Pulling an adsorbed polymer chain off a solid surface

Bhattacharya, Swati; Milchev, A.; Rostiashvili, V. G.; Vilgis, Thomas A.

doi:10.1140/epje/i2009-10492-8

Cited by 21 publications

(34 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Here, f c shows the critical force leading to unbinding of the adsorbed strands. Relatively similar results are derived by Bhattacharya et al [63]…”

Section: Discussionsupporting

confidence: 91%

Network Polydispersity and Deformation‐Induced Damage in Filled Elastomers

Tehrani

Moshaei

Sarvestani

2017

Macro Theory & Simulations

View full text Add to dashboard Cite

An a priori assumption in micromechanical analysis of polymeric networks is that the constitutive polymer strands are of equal length. Monodisperse distribution of strands, however, is merely a simplifying assumption. This paper relaxes this assumption and considers a vulcanized network with a broad distribution of strand length. In the light of this model, this study predicts the damage initiation and stress–stretch dependency in filled polymer networks with random internal structures. The degradation of network mechanical behavior is assumed to be controlled by the adhesive failure of the strands adsorbed to the filler surface. This study shows that the short adsorbed strands are the culprits for damage initiation and their finite extensibility is a key determinant of the mechanical strength.

show abstract

“…Here, f c shows the critical force leading to unbinding of the adsorbed strands. Relatively similar results are derived by Bhattacharya et al [63]…”

Section: Discussionsupporting

confidence: 91%

Network Polydispersity and Deformation‐Induced Damage in Filled Elastomers

Tehrani

Moshaei

Sarvestani

2017

Macro Theory & Simulations

View full text Add to dashboard Cite

show abstract

“…Force ϕ stays constant in the course of the desorption process as long as at least one adsorption blob is still located on the attractive surface. The strength of ϕ can be determined from the plateau in the deformation curve: force vs. chain end position [23].…”

Section: Dependence Of the Restoring Force ϕ On The Adsorption Energymentioning

confidence: 99%

Polymer Detachment Kinetics from Adsorbing Surface: Theory, Simulation and Similarity to Infiltration into Porous Medium

et al. 2012

View full text Add to dashboard Cite

The force-assisted desorption kinetics of a macromolecule from adhesive surface is studied theoretically, using the notion of tensile (Pincus) blobs, as well as by means of Monte-Carlo (MC) and Molecular Dynamics (MD) simulations. We show that the change of detached monomers with time is governed by a differential equation which is equivalent to the nonlinear porous medium equation (PME), employed widely in transport modeling of hydrogeological systems. Depending on the pulling force and the strength of adsorption, three kinetic regimes can be distinguished: (i) "trumpet" (weak adsorption and small pulling force), (ii) "stemtrumpet" (weak adsorption and moderate force), and (iii) "stem" (strong adsorption and large force). Interestingly, in all regimes the number of desorbed beads M (t), and the height of the first monomer (which experiences a pulling force) R(t) above the surface follow an universal square-root-of-time law. Consequently, the total time of detachment τ d , scales with polymer length N as τ d ∝ N 2 . Our main theoretical conclusions are tested and found in agreement with data from extensive MC-and MD-simulations.

show abstract

“…These properties can be contrasted to the findings from a recent Monte Carlo simulation on a very similar system by Bhattacharya and coworkers, where a phase diagram similar to Fig. 1(c) was drawn and the transition was considered "pseudo" continuous [8].…”

Section: Introductionmentioning

confidence: 73%

“…3(f)-3(i) were obtained. The smoothness of these curves has made Bhattacharya and coworkers to claim that the transition is "pseudo" continuous [8], rather than discontinuous. As demonstrated in the next section, the first-order nature can be readily extracted from the current Monte Carlo simulation that uses an inverse density of state as a simulation weight.…”

Section: A Thermal Averagementioning

confidence: 99%

See 1 more Smart Citation

Coil-bridge transition and Monte Carlo simulation of a stretched polymer

Chen

2011

Phys. Rev. E

View full text Add to dashboard Cite

The structure of the system consisting of a grafted self-avoiding polymer chain attracted to the surface layer of a flat wall at a distance away by a short-ranged force is investigated. A first-order transition is determined between the coil state at a low attraction energy and the bridge state at a high attraction energy. The transition properties of the system are obtained by a Monte Carlo simulation, which uses the inverse density of states as the transition weight and is reweighted back to a canonical ensemble. The determination of the density of states follows a revised Wang-Landau procedure in which the center-of-mass distance from the grafted site is used as the variable. Scaling arguments are also given for the observed numerical results.

show abstract

Pulling an adsorbed polymer chain off a solid surface

Cited by 21 publications

References 26 publications

Network Polydispersity and Deformation‐Induced Damage in Filled Elastomers

Network Polydispersity and Deformation‐Induced Damage in Filled Elastomers

Polymer Detachment Kinetics from Adsorbing Surface: Theory, Simulation and Similarity to Infiltration into Porous Medium

Coil-bridge transition and Monte Carlo simulation of a stretched polymer

Contact Info

Product

Resources

About