High performance holographic gratings formed with novel photopolymer films containing hyper-branched silsesquioxane

Synthesis, characterization, and properties of a novel polyhedral oligomeric octamethyldiphenylsulfonylsilsesquioxane

“…The 29 Si NMR spectra of the compounds confirmed their complete conversion from the parent OPS. As is reported, the chemical shift for OPS is found at -78.3 ppm [33]. The 29 Si NMR spectrum of OMDPSS (Fig.…”

“…The single peak at d = 8.34 ppm corresponded to the H ortho to both Si 8 O 12 and SO 2 PhCH 3 . OPS shows three peaks at 7.75, 7.47-7.42, and 7.36 ppm, which correspond to the monosubstituted aromatic ring [33]. The change of 1 H NMR spectrum is direct evidence for the meta-substituted sulfonylation of OPS.…”

Synthesis and characterization of novel room temperature vulcanized (RTV) silicone rubbers using octa[(trimethoxysilyl)ethyl]-POSS as cross-linker

“…And the non-uniform distribution of POSS-rich areas in the matrix of PDMS probably results in irregular changes in tensile properties and soluble fraction of RTV silicone rubbers. However, the tensile reinforcement of the novel RTV silicone rubbers likely results from plasticization [13,32,33] of self-cross-linked OPS cross-linker in addition to the formation of special three-dimensional networks, as compared with conventional RTV silicone rubbers (TM, TE and MT samples). The large amount of OPS crosslinker relative to terminal hydroxyl groups of HPDMS is likely adverse to the uniform distribution of POSS cross-linker during the cross-linking process, as evidenced by the increasing degree of swelling with increase in weight fraction of OPS.…”

POSS/Polyurethane Hybrids and Nanocomposites: A Review on Preparation, Structure and Performance

“…13 From the standpoint of molecular design, the organic and inorganic phases are combined with covalent bond to form POSS, is a new type of organic-inorganic hybrid material. [14][15][16][17][18][19][20][21][22][23][24] It is reported that POSS exists in the following structures: random, ladder, cage, and partial cage. 25,26 POSS can be incorporated into polyurethanes by physical blending and chemical modifications.…”