplastics such as polystyrene (PS), styrene–acrylonitrile copolymer (SAN) and polyamide 6 (PA). A 1 wt% proportion of thermotropic liquid crystal (LC) 4,4′‐dibutylazobenzene was added to the polymers in powder form and the mixtures were milled. In the case of PS, 10 wt% LC mixtures were also prepared. PS/LC and SAN/LC blends were compression moulded and PA/LC blends were injection moulded from the melt to obtain the modified materials. Cross sections and fracture surfaces were obtained and studied by optical and electron microscopy. Liquid crystal distribution within the polymer matrix depends on the base polymer, the additive proportion and the processing route. © 2002 Society of Chemical Industry