Reinforced Cyanate Ester Resins with Carbon Nanotubes: Surface Modification, Reaction Activity and Mechanical Properties Analyses

2009 ◽  
Vol 48 (4) ◽  
pp. 359-366 ◽  
Author(s):  
Yu-Sheng Tang ◽  
Jie Kong ◽  
Jun-Wei Gu ◽  
Guo-Zheng Liang
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Surface Modification ◽  
Cyanate Ester ◽  
Cyanate Ester Resins

scholarly journals Electrophoretic Deposition of Carbon Nanotubes over TiO2Nanotubes: Evaluation of Surface Properties and Biocompatibility

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Jung Eun Park ◽  
Il Song Park ◽  
Tae Sung Bae ◽  
Min Ho Lee
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Corrosion Resistance ◽  
Surface Modification ◽  
Electrophoretic Deposition ◽  
Biomedical Applications ◽  
Controlled Drug Delivery ◽  
Chemical Durability ◽  
Surface Modified ◽  
Excellent Chemical

Titanium (Ti) is often used as an orthopedic and dental implant material due to its better mechanical properties, corrosion resistance, and excellent biocompatibility. Formation of TiO2nanotubes (TiO2NTs) on titanium is an interesting surface modification to achieve controlled drug delivery and to promote cell growth. Carbon nanotubes (CNTs) possess excellent chemical durability and mechanical strength. The use of CNTs in biomedical applications such as scaffolds has received considerable attention in recent years. The present study aims to modify the surface of titanium by anodizing to form TiO2NTs and subsequently deposit CNTs over it by electrophoretic deposition (EPD). Characteristic, biocompatibility, and apatite forming ability of the surface modified samples were evaluated. The results of the study reveal that CNTs coating on TiO2nanotubes help improve the biological activity and this type of surface modification is highly suitable for biomedical applications.

Monomer self assembly and organo-gelation as a route to fabricate cyanate ester resins and their nanocomposites with carbon nanotubes

2015 ◽  
Vol 68 ◽  
pp. 161-174 ◽  
Author(s):  
Samikannu Rakesh ◽  
Chettichipalayam P. Sakthidharan ◽  
Muthusamy Sarojadevi ◽  
Pudupadi R. Sundararajan
Keyword(s):  
Carbon Nanotubes ◽  
Self Assembly ◽  
Cyanate Ester ◽  
Cyanate Ester Resins

Molecular dynamics simulations on the effects of carbon nanotubes on mechanical properties of bisphenol E cyanate ester validating experimental results

2016 ◽  
Vol 36 (3) ◽  
pp. 186-195 ◽  
Author(s):  
P Subba Rao ◽  
K Renji ◽  
MR Bhat
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Molecular Dynamics ◽  
Experimental Studies ◽  
Md Simulations ◽  
Geometric Optimization ◽  
Cyanate Ester ◽  
Computational Method ◽  
Interfacial Region ◽  
Atomistic Models

This paper presents molecular dynamics (MD) simulations on the effects of carbon nanotubes (CNTs) without and with chemical functionalization, on the mechanical properties of bisphenol E cyanate ester (BECy) – a potential structural resin. Atomistic models of CNTs, functionalized CNTs (fCNTs), BECy resin, CNT-BECy and fCNT-BECy resins with definite quantity of CNT/fCNT are built. Using these atomistic models, mechanical properties of the above nanosystems are estimated through a computational method involving geometric optimization and equilibration through MD by judiciously establishing various parameters. Adoptability of the approach taken up in this work to model and solve complex nanosystems capturing interactions in the interfacial region between CNT/fCNT and the resin to understand the mechanical behaviour has been highlighted. These investigations have yielded interesting and encouraging results to arrive at optimum quantity of CNTs/fCNTs to be added to achieve enhanced mechanical properties of BECy resin that validate the previous experimental studies carried out by the authors infusing similar quantities of CNTs and fCNTs into BECy.

Mechanical Properties and Creep Behavior of Carbon Fiber Nano-Composites

2011 ◽  
Vol 233-235 ◽  
pp. 2794-2799
Author(s):  
Yi Luen Li ◽  
Wei Jen Chen ◽  
Ming Yuan Shen ◽  
Chin Lung Chiang ◽  
Ming Chuen Yip
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Surface Modification ◽  
Carbon Fiber ◽  
Epoxy Resin ◽  
Creep Behavior ◽  
Primary Creep ◽  
Sem Image ◽  
Creep Stress ◽  
Electrical Conductivities

Recently, it has been observed that surface modification of carbon nanotubes（CNTs）influences on CNT’s distribution among epoxy resin and affects the mechanical properties and electrical conductivities of CNTs. Owing to above-mentioned effects, carbon nanotubes treated with oxidizing in organic acids, a kind of surface modification, generates functional groups on the surface of CNTs taht is a major investigation in this study to enhance mechanical properties and electrical conductivities of CNTs. The influence of the different proportion contents of CNTs added into epoxy resin on mechanical properties and electrical conductivities of composites was investigated, and strength of material tested under different temperature environments was observed. Moreover, the creep behavior of carbon fiber（CF）/epoxy resin thermosetting composites tested under different temperature and stress were also concerned to be analyzed. The resulting creep behavior consists of only two stages, including primary creep and steady-state creep. The effects of creep stress, creep time, different humidity treatment on the various temperature creep of composites containing different proportion contents of CNTs were investigated. It is believed that the increased creep strains can be attributed to higher applied stresses, longer creep times, higher humidity, higher temperature and lower hardnesses. The test results also exhibit that mechanical strength and electrical conductivity increase with the increase of CNTs content added into composites. In the influence of temperature effect on specimen, because of different coefficient of expansion among matrix, fiber and CNTs, the overexpansion of matrix caused by high temperature results in crack occurred among matrix. From observation of the fracture surface by SEM image, the debonding occurs and longitudinal fibers are pulled out due to poor interfacial bonding of fiber and matrix, which also results in entire strength degeneration.

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