PIM-1 mixed matrix membranes (MMMs) were fabricated with polyhedral oligomeric silsesquioxane (POSS) and graphene oxide (GO) functionalized POSS (GO-POSS), tested for CO2/N2 (single gas) CO2/CH4 (1:1, v:v gas mixture). The CO2 permeability of the best performing fresh MMM (containing 0.05 wt% GO-POSS) was ? 12000 Barrer, which is 69% higher than that neat membrane, about same selectivity (CO2/C...

Nowadays, novel applications for polyaniline (PANI) make new demands on its morphology controlling, and designing novel PANI or PANI composite polymeric materials has been more and more attractive. In this work, octaaminophenyl polyhedral oligomeric silsesquioxane (POSS) was employed to prepare nanostructured PANI composites via controlled fabrication. By interfacial copolymerization, fibrous n...

Organic-inorganic hybrid materials combine the advantages of both phases: hardness and strength inorganic phase elasticity toughness organic matrix. In present study, we have prepared nanocomposites with a poly(thiourethane) polymeric matrix silsesquioxane-type structures, thiols as reactive groups (POSS-A or POSS-B, synthesized in different pressure conditions), looking for covalent interactio...

treatment of tuberculosis (tb) and the discovery of effective new anti tubercular drugs is one of the most urgent priorities in health organizations all around the world. in the present study, fluorinated analogs of some of the most important anti-tb agents such as p-aminosalicylic acid (pas), thiacetazone and pyrazinamide were synthesized and tested against tb. the fluorinated analog of thiace...

Various antireflection thin films are often used to cover glass to increase solar cell electrical parameters. In the recent years many efforts have been done to develop and improve of solar cell films with high electrical output. One of the most important challenges of obtaining of high-efficiency thin films of solar cells is creation an effective light trapping system. The new polymeric protec...

Selecting the optimal subset from a large set of variables is a fundamental problem in various learning tasks such as feature selection, sparse regression, dictionary learning, etc. In this paper, we propose the POSS approach which employs evolutionary Pareto optimization to find a small-sized subset with good performance. We prove that for sparse regression, POSS is able to achieve the best-so...

Abstract: The organic/inorganic hybrid materials from polyhedral oligomeric silsesquioxane (POSS, inorganic nanoparticles) and polybenzoxazine (PBZ) have received much interesting recently due to their excellent thermal and mechanical properties, flame retardance, low dielectric constant, well-defined inorganic framework at nanosized scale level, and higher performance relative to those of non-...

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 revi...

Moisture-curable polyurethane (MCPU) is a specifically designed material for the consolidation of fragile cultural objects in high-humidity environments. In order to solve problem its susceptibility yellowing due heat ageing, polyhedral oligomeric silsesquioxane (POSS) was added MCPU prepare POSS/MCPU. The appearance, stability and mechanical properties POSS/MCPU films were characterized using ...

The puzzle addressed here is the appearance of the POSS sign, pictured at right above, in both attributive (1a) and predicative (2b) possessive constructions.2 Patterns in the morphosyntax and semantics of POSS possessives reveal that the underlying function of POSS across these constructions is that of a verbal predicate. The analysis of POSS as a verbal predicate is transparently supported by...