Neutron reflectivity and computer simulation studies of self-assembled brushes formed by centrally adsorbed star polymers

Ioannis Hiotelis; Alexandros G. Koutsioubas; Nikolaos Spiliopoulos; Dimitris L. Anastassopoulos; Alexandros A. Vradis; Chris Toprakcioglu; Alain Menelle; George Sakellariou; Nikos Hadjichristidis

doi:10.1021/ma702749z

Neutron reflectivity and computer simulation studies of self-assembled brushes formed by centrally adsorbed star polymers

Ioannis Hiotelis, Alexandros G. Koutsioubas, Nikolaos Spiliopoulos, Dimitris L. Anastassopoulos, Alexandros A. Vradis, Chris Toprakcioglu^*, Alain Menelle, George Sakellariou, Nikos Hadjichristidis

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The equilibrium properties of polymer brushes formed by starlike polymers with varying number of arms attached to a surface by their center were studied experimentally with neutron reflectrometry (NR). Polystyrene (PS) stars in a good solvent (toluene) were centrally adsorbed onto a quartz substrate via a zwitterionic anchor group. Increasing the number of arms resulted in significantly lower equilibrium adsorbance, while replacement experiments of a 3-armed star brush by linear chains revealed interesting equilibrium and kinetic features related to the special architecture of star polymers. These results are compared with scaling theoretical calculations and Monte Carlo simulations of centrally adsorbed star polymers that were performed under the bond fluctuation simulation scheme. Several features of the experimental results are reproduced in our simulation study.

Original language	English (US)
Pages (from-to)	7648-7655
Number of pages	8
Journal	Macromolecules
Volume	41
Issue number	20
DOIs	https://doi.org/10.1021/ma702749z
State	Published - Oct 28 2008
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma702749z

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title = "Neutron reflectivity and computer simulation studies of self-assembled brushes formed by centrally adsorbed star polymers",

abstract = "The equilibrium properties of polymer brushes formed by starlike polymers with varying number of arms attached to a surface by their center were studied experimentally with neutron reflectrometry (NR). Polystyrene (PS) stars in a good solvent (toluene) were centrally adsorbed onto a quartz substrate via a zwitterionic anchor group. Increasing the number of arms resulted in significantly lower equilibrium adsorbance, while replacement experiments of a 3-armed star brush by linear chains revealed interesting equilibrium and kinetic features related to the special architecture of star polymers. These results are compared with scaling theoretical calculations and Monte Carlo simulations of centrally adsorbed star polymers that were performed under the bond fluctuation simulation scheme. Several features of the experimental results are reproduced in our simulation study.",

author = "Ioannis Hiotelis and Koutsioubas, {Alexandros G.} and Nikolaos Spiliopoulos and Anastassopoulos, {Dimitris L.} and Vradis, {Alexandros A.} and Chris Toprakcioglu and Alain Menelle and George Sakellariou and Nikos Hadjichristidis",

year = "2008",

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day = "28",

doi = "10.1021/ma702749z",

language = "English (US)",

volume = "41",

pages = "7648--7655",

journal = "Macromolecules",

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TY - JOUR

T1 - Neutron reflectivity and computer simulation studies of self-assembled brushes formed by centrally adsorbed star polymers

AU - Hiotelis, Ioannis

AU - Koutsioubas, Alexandros G.

AU - Spiliopoulos, Nikolaos

AU - Anastassopoulos, Dimitris L.

AU - Vradis, Alexandros A.

AU - Toprakcioglu, Chris

AU - Menelle, Alain

AU - Sakellariou, George

AU - Hadjichristidis, Nikos

PY - 2008/10/28

Y1 - 2008/10/28

N2 - The equilibrium properties of polymer brushes formed by starlike polymers with varying number of arms attached to a surface by their center were studied experimentally with neutron reflectrometry (NR). Polystyrene (PS) stars in a good solvent (toluene) were centrally adsorbed onto a quartz substrate via a zwitterionic anchor group. Increasing the number of arms resulted in significantly lower equilibrium adsorbance, while replacement experiments of a 3-armed star brush by linear chains revealed interesting equilibrium and kinetic features related to the special architecture of star polymers. These results are compared with scaling theoretical calculations and Monte Carlo simulations of centrally adsorbed star polymers that were performed under the bond fluctuation simulation scheme. Several features of the experimental results are reproduced in our simulation study.

AB - The equilibrium properties of polymer brushes formed by starlike polymers with varying number of arms attached to a surface by their center were studied experimentally with neutron reflectrometry (NR). Polystyrene (PS) stars in a good solvent (toluene) were centrally adsorbed onto a quartz substrate via a zwitterionic anchor group. Increasing the number of arms resulted in significantly lower equilibrium adsorbance, while replacement experiments of a 3-armed star brush by linear chains revealed interesting equilibrium and kinetic features related to the special architecture of star polymers. These results are compared with scaling theoretical calculations and Monte Carlo simulations of centrally adsorbed star polymers that were performed under the bond fluctuation simulation scheme. Several features of the experimental results are reproduced in our simulation study.

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U2 - 10.1021/ma702749z

DO - 10.1021/ma702749z

M3 - Article

AN - SCOPUS:55649087800

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VL - 41

SP - 7648

EP - 7655

JO - Macromolecules

JF - Macromolecules

IS - 20

ER -

Neutron reflectivity and computer simulation studies of self-assembled brushes formed by centrally adsorbed star polymers

Abstract

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