نتایج جستجو برای: polyhedral oligomeric silsesquioxane poss

تعداد نتایج: 13529  

Journal: :Optics express 2010
Shie-Chang Jeng Shug-June Hwang Yu-Hsiang Hung Sheng-Chieh Chen

A broadband cholesteric liquid crystal (CLC) device with a multi-domain structure is demonstrated by using an aggregation of polyhedral oligomeric silsesquioxane (POSS) nanoparticles in the CLC layer. The aggregation pattern of the self-assembled POSS nanoparticles depends on the concentration of POSS doped in the mixture of POSS/CLC and the cooling rate of the mixture from a temperature higher...

Journal: :Turkish Journal of Chemistry 2023

The effect of octaisobutyl-polyhedral oligomeric silsesquioxane (OIB-POSS) as a nanosized reinforcement on the cure kinetics, crosslinking density, and mechanical properties styrene-butadiene rubber (SBR) nanocomposites was examined in this study. For purpose, SBR compounds with various OIB-POSS nanoparticle loadings at 1, 3, 5 phr were prepared their results compared reference compound without...

2015
Lei Liu Xiaoxuan Xu

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...

2004
Xi Zhang Elaine R. Chan Lin C. Ho Sharon C. Glotzer

Polyhedral oligomeric silsesquioxane (POSS) based materials are a class of organic/inorganic hybrid nanomaterials with many interesting properties. Recent experiments have demonstrated that self-assembly of tethered POSS nanocubes is a promising route to the synthesis of novel materials with highly ordered, complex nanostructures. Using a coarsegrained model developed for tethered POSS, we perf...

Journal: :Biomacromolecules 2011
Xinzhu Gu Jian Wu Patrick T Mather

In this Article, we studied the enzymatic hydrolytic biodegradation behavior of a novel multiblock thermoplastic polyurethane (TPU) system, which incorporates polyhedral oligomeric silsesquioxane (POSS) into linear biodegradable thermoplastic polyurethanes containing poly(ε-caproactone) (PCL) and polyethylene glycol (PEG) blocks. The biodegradation behavior of POSS-PCL-PEG TPUs was characterize...

Journal: :Solid State Ionics 2021

Hybrid organic-inorganic block copolymer electrolytes are of interest to enable batteries containing lithium metal anodes. The conductive is a standard polymer electrolyte poly(ethylene oxide) and the mechanically rigid an inorganic poly(acryloisobutyl polyhedral oligomeric silsesquioxane) polymer. In this paper, we compare silsesquioxane)-b-poly(ethylene oxide)-b-poly(acryloisobutyl (POSS-PEO-...

Journal: :Polymer 2022

A non-isocyanate poly (hydroxyurethane) network was synthesized by reaction of a tricyclic carbonate compound with diamines. The system modified two types Polyhedral Oligomeric Silsesquioxane (POSS) molecules, one retaining the crosslinked nature system, and another effectively loosening it. We studied water absorption as function environmental humidity observed that all systems are extremely h...

Journal: :Coatings 2022

To improve the overall performance of polyurethane acrylic (PUAs) coatings applied to an iron or wood substrate, a modifier, trivinylisooctyl polyhedral oligomeric silsesquioxane (TVi7iso–POSS), was successfully synthesized by polycondensation reaction in presence organotin catalyst. TVi7iso–POSS is POSS derivative possessing three olefin and seven isooctyl bonds; its molecular structure confir...

2017
Sławomir Szafert

Among the varied and diverse family of drug delivery systems (DDSs), such as polymer–drug conjugates, polymeric micelles, dendrimers and molecular containers, polyhedral oligomeric silsesquioxanes (POSS) occupy a special position within the group of biocompatible drug carriers. The extraordinary recommendation of POSS for such systems derives from their three-dimensional structure, nanoscale si...

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