Tensile strength clay-acrylate nanocomposite

Nanocomposites based on polymer-clay systems are of considerable interest for the development of new stmctural and functional materials. Recently, there has been much research into polymer/day nanocomposites such as epoxy, acrylic,polystyrene, and polyamide-6, owing to their unique and improved properties. For instance, compared to polyamide-6, polyamide-6/clay nanocomposites at 5wt.% day loading levd had the heat distortion temperature 87 °C higher. Also the tensile strength and tensile modulus were 49% and 68% higher, while the impact strength was almost unchanged. ... 

The polymer-clay nanocomposites with core-poly(butyl acrylate) (PBA) intercalated organophilic montmorillonite (OMMT) and shell-PS were successfully prepared using y-irradiation emulsion polymerization by Wang et al., as shown in Figure 8.3. The prepared core-PBA-OMMT and shell-PS structure nanocomposites can be incorporated in a pure PS matrix the impact strength of the blend was dramatically improved and the tensile strength of PS also remained high. 

Liao et al. [261] reported biodegradable nanocomposites prepared from poly(lactic acid) (PLA) or acrylic acid grafted poly(lactic acid) (PLA-g-AA), titanium tetraisopropylate, and starch. Arroyo et al. [262] reported that thermoplastic starch (TPS) and polylactic acid (PLA) were compounded with natural montmorillonite (MMT). The TPS can intercalate the clay structure and that the clay was preferentially located in the TPS phase or at the blend interface. This led to an improvement in tensile modulus and strength, but a reduction in fracture toughness. 

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