Toughening of polycarbonate: Effect of particle size and rubber phase contents of the core-shell impact modifier

2004 ◽  
Vol 95 (3) ◽  
pp. 748-755 ◽  
Author(s):  
Kilwon Cho ◽  
Jaeho Yang ◽  
Soong Yoon ◽  
Minku Hwang ◽  
Sobha V. Nair
Keyword(s):  
Particle Size ◽  
Core Shell ◽  
The Core ◽  
Effect Of Particle Size ◽  
Rubber Phase ◽  
Impact Modifier

Effect of the core-shell impact modifier shell thickness on toughening PVC

2004 ◽  
Vol 44 (10) ◽  
pp. 1885-1889 ◽  
Author(s):  
Juh-Shyong Lee ◽  
Feng-Chih Chang
Keyword(s):  
Shell Thickness ◽  
Core Shell ◽  
The Core ◽  
Impact Modifier

Preparation of Carbon-Encapsulated Fe Core-Shell Nanostructures by Confined Arc Plasma

2011 ◽  
Vol 688 ◽  
pp. 245-249 ◽  
Author(s):  
Zhi Qiang Wei ◽  
Xiao Yun Wang ◽  
Hua Yang
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Particle Size ◽  
Specific Surface ◽  
Surface Area ◽  
Core Shell ◽  
Arc Plasma ◽  
X Ray ◽  
The Core ◽  
Transmission Electron

Special carbon encapsulated Fe core-shell nanoparticles with a size range of 15–40 nm were successfully prepared via confined arc plasma method. The composition, morphology, microstructure, specific surface area, particle size of the product by this process were characterized via X-ray diffraction (XRD), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), X-ray energy dispersive spectrometry (XEDS) and BET N2adsorption. The experiment results shown that the carbon encapsulated Fe nanoparticles with clear core-shell structure, the core of the particles is body centered cubic (BCC) structure Fe, and the shell of the particles is disorder carbons. The particle size of the nanocapsules ranges from 15 to 40nm，with an averaged value about 30nm, the particles diameter of the core is about 16nm and the thickness of the shells is about 6-8 nm, and the specific surface area is 24 m2/g.

Effect of particle size on the magnetic properties of core-shell structured nanoparticles

2006 ◽  
Vol 100 (3) ◽  
pp. 034301 ◽  
Author(s):  
Abdullah Ceylan ◽  
C. C. Baker ◽  
S. K. Hasanain ◽  
S. Ismat Shah
Keyword(s):  
Particle Size ◽  
Magnetic Properties ◽  
Core Shell ◽  
Effect Of Particle Size

Effect of Particle Size on the Oxidation Behavior of Nanophase Tin Synthesized by Inert Gas Condensation

2007 ◽  
Vol 119 ◽  
pp. 9-12
Author(s):  
J.S. Kim ◽  
Moo Young Huh ◽  
Jae Pyong Ahn
Keyword(s):  
Particle Size ◽  
Tin Oxide ◽  
Inert Gas ◽  
Oxide Shell ◽  
Gas Condensation ◽  
Size Dependent ◽  
The Core ◽  
Inert Gas Condensation ◽  
Effect Of Particle Size ◽  
Higher Temperature

Nanophase tin powder having sizes ranging from 6 to 40 nm was synthesized by the inert gas condensation method using helium as the convection gas. As-synthesized particles smaller than 8 nm were the amorphous tin oxide. As-synthesized particles larger than 10 nm can be characterized by the core-shell structure comprising inner crystalline tin core and outer amorphous tin oxide shell having a thickness of about 4 nm. Upon annealing in air, the oxidation of nanophase tin particles strongly depended on particle size. With increasing particle size, the transformation into the crystalline phases took places at a higher temperature. Calculation of the size dependent melting temperature of tin particles indicates that melting of the tin encapsulated with the amorphous tin oxide took place prior to the oxidation.

Effect of particle size on the mechanical properties of polystyrene and poly(butyl acrylate) core/shell polymers

Polymer ◽  
2007 ◽  
Vol 48 (5) ◽  
pp. 1212-1218 ◽  
Author(s):  
L.A. Pérez-Carrillo ◽  
M. Puca ◽  
M. Rabelero ◽  
K.E. Meza ◽  
J.E. Puig ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Butyl Acrylate ◽  
Core Shell ◽  
Effect Of Particle Size

scholarly journals TO/TMMP-TMTGE Double-Healing Composite Containing a Transesterification Reversible Matrix and Tung Oil-Loaded Microcapsules for Active Self-Healing

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1127 ◽  
Author(s):  
Nan Zheng ◽  
Jie Liu ◽  
Wenge Li
Keyword(s):  
Particle Size ◽  
Click Reaction ◽  
Average Particle Size ◽  
Core Shell ◽  
Average Particle ◽  
Self Healing ◽  
Tung Oil ◽  
The Core ◽  
Core Content ◽  
Healing System

Thermoset epoxies are widely used due to their excellent properties, but conventional epoxies require a complicated and time-consuming curing process, and they cannot self-healed, which limits their applications in self-healing materials. Extrinsic and intrinsic self-healing materials are applied in various fields due to their respective characteristics, but there is a lack of comparison between the two types of healing systems. Based on this, a thiol-epoxide click reaction catalyzed by an organic base was introduced to achieve the efficient preparation of thiol-epoxy. Furthermore, tung oil (TO)-loaded microcapsules were introduced into the thiol-epoxy matrix of dynamic transesterification to obtain a TO/TMMP-TMTGE self-healing composite with an intrinsic–extrinsic double-healing system. For comparison, a TMMP-TMTGE self-healing material with an intrinsic healing system was also prepared, which contained only thiol and epoxy curing chemistries. The effect of the core/shell ratio on the morphology, average particle size, and core content of TO-loaded microcapsules was studied. It was found that when the core/shell ratio was 3:1, the average particle size of the microcapsules was about 99.8 μm, and the microcapsules showed good monodispersity, as well as a core content of about 58.91%. The differential scanning calorimetry (DSC) results showed that the TO core was successfully encapsulated and remained effective after encapsulation. Furthermore, scanning electron microscopy (SEM), atomic force microscopy (AFM), tensile tests, and electrochemical tests were carried out for the two types of self-healing materials. The results showed that the TO/TMMP-TMTGE composite and TMMP-TMTGE material both had self-healing properties. In addition, the TO/TMMP-TMTGE composite was superior to the TMMP-TMTGE material due to its better self-healing performance, mechanical strength, and corrosion protection performance.

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