Influence of Solvent Quality on the Force Response of Individual Poly(styrene) Polymer Chains

2017 ◽  
Vol 6 (10) ◽  
pp. 1052-1055 ◽  
Author(s):  
Milad Radiom ◽  
Plinio Maroni ◽  
Michal Borkovec
2003 ◽  
Vol 36 (2) ◽  
pp. 389-398 ◽  
Author(s):  
Phillip A. Schorr ◽  
Thomas C. B. Kwan ◽  
S. Michael Kilbey ◽  
Eric S. G. Shaqfeh ◽  
Matthew Tirrell

1988 ◽  
Vol 144 (5-6) ◽  
pp. 555-557 ◽  
Author(s):  
B. Smit ◽  
A. Van Der Put ◽  
C.J. Peters ◽  
J. De Swaan Arons ◽  
J.P.J. Michels

2016 ◽  
Vol 135 ◽  
pp. 169-179 ◽  
Author(s):  
A.J. Gravelle ◽  
M. Davidovich-Pinhas ◽  
A.K. Zetzl ◽  
S. Barbut ◽  
A.G. Marangoni

Langmuir ◽  
1989 ◽  
Vol 5 (1) ◽  
pp. 270-272 ◽  
Author(s):  
Hsuan Wei Hu ◽  
John Van Alsten ◽  
Steve Granick

1994 ◽  
Vol 376 ◽  
Author(s):  
Alamgir Karim ◽  
S.K. Satija ◽  
P. Gallagher ◽  
J.F. Douglas ◽  
L.J. Fetters

ABSTRACTNeutron reflection is used to compare the swelling of two chemically end-grafted polystyrene brushes having different grafting densities exposed to a theta solvent cyclohexane and to a good solvent toluene. The relative swelling of tie brushes with a variation of solvent quality becomes smaller and the temperature dependence becomes weaker with an increase of grafting density. This type of swelling is very similar to polymer networks where an increase of cross-linking density leads to a decreased range of swelling and diminished dependence of the swelling. Our model density profile fits to the body of both brushes is parabolic in a good solvent so that some fluctuation effects, as found generally in lower density brushes, are obtained as the brush expands.


2012 ◽  
Vol 65 (5) ◽  
pp. 463 ◽  
Author(s):  
Ming Chiu ◽  
Tak W. Kee ◽  
David M. Huang

A mesoscale coarse-grained model of the conjugated polymer poly(2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene) (MEH-PPV) in implicit solvent is developed. The model is parametrized to reproduce the local structure and dynamics of an atomistic simulation model and accounts for the effects of solvent quality and saturation chemical defects on the polymer structure. Polymers with defect concentrations of 0 to 10 % are simulated using Langevin dynamics in tetrahydrofuran (THF) and in a model poor solvent for chain lengths and solution concentrations used experimentally. The polymer chains are extended in THF and collapse into compact structures in the poor solvent. The radius of gyration decreases with defect content in THF and agrees quantitatively with experiment. The structures formed in poor solvent by chains with 300 monomer units change from toroidal to cylindrical with increasing defect content, while chains containing 1000 monomers form cylinders regardless of defect content. These results have implications for energy transfer in MEH-PPV.


1986 ◽  
Vol 58 (5) ◽  
pp. 887-895 ◽  
Author(s):  
P.G. Khalatur ◽  
Yu.G. Papulov ◽  
A.S. Pavlov

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