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Preparation and structure and mechanical properties of poly(styrene‐ b ‐butadiene)/clay nanocomposites
Author(s) -
Liao Mingyi,
Zhu Jiedong,
Xu Hongde,
Li Yang,
Shan Wei
Publication year - 2004
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.20372
Subject(s) - nanocomposite , materials science , montmorillonite , thermal stability , dynamic mechanical analysis , composite material , copolymer , thermoplastic elastomer , organoclay , intercalation (chemistry) , styrene butadiene , dynamic modulus , elongation , polymer , styrene , chemical engineering , ultimate tensile strength , chemistry , engineering , inorganic chemistry
Star‐shaped and linear block thermoplastic poly(styrene‐ b ‐butadiene) copolymer (SBS)/organophilic montmorillonite clays (OMMT) were prepared by a solution approach. The intercalation spacing in the nanocomposites and the degree of dispersion of nanocomposites were investigated by X‐ray diffraction (XRD) and transmission electron microscopy (TEM), respectively. The mechanical properties, dynamic mechanical properties, and thermal stability of these nanocomposites were determined. Results showed that SBS chains were well intercalated into the clay galleries and an intercalated nanocomposite was obtained. The mechanical strength of nanocomposites with the star‐shaped SBS/OMMT were significantly increased. The addition of OMMT also gave an increase of the elongation, the dynamic storage modulus, the dynamic loss modulus, and the thermal stability of nanocomposites. The increase of the elongation of nanocomposites indicates that SBS has retained good elasticity. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 3430–3434, 2004