scholarly journals Fracture behavior of boehmite-filled polypropylene block copolymer nanocomposites as assessed by the essential work of fracture concept

2014 ◽  
Vol 131 (13) ◽  
pp. n/a-n/a ◽  
Author(s):  
Tamás Turcsán ◽  
László Mészáros ◽  
Vincent Mandla Khumalo ◽  
Ralf Thomann ◽  
József Karger-Kocsis
Keyword(s):  
Block Copolymer ◽  
Fracture Behavior ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Work Of Fracture

scholarly journals Evaluation of fracture behavior of polyethylene/CaCO3 nanocomposite using essential work of fracture (EWF) approach

2014 ◽  
Vol 1 (1) ◽  
pp. 27-35 ◽  
Author(s):  
Meymanat S. Mohsenzadeh ◽  
Mohammad Mazinani ◽  
Seyed Mojtaba Zebarjad
Keyword(s):  
Fracture Behavior ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Work Of Fracture

Effect of β-phase on the fracture behavior of dynamically vulcanized PP/EPDM blends studied by the essential work of fracture approach

2009 ◽  
Vol 45 (5) ◽  
pp. 1448-1453 ◽  
Author(s):  
Xue-Gang Tang ◽  
Rui-Ying Bao ◽  
Wei Yang ◽  
Bang-hu Xie ◽  
Ming-bo Yang ◽  
...  
Keyword(s):  
Fracture Behavior ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Β Phase ◽  
Work Of Fracture

Effect of annealing on fracture behavior of poly(propylene-block-ethylene) using essential work of fracture analysis

2006 ◽  
Vol 103 (5) ◽  
pp. 3438-3446 ◽  
Author(s):  
Qing-guo Li ◽  
Bang-Hu Xie ◽  
Wei Yang ◽  
Zhong-Ming Li ◽  
Wei-qin Zhang ◽  
...  
Keyword(s):  
Fracture Behavior ◽  
Fracture Analysis ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Poly Propylene ◽  
Work Of Fracture

scholarly journals Fracture Toughness of Vapor Grown Carbon Nanofiber-Reinforced Polyethylene Composites

2009 ◽  
Vol 2009 ◽  
pp. 1-6 ◽  
Author(s):  
A. R. Adhikari ◽  
E. Partida ◽  
T. W. Petty ◽  
R. Jones ◽  
K. Lozano ◽  
...  
Keyword(s):  
Fracture Behavior ◽  
Carbon Nanofiber ◽  
Processing Conditions ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Material Evaluation ◽  
Impact Fracture Behavior ◽  
The Impact ◽  
Work Of Fracture ◽  
Vapor Grown Carbon Nanofiber

The impact fracture behavior of a vapor grown carbon nanofiber (VGCNF) reinforced high-density polyethylene (PE) composite was evaluated. The samples consisting of pure PE and composites with 10 wt% and 20 wt% of VGCNFs were prepared by a combination of hot-pressing and extrusion methods. Extrusion was used to produce samples with substantially different shear histories. The fracture behavior of these samples was analyzed using the essential work of fracture (EWF) approach. The results showed an increase of 292% in the essential work of fracture for the loading of 10 wt%. Further increasing fiber loading to 20 wt% caused the essential work of fracture to increase only 193% with respect to the unmodified material. Evaluation of the fracture surface morphology indicated that the fibril frequency and microvoid size within the various fiber loadings depended strongly on processing conditions.

scholarly journals Clay-Based Polymer Nanocomposites: Essential Work of Fracture

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2399
Author(s):  
Edgar Adrian Franco-Urquiza
Keyword(s):  
Polymer Nanocomposites ◽  
Fracture Behavior ◽  
General Structure ◽  
Polymer Nanocomposite ◽  
Outer Zone ◽  
Essential Work ◽  
Essential Work Of Fracture ◽  
Molecular Arrangement ◽  
Two Parameters ◽  
Work Of Fracture

This work details the general structure of the clays used as a reinforcement phase in polymer nanocomposites. Clays are formed by the molecular arrangement of atomic planes described through diagrams to improve their visualization. The molecular knowledge of clays can facilitate the selection of the polymer matrix and achieve a suitable process to obtain clay-based polymer nanocomposite systems. This work highlights the development of polymer nanocomposites using the melt intercalation method. The essential work of fracture (EWF) technique has been used to characterize the fracture behavior of materials that show ductility and where complete yielding of the ligament region occurs before the crack propagation. In this sense, the EWF technique characterizes the post-yielding fracture mechanics, determining two parameters: the specific essential work of fracture (we), related to the surface where the actual fracture process occurs, and the specific non-essential work of fracture (wp), related to the plastic work carried out in the outer zone of the fracture zone. The EWF technique has been used successfully in nano-reinforced polymers to study the influence of different variables on fracture behavior. In this work, the fundamentals of the EWF technique are described, and some examples of its application are compiled, presenting a summary of the most relevant contributions in recent years.

Study on the fluidity, mechanical and fracture behavior of ABS/TPU/CNT nanocomposites

2020 ◽  
pp. 089270572097869
Author(s):  
Farshad Heidari ◽  
Milad Aghalari ◽  
Ata Chalabi Tehran ◽  
Karim Shelesh-Nezhad
Keyword(s):  
Carbon Nanotubes ◽  
Fracture Behavior ◽  
Acrylonitrile Butadiene Styrene ◽  
Flow Index ◽  
Essential Work ◽  
Melt Mixing ◽  
Essential Work Of Fracture ◽  
Mechanical Performances ◽  
Work Of Fracture ◽  
Butadiene Styrene

Acrylonitrile butadiene styrene has relatively good mechanical performances, but its low melt fluidity limits the production of thin parts. In this research, acrylonitrile butadiene styrene/thermoplastic polyurethane (ABS/TPU) blends and ABS/TPU/CNT nanocomposites were prepared by employing melt-mixing process. The melt fluidity, mechanical and fracture behavior of different samples were evaluated. The morphology of fracture surfaces was studied by scanning electron microscopy. The addition of TPU into ABS substantially elevated the melt flow index, but noticeably weakened the notched impact toughness. The presence of carbon nanotubes in ABS/TPU blend promoted the mechanical performances and developed a rough fracture surface morphology. The notched impact resistance and essential work of fracture in nanocomposite containing 0.1 wt.% CNT showed about 95 and 50% increases respectively as compared to ABS/TPU (90/10) blend. In the presence of 0.3 wt.% CNT, the plane stress condition favorably dominated the toughness behavior, enhancing the non-essential work of fracture and crack propagation energy. The appropriate dispersion of carbon nanotubes and their adhesion to ABS/TPU polymer matrix were considered as the prominent factors affecting the fracture resistance of ABS/TPU/CNT nanocomposites.

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