Preparation and characterization of poly(ethyl acrylate)/bentonite nanocomposites by <i>in situ</i> emulsion polymerization
書誌事項
- 公開日
- 2002-04-09
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1002/pola.10251
- 公開者
- Wiley
この論文をさがす
説明
<jats:title>Abstract</jats:title><jats:p>Transparent poly(ethyl acrylate) (PEA)/bentonite nanocomposites containing intercalated–exfoliated combinatory structures of clay were synthesized by <jats:italic>in situ</jats:italic> emulsion polymerizations in aqueous dispersions containing bentonite. The samples for characterization were prepared through direct‐forming films of the resulting emulsions without coagulation and separation. An examination with X‐ray diffraction and transmission electron microscopy showed that intercalated and exfoliated structures of clay coexisted in the PEA/bentonite nanocomposites. The measurements of mechanical properties showed that PEA properties were greatly improved, with the tensile strength and modulus increasing from 0.65 and 0.24 to 11.16 and 88.41 MPa, respectively. Dynamic mechanical analysis revealed a very marked improvement of the storage modulus above the glass‐transition temperature. In addition, because of the uniform dispersion of silicate layers in the PEA matrix, the barrier properties of the materials were dramatically improved. The permeability coefficient of water vapor decreased from 30.8 × 10<jats:sup>−6</jats:sup> to 8.3 × 10<jats:sup>−6</jats:sup> g cm/cm<jats:sup>2</jats:sup> s cmHg. © 2002 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 40: 1706–1711, 2002</jats:p>
収録刊行物
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- Journal of Polymer Science Part A: Polymer Chemistry
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Journal of Polymer Science Part A: Polymer Chemistry 40 (11), 1706-1711, 2002-04-09
Wiley