The Hansen Solubility Parameters (HSP) of three octafunctional POSS compounds (octaphenethyl, octastyrenyl, and 1-naphthyheptaphenyl) were successfully determined using the traditional Hansen approach with a set of 45 test solvents.  The data suggest that HSP are likely to be as valid for simple inert POSS compounds as for any organic oligomer.  In the case of phenethylPOSS, there is at least some extant experimental data on polymer compatibility that suggests the HSP approach may offer more insight than simple 'like dissolves like' heuristics.

Hansen solubility parameters of polyhedral oligomeric silsesquioxane (POSS) compounds

243rd National Meeting (2012)

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