A new strategy to exfoliated silicone rubber/clay nanocomposites
Date
2005
Authors
Ma, J.
Yu, Z.Z.
Kuan, H.C.
Mai, Y.
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Macromolecular Rapid Communications, 2005; 26(10):830-833
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<jats:title>Abstract</jats:title><jats:p><jats:bold>Summary:</jats:bold> A new strategy was developed to prepare disorderly exfoliated nanocomposites, in which a soft siloxane surfactant with a weight‐average molecular weight (<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="graphic/tex2gif-ueqn-1.gif" xlink:title="equation image" />) of 1 900 was adopted to modify the clay. The modified clay slurry was then mixed with silicone rubber by hand, and exfoliation was achieved. The proposed mechanism thereof was verified by TEM and XRD. The physical entanglement of the soft siloxane surfactant plays a vital role in the diffusion and intercalation of the matrix molecules during the compounding of the slurry‐polymer mixture. This simple method is applicable to other silicone‐based materials reinforced by clay.</jats:p><jats:p><jats:boxed-text content-type="graphic" position="anchor"><jats:caption><jats:p>TEM micrograph of silicone rubber/clay‐sil nanocomposite.</jats:p></jats:caption><jats:graphic xmlns:xlink="http://www.w3.org/1999/xlink" mimetype="image/jpeg" position="anchor" specific-use="enlarged-web-image" xlink:href="graphic/mgra001.jpg"><jats:alt-text>magnified image</jats:alt-text><jats:caption><jats:p>TEM micrograph of silicone rubber/clay‐sil nanocomposite.</jats:p></jats:caption></jats:graphic></jats:boxed-text>
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