نتایج جستجو برای: polymeric nanocomposites

تعداد نتایج: 38374  

2009
Sanchita Biswas Kevin D. Belfield Ritesh K. Das Siddhartha Ghosh Arthur F. Hebard

Well-defined diblock copolymers of bicyclo[2.2.1]hept-5-ene-2-carboxylic acid oxiranylmethyl ester, having both anchoring and steric stabilizing blocks in a 1:1 ratio, have been prepared by ringopening metathesis polymerization (ROMP). The epoxy-containing block copolymer stabilized in situ generated iron oxide (γ-Fe2O3) nanoparticles. The epoxy ester group provided strong chelation between the...

2014
A.THABET Y. A. MOBARAK

This paper reviews recent advances in the field of developing industrial polymers by nanocomposites materials. The discussed materials have been attracted in both academic and industrial attention because they exhibit dramatic improvement in properties at selected low filler contents. Herein, the types and forms of industrial polymer, structure, and properties of polymer–nanocomposites are disc...

Journal: :Dalton transactions 2014
Daniela Maggioni Paolo Arosio Francesco Orsini Anna M Ferretti Tomas Orlando Amedea Manfredi Elisabetta Ranucci Paolo Ferruti Giuseppe D'Alfonso Alessandro Lascialfari

Three-component nanocomposites, constituted by a superparamagnetic iron oxide core coated with a polymeric surfactant bearing tightly bound Re(CO)3 moieties, were prepared and fully characterized. The water soluble and biocompatible surfactant was a linear poly(amidoamine) copolymer (PAA), containing cysteamine pendants in the minority part (ISA23SH), able to coordinate Re(CO)3 fragments. For t...

2007
Rahul K Gupta

The combination of Ethylene-vinyl acetate copolymer (EVA) with nanoclay has wide commercial applications (such as packaging films and cables), which depend on the vinyl acetate contained in the main chain. As the vinyl acetate content increases, the copolymer presents less crystallinity and different mechanical behavior. EVA with 40 wt% vinyl acetate content (EVA40)/ organoclay nanocomposites w...

A. Yousofnejad D. Ghanbari Gh. Nabiyouni, M. Seraj Z. Mirdamadian

Magnetic CuFe2O4 nanoparticles were synthesized by a facile microwave-assisted reaction between Cu(NO3)2 and Fe(NO3)3. The magnetic nanoparticles were added to starch to make magnetic polymeric nanocomposite. The nanoparticles and nanocomposites were characterized using X-ray diffraction and scanning electron microscopy. The magn...

2010
Jiang-Jen Lin Ying-Nan Chan Yi-Fen Lan

Recent studies on the intercalation and exfoliation of layered clays with polymeric intercalating agents involving poly(oxypropylene)-amines and the particular uses for epoxy nanocomposites are reviewed. For intercalation, counter-ionic exchange reactions of clays including cationic layered silicates and anionic Al-Mg layered double hydroxide (LDH) with polymeric organic ions afforded organocla...

F. Sadeghvandi L. Saadat,

Conducting polymers, because of their special properties, are used to introduce conductive polymeric composites. Also, clays have recently been used for preparation of polymer composites with enhanced mechanical and thermal properties. The aim of this work is to study the synergetic effect of the co-presence of conducting polyaniline and montmorillonite in the polyethylene matrix. Polyethylene ...

F. Sadeghvandi L. Saadat,

Conducting polymers, because of their special properties, are used to introduce conductive polymeric composites. Also, clays have recently been used for preparation of polymer composites with enhanced mechanical and thermal properties. The aim of this work is to study the synergetic effect of the co-presence of conducting polyaniline and montmorillonite in the polyethylene matrix. Polyethylene ...

Journal: :Biotechnology and bioengineering 2014
Akhilesh K Gaharwar Nicholas A Peppas Ali Khademhosseini

Hydrogels mimic native tissue microenvironment due to their porous and hydrated molecular structure. An emerging approach to reinforce polymeric hydrogels and to include multiple functionalities focuses on incorporating nanoparticles within the hydrogel network. A wide range of nanoparticles, such as carbon-based, polymeric, ceramic, and metallic nanomaterials can be integrated within the hydro...

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