Abstract
Hybrid materials with superior structural and functional properties can be obtained by incorporating nanofillers into polymer matrices. Polyhedral oligomeric silsesquioxane (POSS) nanoparticles have attracted much attention recently due to their nanometer size, the ease of which these particles can be incorporated into polymeric materials and the unique capability to reinforce polymers. We review here the state of POSS-containing polymer nanocomposites. We discuss the influence of the incorporation of POSS into polymer matrices via chemical cross-linking or physical blending on the structure of nanocomposites, as affected by surface functional groups, and the POSS concentration.
Highlights
Polymers are widely used in industry due to their light weight and ductility
We have considered the incorporation of Polyhedral oligomeric silsesquioxane (POSS) nanoparticles into polymeric matrices via chemical cross-linking or physical blending
While POSS was attached to the end of the PEO block in this study [60], Zhang et al [61] succeeded in incorporating POSS particles at the junction of two blocks of amphiphilic poly(styrene)-b-poly(ethylene oxide) block copolymer
Summary
Polymers are widely used in industry due to their light weight and ductility. they have a lower modulus and strength when compared to metals and ceramics [1], which may make polymers less attractive as engineering materials. Researchers have found that dispersing POSS nanoparticles into a polymer increases the strength, modulus, rigidity and reduces the flammability, heat discharge and viscosity of the polymer [1,3,17,18], while retaining its lightweight and ductile features These enhanced properties allow for a wider range of applications of these nanocomposites, e.g., drug delivery, polymer electrolytes, thermoplastic and thermosetting polymers [19,20,21,22]. In Part 3, we discuss the influence of the incorporation of POSS in polymeric matrices (via physical blending) on the overall structure, how POSS-polymer surface interactions (as affected by the surface functional group of POSS and loading) influence the nanocomposite structure. Specific examples are given to emphasize the role of POSS and their state of dispersion-influenced functional properties of POSS-containing polymeric composites
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