نتایج جستجو برای: inorganic polymer

تعداد نتایج: 165385  

In this study, a polymer-silica nanocomposite using the sol-gel method was synthesized in three steps at room temperature. The nanocomposite material was formed with an organic compound (polyethylene glycol) and inorganic silica nanoparticles. Furthermore, the size and the distribution of nanoparticles in the polymer matrix were characterized by a transmission electron microscope (TEM).  In add...

2010
Demetra S. Achilleos Maria Vamvakaki

Organic/inorganic nanohybrid materials have attracted particular scientific and technological interest because they combine the properties of the organic and the inorganic component. Inorganic nanoparticles exhibit interesting electrical, optical, magnetic and/or catalytic properties, which are related with their nano-scale dimensions. However, their high surface-to-volume ratio often induces a...

2010
Shanghua Li Meng Meng Lin Muhammet S. Toprak Do Kyung Kim Mamoun Muhammed

This article provides an up-to-date review on nanocomposites composed of inorganic nanoparticles and the polymer matrix for optical and magnetic applications. Optical or magnetic characteristics can change upon the decrease of particle sizes to very small dimensions, which are, in general, of major interest in the area of nanocomposite materials. The use of inorganic nanoparticles into the poly...

2014
Matthew A. Hood Margherita Mari Rafael Muñoz-Espí

This article reviews the recent advances and challenges in the preparation of polymer/inorganic hybrid nanoparticles. We mainly focus on synthetic strategies, basing our classification on whether the inorganic and the polymer components have been formed in situ or ex situ, of the hybrid material. Accordingly, four types of strategies are identified and described, referring to recent examples: (...

Journal: :علوم و تکنولوژی پلیمر 0
مجید پاکیزه محمدرضا امیدخواه رامین کریم زاده عبدالصمد زرین قلم

0

2013
V. C. Souza M. G. N. Quadri G. N. Quadri

In relation to some inorganic membranes, polymeric membranes have relatively low separation performance. However, the processing flexibility and low cost of polymers still make them highly attractive for many industrial separation applications. Polymer–inorganic hybrid membranes constitute an emerging research field and have been recently developed to improve the separation properties of polyme...

Journal: :Sen'i Gakkaishi 1977

2014
Tânia Ribeiro Carlos Baleizão José Paulo S. Farinha

High performance functional coatings, based on hybrid organic/inorganic materials, are being developed to combine the polymer flexibility and ease of processing with the mechanical properties and versatility of inorganic materials. By incorporating silica nanoparticles (SiNPs) in the polymeric matrices, it is possible to obtain hybrid polymer films with increased tensile strength and impact res...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2007
Saar Kirmayer Eyal Aharon Ekaterina Dovgolevsky Michael Kalina Gitti L Frey

Lamellar nanocomposites based on semiconducting polymers incorporated into layered inorganic matrices are prepared by the co-assembly of organic and inorganic precursors. Semiconducting polymer-incorporated silica is prepared by introducing the semiconducting polymers into a tetrahydrofuran (THF)/water homogeneous sol solution containing silica precursor species and a surface-active agent. Semi...

2017
Stavros Bollas Kiriaki Chrissopoulou Konstantinos S. Andrikopoulos George A. Voyiatzis Spiros H. Anastasiadis Joannis K. Kallitsis Georgios Bokias

The conformation of polymer chains under confinement is investigated in intercalated polymer/layered silicate nanocomposites. Hydrophilic poly(ethylene oxide)/sodium montmorillonite, PEO/Na+-MMT, hybrids were prepared utilizing melt intercalation with compositions where the polymer chains are mostly within the ~1 nm galleries of the inorganic material. The polymer chains are completely amorphou...

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