Rational design of polyhedral oligomeric silsesquioxane fillers for simultaneous improvements of thermomechanical properties and lowering refractive indices of polymer films

2013 ◽  
Vol 51 (17) ◽  
pp. 3583-3589 ◽  
Author(s):  
Jong-Hwan Jeon ◽  
Kazuo Tanaka ◽  
Yoshiki Chujo
Keyword(s):  
Polymer Films ◽  
Rational Design ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Thermomechanical Properties ◽  
Refractive Indices ◽  
Oligomeric Silsesquioxane

scholarly journals Fluoroalkyl POSS with Dual Functional Groups as a Molecular Filler for Lowering Refractive Indices and Improving Thermomechanical Properties of PMMA

Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1332 ◽  
Author(s):  
Kazunari Ueda ◽  
Kazuo Tanaka ◽  
Yoshiki Chujo
Keyword(s):  
Refractive Index ◽  
Methyl Methacrylate ◽  
Functional Groups ◽  
Polyhedral Oligomeric Silsesquioxane ◽  
Thermomechanical Properties ◽  
Optical Measurements ◽  
Refractive Indices ◽  
Casting Method ◽  
Dual Functional ◽  
Oligomeric Silsesquioxane

The dual-functionalized polyhedral oligomeric silsesquioxane (POSS) derivatives, which have the seven fluorinated alkanes and the single acrylate ester on the silica cube, were designed as a filler for lowering the refractive index (RI) and improving thermomechanical properties in poly(methyl methacrylate) (PMMA). The desired dual-functionalized POSS fillers were prepared, and because of its high miscibility, homogeneous films were readily obtained, by the casting method, with the mixture solutions containing the modified POSS and the polymers. From optical measurements, it was found that the larger effects of lowering the RIs of the PMMA matrices were observed from the modified POSS than those of the octa-substituted POSS derivatives with the homogeneous substituents. It should be mentioned that the degradation temperatures and the storage moduli were able to be greatly elevated by loading the present POSS fillers. Finally, it was demonstrated that the methacrylate ester-tethered POSS should be the most effective filler for modulating PMMA (Δn = −0.020, ΔTd20 = +53 °C, ΔE'/E' = +72%).

Morphology and Thermomechanical Properties of Melt-Mixed Polyoxymethylene/Polyhedral Oligomeric Silsesquioxane Nanocomposites

2010 ◽  
Vol 295 (9) ◽  
pp. 846-858 ◽  
Author(s):  
Miguel Sánchez-Soto ◽  
Silvia Illescas ◽  
Henry Milliman ◽  
David A. Schiraldi ◽  
Asier Arostegui
Keyword(s):  
Polyhedral Oligomeric Silsesquioxane ◽  
Thermomechanical Properties ◽  
Oligomeric Silsesquioxane
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