Developments in Nanoscience: Polyhedral Oligomeric Silsesquioxane (POSS) - Polymers

Abstract

Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. This review is intended to cover the more recent advances in both structure-property relationships of polymers incorporating Polyhedral Oligomeric Silsesquioxane(s) (POSS) nanostructured chemicals as well as space-survivability testing of POSS-polymers. The strategy employed for using POSS as building blocks is discussed in addition to current models and predictions pertaining to the ideal crystallite/aggregate size of the nanocomposite within the polymer matrix to provide maximum mechanical improvements. The oxidation and rapid formation of SiO2 during atomic oxygen testing leads to a passivating layer, and conclusive proof of these phenomena is presented. Also, a brief history of POSS is outlined to help readers understand how they relate to the recent boom in nanotechnology and their position in nanomaterials R&D.

Hydrophobic modification of polymethyl methacrylate as intraocular lenses material to improve the cytocompatibility

“…Polyhedral oligomeric silsesquioxane (POSS) is a novel cage-like structure of the organic-inorganic hybrid molecules [21][22][23]. The main structure of POSS consists of two parts: a cage-like inorganic core based on SiAOASi bonds and the shell composed of eight surrounded organic groups, which may be designed according to needs.…”

Atomic oxygen degradation mechanisms of epoxy composites for space applications

“…Polymer modification using chemical means, generally involving the incorporation of silicon atoms through oligosiloxanes chain segments [18] or polyhedral oligomeric silsesquioxanes (i.e. POSS reagents), has been studied by a number of researchers to promote the AO resistance of space materials [12,19] and work going in our laboratories is also focused on both approaches.…”

Fabrication of boronate‐decorated polyhedral oligomeric silsesquioxanes grafted cotton fiber for the selective enrichment of nucleosides in urine

“…As a kind of well‐defined organic/inorganic hybrid nanostructured molecule, polyhedral oligomeric silsesquioxanes (POSS) represented as R 8 Si 8 O 12 has received considerable attract and interest due to its special structure and excellent physicochemical properties . The most common POSS molecule has a cubic rigid (T8) structure with a central inorganic core (Si 8 O 12 ) surrounded with eight groups connected by Si–O–Si bonds, which can be functionalized with organic moieties at each of the eight vertices .…”