scholarly journals Morphological control of grafted polymer films via attraction to small nanoparticle inclusions

2012 ◽  
Vol 86 (3) ◽  
Author(s):  
Michael G. Opferman ◽  
Rob D. Coalson ◽  
David Jasnow ◽  
Anton Zilman
Keyword(s):  
Polymer Films ◽  
Morphological Control ◽  
Grafted Polymer ◽  
Nanoparticle Inclusions

scholarly journals Molecular Dynamics Study of the Adhesion between End-Grafted Polymer Films II —Effect of Grafting Density—

2006 ◽  
Vol 39 (1) ◽  
pp. 73-80 ◽  
Author(s):  
Hiroshi Morita ◽  
Haruki Miura ◽  
Masamichi Yamada ◽  
Tetsuo Yamaguchi ◽  
Masao Doi
Keyword(s):  
Molecular Dynamics ◽  
Polymer Films ◽  
Grafted Polymer ◽  
Grafting Density

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.

Temperature-responsive characteristics of N-isopropylacrylamide-grafted polymer films prepared by photografting

1994 ◽  
Vol 51 (5) ◽  
pp. 925-929 ◽  
Author(s):  
Hitoshi Kubota ◽  
Noriyasu Nagaoka ◽  
Ryoichi Katakai ◽  
Masaru Yoshida ◽  
Hideki Omichi ◽  
...  
Keyword(s):  
Polymer Films ◽  
Grafted Polymer ◽  
Temperature Responsive

Stimuli-Responsive Mixed Grafted Polymer Films with Gradually Changing Properties:  Direct Determination of Chemical Composition

Langmuir ◽  
2005 ◽  
Vol 21 (19) ◽  
pp. 8711-8716 ◽  
Author(s):  
Leonid Ionov ◽  
Alexander Sidorenko ◽  
Klaus-Jochen Eichhorn ◽  
Manfred Stamm ◽  
Sergiy Minko ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Polymer Films ◽  
Direct Determination ◽  
Stimuli Responsive ◽  
Grafted Polymer

scholarly journals A 3D-polyphenylalanine network inside porous alumina: Synthesis and characterization of an inorganic–organic composite membrane

2020 ◽  
Vol 11 ◽  
pp. 938-951
Author(s):  
Jonathan Stott ◽  
Jörg J Schneider
Keyword(s):  
Composite Membrane ◽  
Polymer Films ◽  
Near Infrared ◽  
Mechanical Stability ◽  
Volume Fraction ◽  
Solid Phase ◽  
Porous Alumina ◽  
Dichloroacetic Acid ◽  
Solvent Mixtures ◽  
Grafted Polymer

Surface functionalization of porous materials allows for the introduction of additional functionality coupled with high mechanical stability of functionalized inner pores. Herein, we investigate the surface-initiated ring-opening polymerization (SI-ROP) of phenylalanine-N-carboxyanhydride (PA-NCA) in porous alumina membranes (ALOX-membranes) with respect to different solvent mixtures (tetrahydrofuran (THF) and dichloromethane (DCM)). It was found that increasing the volume fraction of DCM leads to an increasing amount of fibrillar polymer structures within the porous ALOX-membrane. A three-dimensional fibrillar network with intrinsic porosity was formed in DCM, whereas in THF, a dense and smooth polypeptide film was observed. A post-treatment with a mixture of chloroform and dichloroacetic acid leads to rearrangement of the morphology of the grafted polymer films. The analysis by scanning electron microscopy (SEM), near-infrared spectroscopy (NIR) and contact angle measurements (CA) reveals a change in morphology of the grafted polymer films, which is due to the rearrangement of the secondary structure of the polypeptides. No significant loss of the surface-grafted polypeptides was determined by thermogravimetric (TG) measurements, which indicates that the change in morphology of the polymer films is solely a result of a conformational change of the surface-grafted polypeptides. Furthermore, adsorption of a test analyte (chloroanilic acid) was investigated with respect to different polymer functionalization schemes for reversed-phase solid phase extraction applications. The adsorption capability of the functionalized composite membrane was increased from 16.7% to 38.1% compared to the native ALOX-membrane.

scholarly journals Molecular Dynamics Study of the Adhesion between End-grafted Polymer Films

2005 ◽  
Vol 37 (10) ◽  
pp. 782-788 ◽  
Author(s):  
Hiroshi Morita ◽  
Masamichi Yamada ◽  
Tetsuo Yamaguchi ◽  
Masao Doi
Keyword(s):  
Molecular Dynamics ◽  
Polymer Films ◽  
Grafted Polymer

Characterization of radiation-grafted polymer films using CP/MAS NMR spectroscopy and confocal Raman microscopy

2012 ◽  
Vol 125 (5) ◽  
pp. 3500-3508 ◽  
Author(s):  
Frank Wallasch ◽  
Matthias Abele ◽  
Lorenz Gubler ◽  
Alexander Wokaun ◽  
Klaus Müller ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Polymer Films ◽  
Raman Microscopy ◽  
Mas Nmr ◽  
Confocal Raman Microscopy ◽  
Grafted Polymer ◽  
Confocal Raman ◽  
Cp Mas Nmr
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