Modeling Viscoelastic Properties of Triblock Copolymers: A DPD Simulation Study

2009 ◽  
Author(s):  
Yelena R. Sliozberg ◽  
Jan W. Andzelm ◽  
John K. Brennan ◽  
Mark R. Vanlandingham ◽  
Victor Pryamitsyn ◽  
...  
Keyword(s):  
Simulation Study ◽  
Viscoelastic Properties ◽  
Triblock Copolymers ◽  
Dpd Simulation

Modeling viscoelastic properties of triblock copolymers: A DPD simulation study

2009 ◽  
Vol 48 (1) ◽  
pp. 15-25 ◽  
Author(s):  
Yelena R. Sliozberg ◽  
Jan W. Andzelm ◽  
John K. Brennan ◽  
Mark R. Vanlandingham ◽  
Victor Pryamitsyn ◽  
...  
Keyword(s):  
Simulation Study ◽  
Viscoelastic Properties ◽  
Triblock Copolymers ◽  
Dpd Simulation

scholarly journals Effects of Loading and Boundary Conditions on the Performance of Ultrasound Compressional Viscoelastography: A Computational Simulation Study to Guide Experimental Design

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2590
Author(s):  
Che-Yu Lin ◽  
Ke-Vin Chang
Keyword(s):  
Boundary Conditions ◽  
Simulation Study ◽  
Viscoelastic Properties ◽  
Measurement Accuracy ◽  
Computational Simulation ◽  
Vertical Direction ◽  
Fixation Method ◽  
Element Analysis ◽  
Sample Container

Most biomaterials and tissues are viscoelastic; thus, evaluating viscoelastic properties is important for numerous biomedical applications. Compressional viscoelastography is an ultrasound imaging technique used for measuring the viscoelastic properties of biomaterials and tissues. It analyzes the creep behavior of a material under an external mechanical compression. The aim of this study is to use finite element analysis to investigate how loading conditions (the distribution of the applied compressional pressure on the surface of the sample) and boundary conditions (the fixation method used to stabilize the sample) can affect the measurement accuracy of compressional viscoelastography. The results show that loading and boundary conditions in computational simulations of compressional viscoelastography can severely affect the measurement accuracy of the viscoelastic properties of materials. The measurement can only be accurate if the compressional pressure is exerted on the entire top surface of the sample, as well as if the bottom of the sample is fixed only along the vertical direction. These findings imply that, in an experimental validation study, the phantom design should take into account that the surface area of the pressure plate must be equal to or larger than that of the top surface of the sample, and the sample should be placed directly on the testing platform without any fixation (such as a sample container). The findings indicate that when applying compressional viscoelastography to real tissues in vivo, consideration should be given to the representative loading and boundary conditions. The findings of the present simulation study will provide a reference for experimental phantom designs regarding loading and boundary conditions, as well as guidance towards validating the experimental results of compressional viscoelastography.

scholarly journals Dissipative particle dynamics simulation study of poly(2-oxazoline)-based multicompartment micelle nanoreactor

2016 ◽  
Vol 18 (8) ◽  
pp. 6284-6290 ◽  
Author(s):  
Byeong Jae Chun ◽  
Christina Clare Fisher ◽  
Seung Soon Jang
Keyword(s):  
Internal Structure ◽  
Simulation Study ◽  
Dissipative Particle Dynamics ◽  
Simulation Method ◽  
Particle Dynamics ◽  
Dynamics Simulation ◽  
Multicompartment Micelles ◽  
Dissipative Particle Dynamics Simulation ◽  
Dpd Simulation

We investigate multicompartment micelles for nanoreactor applications, using the DPD simulation method to characterize the internal structure and the distribution of the reactant.

scholarly journals Electrocoalescence of water in oil emulsions: a DPD simulation study and a novel application of electroporation theory

RSC Advances ◽  
2019 ◽  
Vol 9 (59) ◽  
pp. 34172-34183
Author(s):  
Roar Skartlien ◽  
Sebastien Simon ◽  
Johan Sjöblom
Keyword(s):  
Simulation Study ◽  
Molecular Simulations ◽  
Oil Emulsions ◽  
Dpd Simulation

Electrocoalescence of water in oil emulsions can be described by electroporation theory and predictions compared well to DPD molecular simulations.

Phase Behavior and Viscoelastic Properties of Thermoplastic Elastomer Gels Based on ABC Triblock Copolymers

2005 ◽  
Vol 38 (18) ◽  
pp. 7798-7806 ◽  
Author(s):  
Daisuke Yamaguchi ◽  
Michel Cloitre ◽  
Pierre Panine ◽  
Ludwik Leibler
Keyword(s):  
Phase Behavior ◽  
Viscoelastic Properties ◽  
Triblock Copolymers ◽  
Thermoplastic Elastomer ◽  
Abc Triblock Copolymers
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