Tuning cavitation and crazing in polymer nanocomposite glasses containing bimodal grafted nanoparticles at the nanoparticle/polymer interface

2019 ◽  
Vol 21 (13) ◽  
pp. 7115-7126 ◽  
Author(s):  
Rui Shi ◽  
Hu-Jun Qian ◽  
Zhong-Yuan Lu
Keyword(s):  
Mechanical Properties ◽  
Polymer Nanocomposites ◽  
Polymer Nanocomposite ◽  
Polymer Interface ◽  
Grafted Nanoparticles ◽  
Graft Chain

The mechanical properties of polymer nanocomposites containing bimodal grafted nanoparticles can be tuned at the nanoparticle/polymer interface using different graft chain types.

scholarly journals Recent Advances in the Synthesis of Polymer-Grafted Low-K and High-K Nanoparticles for Dielectric and Electronic Applications

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2942
Author(s):  
Bhausaheb V. Tawade ◽  
Ikeoluwa E. Apata ◽  
Nihar Pradhan ◽  
Alamgir Karim ◽  
Dharmaraj Raghavan
Keyword(s):  
Energy Density ◽  
Polymer Nanocomposites ◽  
High Performance ◽  
Breakdown Strength ◽  
Polymer Nanocomposite ◽  
High Energy ◽  
Polymer Chains ◽  
High Energy Density ◽  
Grafted Nanoparticles ◽  
Grafting From

The synthesis of polymer-grafted nanoparticles (PGNPs) or hairy nanoparticles (HNPs) by tethering of polymer chains to the surface of nanoparticles is an important technique to obtain nanostructured hybrid materials that have been widely used in the formulation of advanced polymer nanocomposites. Ceramic-based polymer nanocomposites integrate key attributes of polymer and ceramic nanomaterial to improve the dielectric properties such as breakdown strength, energy density and dielectric loss. This review describes the ”grafting from” and ”grafting to” approaches commonly adopted to graft polymer chains on NPs pertaining to nano-dielectrics. The article also covers various surface initiated controlled radical polymerization techniques, along with templated approaches for grafting of polymer chains onto SiO2, TiO2, BaTiO3, and Al2O3 nanomaterials. As a look towards applications, an outlook on high-performance polymer nanocomposite capacitors for the design of high energy density pulsed power thin-film capacitors is also presented.

Correlation between grafted nanoparticle–matrix polymer interface wettability and slip in polymer nanocomposites

Soft Matter ◽  
2018 ◽  
Vol 14 (29) ◽  
pp. 6076-6082 ◽  
Author(s):  
Mohd Ibrahim ◽  
Nafisa Begam ◽  
Venkat Padmanabhan ◽  
J. K. Basu
Keyword(s):  
Polymer Nanocomposites ◽  
Polymer Nanocomposite ◽  
Matrix Interface ◽  
Matrix Polymer ◽  
Polymer Interface ◽  
Interface Slip ◽  
Grafted Nanoparticle

Controlling the nanoparticle–matrix interface slip by varying the interface wettability between the two in a polymer nanocomposite which is crucial in realizing their potential in various application.

A Review on Effect of Nanoreinforcement on Mechanical Properties of Polymer Nanocomposites

2018 ◽  
Vol 280 ◽  
pp. 284-293 ◽  
Author(s):  
M.N. Ervina Efzan ◽  
N. Siti Syazwani
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Polymer Nanocomposites ◽  
Polymer Matrix ◽  
Functional Performance ◽  
Polymer Nanocomposite ◽  
Filled Polymers ◽  
Performance Properties ◽  
New Class ◽  
Potential Use

Polymer nanocomposites represent a new class of materials that offer an alternative to the conventional filled polymers. In this new class of materials, nanosized reinforcement are dispersed in polymer matrix offering tremendous improvement in performance properties of the polymer. The combination of nanoscale reinforcement and polymer matrix possess outstanding properties and functional performance which play an important role in many field of applications. This review addresses the types of nanoscale materials reinforced in polymer matrix such as nanocellulose, carbon nanotubes (CNTs), graphene, nanofibers and nanoclay followed by the discussion on the effect of these nanoscale reinforcement on mechanical properties of polymer nanocomposites. Besides, the potential use of polymer nanocomposite reinforced with those nanoscale reinforcements in various field of applications also discussed.

Modulating interfacial attraction of polymer-grafted nanoparticles in melts under shear

Soft Matter ◽  
2014 ◽  
Vol 10 (25) ◽  
pp. 4464-4470 ◽  
Author(s):  
Erkan Senses ◽  
Yang Jiao ◽  
Pinar Akcora
Keyword(s):  
Mechanical Properties ◽  
Shear Flow ◽  
Polymer Nanocomposites ◽  
Flow Fields ◽  
Spatial Ordering ◽  
Grafted Nanoparticles

The mechanical properties of polymer nanocomposites are significantly affected by spatial ordering of nanoparticles (NPs) which can be modified under shear flow fields.

Effect of Filler–Polymer Interface on Elastic Properties of Polymer Nanocomposites: A Molecular Dynamics Study

2017 ◽  
Vol 45 (3) ◽  
pp. 227-241 ◽  
Author(s):  
Chi Ma ◽  
Tuo Ji ◽  
Christopher G. Robertson ◽  
R. Rajeshbabu ◽  
Jiahua Zhu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polymer Nanocomposites ◽  
Coupling Agent ◽  
Critical Value ◽  
Coarse Grained ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Mechanical Reinforcement ◽  
Polymer Interface ◽  
Grafting Density

ABSTRACT A coarse-grained model has been built to study the effect of the interfacial interaction between spherical filler particles and polymer on the mechanical properties of polymer nanocomposites. The polymer is modeled as bead-spring chains, and nano-fillers grafted with coupling agent are embedded into the polymer matrix. The potential parameters for polymer and filler are optimized to maximally match styrene-butadiene rubber reinforced with silica particles. The results indicated that, to play a noticeable role in mechanical reinforcement, a critical value exists for the grafting density of the filler–polymer coupling agent. After reaching the critical value, the increase of grafting density can substantially enhance mechanical properties. It is also observed that the increase of grafting density does not necessarily increase the amount of independent polymer chains connected to fillers. Instead, a significant amount of increased grafting sites serve to further strengthen already connected polymer and filler, indicating that mechanical reinforcement can occur through the locally strengthened confinement at the filler–polymer interface. These understandings based on microstructure visualization shed light on the development of new filler polymer interfaces with better mechanical properties.

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.

Effect of nanofillers on the crystalline and mechanical properties of EVACO polymer nanocomposites

2021 ◽  
Author(s):  
Gibin George ◽  
H. Manikandan ◽  
T.M. Anup Kumar ◽  
Sam Joshy ◽  
A.C. Sanju ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polymer Nanocomposites
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