Prev. Article Next Article Table of Contents

Research Article

Effect of Chain Architecture on Adsorption from Dilute Solution: ω-Functionalized Linear and Mono-, Di-, and Tri-ω-functionalized Three-Arm Star Polybutadienes

Figures
Citing Articles

Your current credentials do not allow retrieval of the full text.

Purchase the full-text

PDF/HTML,
figures/images,
references and tables,
(where available)

Denise F. Siqueira,^† Marinos Pitsikalis,^‡ Nikos Hadjichristidis,^‡ and Manfred Stamm*^†

Max Planck Institut für Polymerforschung, Ackermannweg 10, 55021 Mainz, Germany, and Department of Chemistry, University of Athens, Panepistimiopolis-Zografou, 15771 Athens, Greece

Langmuir, 1996, 12 (6), pp 1631–1637

DOI: 10.1021/la950929a

Publication Date (Web): March 20, 1996

Section:

Physical Properties of Synthetic High Polymers

Abstract

The adsorption behavior of ω-functionalized linear and mono-, di-, and tri-ω-functionalized three-arm star polybutadiene (PB) samples from the mixed solvent of cyclohexane and toluene (50% by volume) on silicon wafers is investigated by means of null-ellipsometry at 20.0 °C. Under these conditions no association of the sulfozwitterionic functional groups is detected in solution with dynamic light scattering, and there is sufficient contrast for in situ ellipsometric adsorption measurements. The adsorbed end-functionalized linear PB chains have a “brushlike” conformation. In the case of the functionalized star PB, the adsorbed amount increases when the number of functionalized arms increases from 1 to 3. However, the grafting density is more influenced by the molecular weight than by the number of functional groups. The adsorbed stars are less stretched than the linear chains. The adsorption energy is calculated as (9 ± 1)kT. The diffusion coefficient and hydrodynamic radius are determined with dynamic light scattering. The adsorption kinetics from time-resolved ellipsometric measurements show two regimes: (i) a diffusion-controlled process at the initial stages and (ii) at longer times, an exponential behavior, where the arriving chains must penetrate a barrier formed by the already adsorbed chains. The stars penetrate this barrier faster than the linear PB chains.

View: Full Text HTML | Hi-Res PDF | PDF w/ Links

Citing Articles

View all 6 citing articles

Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.

This article has been cited by 3 ACS Journal articles (3 most recent appear below).

Chemical and Structural Changes in a pH-Responsive Mixed Polyelectrolyte Brush Studied by Infrared Ellipsometry
Karsten Hinrichs, Dennis Aulich, Leonid Ionov, Norbert Esser, Klaus-Jochen Eichhorn, Mikhail Motornov, Manfred Stamm and Sergiy Minko
Langmuir2009 25 (18), 10987-10991
- Chemical and Structural Changes in a pH-Responsive Mixed Polyelectrolyte Brush Studied by Infrared Ellipsometry
  Karsten Hinrichs, Dennis Aulich, Leonid Ionov, Norbert Esser, Klaus-Jochen Eichhorn, Mikhail Motornov, Manfred Stamm and Sergiy Minko
  Langmuir2009 25 (18), 10987-10991
  This work provides direct chemical and structural insight into pH-dependent changes of an ultrathin (d = 12 nm) mixed polyelectrolyte brush. In-situ infrared spectroscopic ellipsometry was used for the first time to study the gradual pH-responsive ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
Adsorption Behavior of Carboxymethylcellulose on Amino-Terminated Surfaces
J. Fujimoto and D. F. S. Petri
Langmuir2001 17 (1), 56-60
- Adsorption Behavior of Carboxymethylcellulose on Amino-Terminated Surfaces
  J. Fujimoto and D. F. S. Petri
  Langmuir2001 17 (1), 56-60
  The adsorption behavior of carboxymethyl cellulose onto amino-terminated surfaces was investigated by means of ellipsometry. The adsorbed amount decreases with ionic strength decrease, in agreement with the screening-reduced adsorption regime. The pH has ...
  Abstract | Full Text HTML | Hi-Res PDF
Functionalized Polymers with Dimethylamine and Sulfozwitterionic End-Groups
Nikos Hadjichristidis, Marinos Pitsikalis, and Stergios Pispas
1998 704 (), 96-120
- Functionalized Polymers with Dimethylamine and Sulfozwitterionic End-Groups
  Nikos Hadjichristidis, Marinos Pitsikalis, and Stergios Pispas
  1998 704 (), 96-120
  The synthesis of end-functionalized (telechelic or semitelechelic) polymers has been the subject of numerous studies over the last decades due to both the academic and industrial interest developed for these polymers (1-4). The incorporation of end groups ...
  Abstract | Hi-Res PDF | PDF w/ Links