Applications of Polymer-Based Nanocomposites (original) (raw)

A review of the recent developments in the field of polymer composites

2020

© 2018 IJRAR December 2018, Volume 5, Issue 4 www.ijrar.org (E-ISSN 2348-1269, PISSN 2349-5138) IJRAR1BIP175 International Journal of Research and Analytical Reviews (IJRAR) www.ijrar.org 1071 particulate fillers, to enhance various attributes. The modification in the properties is mainly dependent on the size of nano filler, nature of filler, weight percentage of filler, and facade treatment of the fillers. In the last two decades, there has been a strong importance given to the polymer based nanocomposites, i.e. at least one of the proportions of the filler particles should have size in nanometres. The ultimate manufactured product should not be of nano-scale, but it can be in macroscopic or microscopic shape[7]. The nanometric scaled molecule such as platelet clays, multi walled nano tubes of carbon, and fibers in nano size with extremely elevated aspects ratio with its nano-scaled distribution within the chemical compound matrix has proven to become the basis of structures becau...

Influence of polymeric matrix on the physical and chemical properties of experimental composites

Brazilian Oral Research, 2015

Influence of polymeric matrix on the physical and chemical properties of experimental composites Abstract: Nowadays, the main reasons for replacement of resin-based composite restorations are fracture or problems with the integrity of their interface, such as marginal staining, microleakage, or secondary caries. The aim of the present study was to evaluate the influence of the organic matrix on polymerization stress (PS), degree of conversion (DC), elastic modulus (E), flexural strength (FS), Knoop hardness (KHN), sorption (SP), and solubility (SL). In order to obtain a material which combines better mechanical properties with lower PS, seven experimental composites were prepared using BisGMA to TEGDMA molar ratios of 2:8, 3:7, 4:6, 5:5, 6:4, 7:3 and 8:2 and 40% of silica. PS was obtained in a universal testing machine, using acrylic as bonding substrate. DC was determined using Fourier Transform Raman spectroscopy. E and FS were obtained by the three-point bending test. KHN was measured by a microindentation test using a load of 25 g for 30 s. SP and SL were assessed according to ISO 4049. The data were submitted to one-way ANOVA. The increase in BisGMA concentration resulted in the decrease of PS, DC, E, FS and KHN. However, it did not change the SP and SL values. FS, E and KHN showed a strong and direct relationship with the DC of the materials. The composite material with a BisGMA to TEGDMA molar ratio of 1:1 was the one with better mechanical properties and lower PS.

Composites Based on Nanocomposite Matrices

Wiley Encyclopedia of Composites, 2011

Please note that the abstract and keywords will not be included in the printed book, but are required for the online presentation of this book which will be published on Wiley's own online publishing platform.

Nanocomposites for structural applications

Indian Journal of …, 2006

Nanocomposites comprise multiphase materials such as metals, polymers inorganic ceramics where at least one constituent phase has one dimension less than 100 nm. Different types of nanosize reinforcements, e.g. fiber, nanoclays, nanospheres, nanopowder etc amorphous or crystalline have been described along with fabrication processes and characteristics properties of different types of nanocomposites for structural applications.