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Preparation and mechanical properties of clay/polystyrene‐ block ‐polybutadiene‐ block ‐polystyrene triblock copolymer (SBS) intercalated nanocomposites using organoclay containing stearic acid
Author(s) -
Yamaguchi Tomohiro,
Yamada Eisuke
Publication year - 2006
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.2004
Subject(s) - organoclay , montmorillonite , materials science , exfoliation joint , nanocomposite , polybutadiene , polystyrene , stearic acid , copolymer , composite material , chemical engineering , polymer , graphene , nanotechnology , engineering
Organoclays containing various amounts of stearic acid (SA) were synthesized, and clay/polystyrene‐ block ‐polybutadiene‐ block ‐polystyrene triblock copolymer (SBS) intercalated nanocomposites were prepared using organoclays containing SA by melt‐blending. Montmorillonite was the clay used, and both stearylamine and SA were used as surface modifiers. The amount of SA added was 0, 20, 50 and 100% of the cation‐exchange capacity (CEC). In this study, the effects of SA on the microstructure and mechanical properties of the clay/SBS nanocomposites were investigated. In clay/SBS with 100% CEC of SA, although no exfoliation of the clay occurred, the stacked clay layers were uniformly dispersed at the nanometer level (100–800 nm) without agglomeration. Clay/SBSs containing SA exhibited superior mechanical properties compared to clay/SBS without SA. It was found that SA effectively improved the clay dispersion in the SBS matrix and the mechanical properties of the clay/SBSs. Copyright © 2006 Society of Chemical Industry