Dynamics of branched chain solutions in adsorbing slit. A Monte Carlo study

被引：0
作者：
Andrzej Sikorski
Iwona Żukowska
机构：
[1] University of Warsaw,Department of Chemistry
来源：
Rheologica Acta | 2008年 / 47卷
关键词：
Branched polymers; Confined polymers; Monte Carlo method; Polymer solutions; Polymer dynamics;
D O I：
暂无
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学科分类号：
摘要：
A coarse-grained model of branched polymers confined in a slit formed by two parallel impenetrable surfaces that were attractive for polymer segments was developed and studied. The model chains were regular stars consisting of f = 3 branches of equal length. The positions of chains were restricted to vertices of a simple cubic lattice. The chains were at good solvent conditions—the excluded volume was the only interaction between the segments of the chain. The properties of the model chains were determined by means of Monte Carlo simulations with a sampling algorithm based on chain’s local changes of conformation. The dependence of chain mobility on the width of the slit and the polymer concentration was studied. The conditions at which the strongly adsorbed chains could swap between both confining surfaces were studied. The mechanism of the chain motion was also discussed.
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页码：571 / 577
页数：6
相关论文
共 59 条
[1]  
Aoyagi T(2001)Molecular dynamics study of polymer melt confined between walls J Chem Phys 115 552-559
[2]  
Takimoto J(2004)Polymer-induced depletion interaction between weakly attractive plate Langmuir 20 764-770
[3]  
Doi M(2005)A directed walk model of a long chain polymer in a slit with attractive walls J Phys A Math Gen 38 4309-4325
[4]  
Bleha T(2004)Influence of polymer architecture and polymer-wall interaction on the adsorption of polymers into a slit-pore Phys Rev E 69 021802.50-3036
[5]  
Cifra P(2004)Polymer intrusion into narrow pores at the interface between a poor solvent and adsorbing and non-adsorbing surfaces Polymer 45 3027-4149
[6]  
Brak R(2005)Surface forces in a confined polymer melt: self-consisted filed analysis of full ad restricted equilibrium cases Phys Rev E 72 021807-4517
[7]  
Owczarek AL(2007)Equilibrium dynamics of an associating polymer melts in narrow slit by computer simulation J Phys Chem B 111 4141-182
[8]  
Rechnitzer A(1999)Novel configurational-bias Monte Carlo method for branched molecules. Transferable potentials for phase equilibria. 2. United-atom description of branched alkanes J Phys Chem B 103 4508-2004
[9]  
Whittington SG(1996)Polymer solutions confined in slit-like pore with attractive walls: An off-lattice Monte Carlo study of static properties and chain dynamics J Comput-aided Mater 2 167-397
[10]  
Chen Z(1997)Semidilute and concentrated polymer solutions near attractive walls: dynamic Monte Carlo simulation of density and pressure profiles of a coarse-grained model Macromolecules 30 1194-2914
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