scholarly journals Polymer Nanocomposite Membranes

2018 ◽  
Vol 8 (7) ◽  
pp. 1181 ◽  
Author(s):  
Svetlana Kononova ◽  
Galina Gubanova ◽  
Eleonora Korytkova ◽  
Denis Sapegin ◽  
Katerina Setnickova ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Polymer Matrix ◽  
Scientific Literature ◽  
Morphological Characteristics ◽  
Polymer Nanocomposite ◽  
Nanocomposite Materials ◽  
Sorption Mechanism ◽  
Nanocomposite Membranes ◽  
Nanocomposite Structure ◽  
Transport Channels

Based on the results of research works reflected in the scientific literature, the main examples, methods and approaches to the development of polymer inorganic nanocomposite materials for target membranes are considered. The focus is on membranes for critical technologies with improved mechanical, thermal properties that have the necessary capabilities to solve the problems of a selective pervaporation. For the purpose of directional changes in the parameters of membranes, effects on their properties of the type, amount and conditions of nanoparticle incorporation into the polymer matrix were analyzed. An influence of nanoparticles on the structural and morphological characteristics of the nanocomposite film is considered, as well as possibilities of forming transport channels for separated liquids are analyzed. Particular attention is paid to a correlation of nanocomposite structure-transport properties of membranes, whose separation characteristics are usually considered within the framework of the diffusion-sorption mechanism.

Electrical and Thermal Properties of Carbon Nanotube Polymer Composite Films

2007 ◽  
Vol 1018 ◽  
Author(s):  
Enkeleda Dervishi ◽  
Zhongrui Li ◽  
Viney Saini ◽  
Alexandru R. Biris ◽  
Dan Lupu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Thermal Properties ◽  
Photoelectron Spectroscopy ◽  
Carbon Nanostructures ◽  
Chemical Vapor ◽  
Polymer Nanocomposite ◽  
Nanocomposite Materials ◽  
Catalytic Systems ◽  
Metal Metal

AbstractThe electrical and thermal properties of carbon nanotubes (CNT)-polymer nanocomposite materials have been studied. The carbon nanostructures were analyzed by several analytical techniques, including Electronic Microscopy, Raman Spectroscopy, and X-Ray Photoelectron Spectroscopy. Carbon nanotubes were grown by catalytic chemical vapor deposition on metal/metal oxide catalytic systems using acetylene or other hydrocarbons. Raman Spectroscopy was used to analyze the CNT and CNT-polymer nanocomposite materials. The thermal and electrical properties of these CNT-polymer nanocomposite materials depend on the amount of CNTs in the polymer and also on the uniformity of the CNTs dispersed in the polymer. A reduction in electrical resistivity was observed, as the nanotubes' concentration in the polymeric films increased, while optical transparency remained 85 % or higher relative to acrylic films without nanotubes.

scholarly journals Ultrasound directed self-assembly processing of nanocomposite materials with ultra-high carbon nanotube weight fraction

2018 ◽  
Vol 53 (10) ◽  
pp. 1329-1336 ◽  
Author(s):  
J Greenhall ◽  
L Homel ◽  
B Raeymaekers
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Matrix ◽  
Self Assembly ◽  
High Weight ◽  
Polymer Nanocomposite ◽  
Weight Fraction ◽  
Weight Percent ◽  
Nanocomposite Materials ◽  
Single Line ◽  
Aligned Carbon Nanotubes

We introduce a new process to manufacture polymer nanocomposite materials reinforced with an ultra-high weight fraction of aligned carbon nanotubes. This process is based on using ultrasound directed self-assembly, which employs the force associated with a standing ultrasound wave to concentrate and align carbon nanotubes dispersed in the polymer matrix. In contrast with existing manufacturing processes, which typically limit the carbon nanotube weight fraction to approximately 1 wt.%, we demonstrate manufacturing polymer nanocomposite materials with more than 10 wt.% of aligned carbon nanotubes along a single line. We accomplish this by first dispersing 1 wt.% percent of carbon nanotubes in the polymer matrix, and using ultrasound directed self-assembly to concentrate and align the carbon nanotubes along a single line. Then, we trim the excess material around the single line of aligned carbon nanotubes to retain a nanocomposite material with an ultra-high weight percent of aligned carbon nanotubes. We also manufacture polymer nanocomposite materials with different weight percent of aligned carbon nanotubes along multiple parallel lines, and with randomly oriented carbon nanotubes. We experimentally measure the mechanical properties of the polymer nanocomposite materials, and find that the ultrasound directed self-assembly process results in specimens with aligned carbon nanotubes that display a significant increase in ultimate tensile strength, Young’s modulus, and moduli of resilience and toughness, compared to benchmark materials including polymer nanocomposite materials with randomly oriented carbon nanotubes, and virgin polymer matrix material.

