High Pressure Nano-Destruction of a Brittle Polymeric Materials Surface

2013 ◽  
Vol 199 ◽  
pp. 667-671
Author(s):  
Anatoli Svirydzionak ◽  
Sergey Chizhik ◽  
Mikhail Ihnatouski
Keyword(s):  
High Pressure ◽  
High Velocity ◽  
Water Drop ◽  
Polymeric Materials ◽  
Cyclic Loads ◽  
Atomic Force ◽  
Jet Impact ◽  
Brittle Polymers ◽  
Plastic Character ◽  
Velocity Water

The regularity of the erosion wear of a surface of a brittle polymeric material under the conditions of high-pressure (high-velocity) water-jet impact was examined using the atomic-force microscope. Investigations results proved that the elementary mechanism of erosive failure of brittle polymers in response to pressure and cyclic loads at micro and nanolevel may have brittle character, as well as elastoplastic and plastic character under severer regimes. The process of hardening of the fine (nanolevel) superficial layers of PMMA material has been determined in conditions of high-velocity water-drop loading.

Damage and fracture characteristics of rocks with different structures under high-velocity water jet impact

2021 ◽  
pp. 107961
Author(s):  
Songqiang Xiao ◽  
Qingyang Ren ◽  
Yugang Cheng ◽  
Hanyun Zhao ◽  
Shirong Cao ◽  
...  
Keyword(s):  
High Velocity ◽  
Water Jet ◽  
Fracture Characteristics ◽  
Damage And Fracture ◽  
Jet Impact ◽  
Velocity Water

The New Test Method for High Velocity Water Jet Impact

2012 ◽  
Vol 52 (9) ◽  
pp. 1475-1481 ◽  
Author(s):  
S. L. Lopatnikov ◽  
J. W. Gillespie ◽  
C. Morand ◽  
R. Lumpkin ◽  
J. Dignam
Keyword(s):  
High Velocity ◽  
Water Jet ◽  
Test Method ◽  
Jet Impact ◽  
Velocity Water

On the failure pattern of sandstone impacted by high-velocity water jet

2015 ◽  
Vol 76 ◽  
pp. 67-74 ◽  
Author(s):  
Yiyu Lu ◽  
Fei Huang ◽  
Xiaochuan Liu ◽  
Xiang Ao
Keyword(s):  
High Velocity ◽  
Water Jet ◽  
Failure Pattern ◽  
Velocity Water

scholarly journals Removal of Interproximal Dental Biofilms by High-velocity Water Microdrops

2013 ◽  
Vol 93 (1) ◽  
pp. 68-73 ◽  
Author(s):  
A. Rmaile ◽  
D. Carugo ◽  
L. Capretto ◽  
M. Aspiras ◽  
M. De Jager ◽  
...  
Keyword(s):  
High Velocity ◽  
Velocity Water

scholarly journals Investigation of Fatigue Behavior of ABS and PC-ABS Polymers at Different Temperatures

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1818
Author(s):  
Andrea Mura ◽  
Alessando Ricci ◽  
Giancarlo Canavese
Keyword(s):  
High Temperature ◽  
Room Temperature ◽  
Working Condition ◽  
Fatigue Behavior ◽  
Polymeric Materials ◽  
Cyclic Loads ◽  
Structural Components ◽  
Working Temperature ◽  
Different Temperatures ◽  
Positive Effect

Plastics are widely used in structural components where cyclic loads may cause fatigue failure. In particular, in some applications such as in vehicles, the working temperature may change and therefore the strength of the polymeric materials. In this work, the fatigue behavior of two thermoplastic materials (ABS and PC-ABS) at different temperatures has been investigated. In particular, three temperatures have been considered representing the working condition at room temperature, at low temperature (winter conditions), and high temperature (summer conditions and/or components close to the engine). Results show that high temperature have big impact on fatigue performance, while low temperatures may also have a slight positive effect.

