scholarly journals One Step ATRP Initiator Immobilization on Surfaces Leading to Gradient-Grafted Polymer Brushes

2014 ◽  
Vol 6 (10) ◽  
pp. 7782-7789 ◽  
Author(s):  
Bryan R. Coad ◽  
Katie E. Styan ◽  
Laurence Meagher
Keyword(s):  
Polymer Brushes ◽  
Grafted Polymer ◽  
One Step

scholarly journals One-step synthesis of patterned polymer brushes by photocatalytic microcontact printing

2015 ◽  
Vol 51 (6) ◽  
pp. 1027-1030 ◽  
Author(s):  
Friederike Kettling ◽  
Benjamin Vonhören ◽  
Jennifer A. Krings ◽  
Susumu Saito ◽  
Bart Jan Ravoo
Keyword(s):  
Polymer Brushes ◽  
Microcontact Printing ◽  
One Step ◽  
Novel Method

A novel method to prepare microstructured polymer brushes using TiO2 nanoparticles and photocatalytic microcontact printing is described.

Graftfast©: Towards the Control of Surface Properties of any Type of Materials by the Grafting of Polymers

2012 ◽  
Vol 445 ◽  
pp. 797-802 ◽  
Author(s):  
Alice Mesnage ◽  
Pardis Simon ◽  
Guy Deniau ◽  
Nathalie Herlin-Boime ◽  
Serge Palacin
Keyword(s):  
Surface Properties ◽  
Polymer Films ◽  
Atmospheric Pressure ◽  
Room Temperature ◽  
Diazonium Salts ◽  
Green Process ◽  
Graft Polymer ◽  
Grafted Polymer ◽  
Aryl Radicals ◽  
One Step

This document aims at presenting and explaining the mechanism of a simple green process, called Graftfast©, recently developed in order to graft polymer films onto any type of materials. This process is of great interest as it works in a short one step reaction at room temperature, atmospheric pressure in water. Particularly since this method is a redoxinduced process consisting in the reduction of diazonium salts into aryl radicals in presence of vinylic monomer, the involvement of such radicals was investigated. Moreover, this work demonstrates the efficiency of such process for the preparation of functionalized TiO2 nanoparticles. The composition and the grafted polymer quantities were investigated showing the successful grafting of the polymer onto the nanoparticles while conserving their morphology.

scholarly journals Effect of Structure of Polymers Grafted from Graphene Oxide on the Compatibility of Particles with a Silicone-Based Environment and the Stimuli-Responsive Capabilities of Their Composites

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 591 ◽  
Author(s):  
Monika Zygo ◽  
Miroslav Mrlik ◽  
Marketa Ilcikova ◽  
Martina Hrabalikova ◽  
Josef Osicka ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Graphene Oxide ◽  
Radical Polymerization ◽  
Polymer Brushes ◽  
Silicone Oil ◽  
Polymer Chains ◽  
Butyl Methacrylate ◽  
Raman Shift ◽  
Stimuli Responsive ◽  
Grafted Polymer

This study reports the utilization of controlled radical polymerization as a tool for controlling the stimuli-responsive capabilities of graphene oxide (GO) based hybrid systems. Various polymer brushes with controlled molecular weight and narrow molecular weight distribution were grafted from the GO surface by surface-initiated atom transfer radical polymerization (SI-ATRP). The modification of GO with poly(n-butyl methacrylate) (PBMA), poly(glycidyl methacrylate) (PGMA), poly(trimethylsilyloxyethyl methacrylate) (PHEMATMS) and poly(methyl methacrylate) (PMMA) was confirmed by thermogravimetric analysis (TGA) coupled with online Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Various grafting densities of GO-based materials were investigated, and conductivity was elucidated using a four-point probe method. Raman shift and XPS were used to confirm the reduction of surface properties of the GO particles during SI-ATRP. The contact angle measurements indicated the changes in the compatibility of GOs with silicone oil, depending on the structure of the grafted polymer chains. The compatibility of the GOs with poly(dimethylsiloxane) was also investigated using steady shear rheology. The tunability of the electrorheological, as well as the photo-actuation capability, was investigated. It was shown that in addition to the modification of conductivity, the dipole moment of the pendant groups of the grafted polymer chains also plays an important role in the electrorheological (ER) performance. The compatibility of the particles with the polymer matrix, and thus proper particles dispersibility, is the most important factor for the photo-actuation efficiency. The plasticizing effect of the GO-polymer hybrid filler also has a crucial impact on the matrix stiffness and thus the ability to reversibly respond to the external light stimulation.

Reversibly Cross-Linked Surface-Grafted Polymer Brushes

2006 ◽  
Vol 118 (46) ◽  
pp. 7976-7978 ◽  
Author(s):  
David M. Loveless ◽  
Nehal I. Abu-Lail ◽  
Marian Kaholek ◽  
Stefan Zauscher ◽  
Stephen L. Craig
Keyword(s):  
Polymer Brushes ◽  
Grafted Polymer

Monte Carlo simulations of the static friction between two grafted polymer brushes

2016 ◽  
Vol 18 (8) ◽  
pp. 6164-6174 ◽  
Author(s):  
Ana C. F. Mendonça ◽  
Florent Goujon ◽  
Patrice Malfreyt ◽  
Dominic J. Tildesley
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Monte Carlo Simulations ◽  
Polymer Brushes ◽  
Static Friction ◽  
Grafted Polymer

A configurational bias Monte Carlo method has been developed to calculate the static friction between two grafted polymer brushes.

Surface Instabilities of Monodisperse and Densely Grafted Polymer Brushes

2008 ◽  
Vol 41 (13) ◽  
pp. 5070-5072 ◽  
Author(s):  
Holger Merlitz ◽  
Gui-Li He ◽  
Chen-Xu Wu ◽  
Jens-Uwe Sommer
Keyword(s):  
Polymer Brushes ◽  
Grafted Polymer

scholarly journals Precise growth of polymer brushes on silica-based nanocomposites via visible-light-regulated controlled radical polymerization

2019 ◽  
Vol 7 (11) ◽  
pp. 6173-6179 ◽  
Author(s):  
Xue Li ◽  
Sunjie Ye ◽  
Ya Huang ◽  
Jia Le Li ◽  
Tao Cai
Keyword(s):  
Physicochemical Properties ◽  
Visible Light ◽  
Radical Polymerization ◽  
Polymer Nanocomposites ◽  
Polymer Brushes ◽  
Controlled Radical Polymerization ◽  
Crucial Importance ◽  
Grafted Polymer ◽  
Precise Control

Precise control over molecular variables of grafted polymer brushes is of crucial importance for obtaining polymer nanocomposites with desirable architectures and physicochemical properties, yet it remains a significant synthetic challenge.

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