scholarly journals A Review on Polymer Nanocomposites and Their Effective Applications in Membranes and Adsorbents for Water Treatment and Gas Separation

Membranes ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 139
Author(s):  
Oluranti Agboola ◽  
Ojo Sunday Isaac Fayomi ◽  
Ayoola Ayodeji ◽  
Augustine Omoniyi Ayeni ◽  
Edith E. Alagbe ◽  
...  
Keyword(s):  
Greenhouse Gases ◽  
Polymer Nanocomposites ◽  
Gas Separation ◽  
Rapid Growth ◽  
Dye Removal ◽  
Anthropogenic Activities ◽  
Polymer Nanocomposite ◽  
Population Increase ◽  
Nanocomposite Membranes

Globally, environmental challenges have been recognised as a matter of concern. Among these challenges are the reduced availability and quality of drinking water, and greenhouse gases that give rise to change in climate by entrapping heat, which result in respirational illness from smog and air pollution. Globally, the rate of demand for the use of freshwater has outgrown the rate of population increase; as the rapid growth in town and cities place a huge pressure on neighbouring water resources. Besides, the rapid growth in anthropogenic activities, such as the generation of energy and its conveyance, release carbon dioxide and other greenhouse gases, warming the planet. Polymer nanocomposite has played a significant role in finding solutions to current environmental problems. It has found interest due to its high potential for the reduction of gas emission, and elimination of pollutants, heavy metals, dyes, and oil in wastewater. The revolution of integrating developed novel nanomaterials such as nanoparticles, carbon nanotubes, nanofibers and activated carbon, in polymers, have instigated revitalizing and favourable inventive nanotechnologies for the treatment of wastewater and gas separation. This review discusses the effective employment of polymer nanocomposites for environmental utilizations. Polymer nanocomposite membranes for wastewater treatment and gas separation were reviewed together with their mechanisms. The use of polymer nanocomposites as an adsorbent for toxic metals ions removal and an adsorbent for dye removal were also discussed, together with the mechanism of the adsorption process. Patents in the utilization of innovative polymeric nanocomposite membranes for environmental utilizations were discussed.

Aligned CNT/Polymer nanocomposite membranes for hydrogen separation

2009 ◽  
Vol 34 (9) ◽  
pp. 3977-3982 ◽  
Author(s):  
Anshu Sharma ◽  
Sumit Kumar ◽  
Balram Tripathi ◽  
M. Singh ◽  
Y.K. Vijay
Keyword(s):  
Polymer Nanocomposite ◽  
Hydrogen Separation ◽  
Nanocomposite Membranes

Pyrolysis kinetic behavior and TG-FTIR-GC–MS analysis of end-life ultrafiltration polymer nanocomposite membranes

2021 ◽  
pp. 131181
Author(s):  
Samy Yousef ◽  
Justas Eimontas ◽  
Nerijus Striūgas ◽  
Alaa Mohamed ◽  
Mohammed AliAbdelnaby
Keyword(s):  
Polymer Nanocomposite ◽  
Kinetic Behavior ◽  
Nanocomposite Membranes ◽  
Ms Analysis ◽  
Pyrolysis Kinetic

Polymer nanocomposite materials based on polystyrene and a layered aluminate filler

2008 ◽  
Vol 48 (10) ◽  
pp. 2027-2032 ◽  
Author(s):  
Zvonimir Matusinović ◽  
Marko Rogošić ◽  
Juraj Šipušić ◽  
Jelena Macan
Keyword(s):  
Polymer Nanocomposite ◽  
Nanocomposite Materials

Development of Some Promising Approaches for The Toughening of High-Temperature Polymers

1998 ◽  
Vol 519 ◽  
Author(s):  
C. Kumudinie ◽  
J. K. Premachandra ◽  
J. E. Mark ◽  
T. D. Dang ◽  
M. R. Unroe ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Optical Properties ◽  
Thermal Properties ◽  
High Temperature ◽  
Polymer Matrix ◽  
Hybrid Material ◽  
Arylene Ether ◽  
Rubbery Phase ◽  
Maximum Extensibility

AbstractHigh-temperature poly(arylene ether) and hydroxypolybenzoxazole polymers were toughened using dispersed rubbery phases. This rubbery phase was a hybrid material which was in-situ generated within the polymer matrix using mixtures of partially-hydrolyzable trialkoxy and dialkoxy organosilanes with a fully hydrolyzable tetraalkoxysilane. The resulting materials were characterized with regard to their structures, mechanical properties (modulus, ultimate strength, maximum extensibility, and toughness), thermal properties, optical properties, and tendencies to absorb water. Some of the results are presented here.

Sign in / Sign up

Export Citation Format

Share Document