Preparation of Cellulose Nanofibrils by High-Pressure Homogenizer and Zein Composite Films

2013 ◽  
Vol 829 ◽  
pp. 534-538 ◽  
Author(s):  
Alireza Shakeri ◽  
Sattar Radmanesh
Keyword(s):  
Atomic Force Microscopy ◽  
High Pressure ◽  
Food Packaging ◽  
Cellulose Nanofibrils ◽  
Composite Films ◽  
Average Diameter ◽  
Nanocomposite Films ◽  
Force Microscopy ◽  
Atomic Force ◽  
High Pressure Homogenizer

Cellulose nanofibrils ( NF ) have several advantages such as biodegradability and safety toward human health. Zein is a biodegradable polymer with potential use in food packaging applications. It appears that polymer nanocomposites are one of the most promising applications of zein films. Cellulose NF were prepared from starting material Microcrystalline cellulose (MCC) by an application of a high-pressure homogenizer at 20,000 psi and treatment consisting of 15 passes. Methods such as atomic force microscopy were used for confirmation of nanoscale size production of cellulose. The average diameter 45 nm were observed. Zeincellulose NF nanocomposite films were prepared by casting ethanol suspensions of Zein with different amounts of cellulose NF in the 0% to 5%wt. The nanocomposites were characterized by using Fourier transform infrared spectroscopy ( FTIR ), Atomic force microscopy ( AFM ) and X-ray diffraction ( XRD ) analysis. From the FTIR spectra the various groups present in the Zein blend were monitored. The homogeneity, morphology and crystallinity of the blends were ascertained from the AFM and XRD data, respectively. The thermal resistant of the zein nanocomposite films improved as the nanocellulose content increased. These obtained materials are transparent, flexible and present significantly better physical properties than the corresponding unfilled Zein films.

Micro∕nanoscopic patterning of polymeric materials by atomic force microscope assisted electrohydrodynamic nanolithography

2008 ◽  
Vol 103 (2) ◽  
pp. 024307 ◽  
Author(s):  
Xian Ning Xie ◽  
Hong Jing Chung ◽  
Dipankar Bandyopadhyay ◽  
Ashutosh Sharma ◽  
Chorng Haur Sow ◽  
...  
Keyword(s):  
Atomic Force Microscope ◽  
Polymeric Materials ◽  
Atomic Force

scholarly journals Recent Applications of Advanced Atomic Force Microscopy in Polymer Science: A Review

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1142 ◽  
Author(s):  
Phuong Nguyen-Tri ◽  
Payman Ghassemi ◽  
Pascal Carriere ◽  
Sonil Nanda ◽  
Aymen Amine Assadi ◽  
...  
Keyword(s):  
Atomic Force Microscopy ◽  
Chemical Characterization ◽  
Super Resolution ◽  
Polymeric Materials ◽  
Polymer Materials ◽  
Polymer Science ◽  
Force Microscopy ◽  
Atomic Force ◽  
Nanoscale Characterization

Atomic force microscopy (AFM) has been extensively used for the nanoscale characterization of polymeric materials. The coupling of AFM with infrared spectroscope (AFM-IR) provides another advantage to the chemical analyses and thus helps to shed light upon the study of polymers. This paper reviews some recent progress in the application of AFM and AFM-IR in polymer science. We describe the principle of AFM-IR and the recent improvements to enhance its resolution. We also discuss the latest progress in the use of AFM-IR as a super-resolution correlated scanned-probe infrared spectroscopy for the chemical characterization of polymer materials dealing with polymer composites, polymer blends, multilayers, and biopolymers. To highlight the advantages of AFM-IR, we report several results in studying the crystallization of both miscible and immiscible blends as well as polymer aging. Finally, we demonstrate how this novel technique can be used to determine phase separation, spherulitic structure, and crystallization mechanisms at nanoscales, which has never been achieved before. The review also discusses future trends in the use of AFM-IR in polymer materials, especially in polymer thin film investigation.

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