Stratification in Monolayers of a Bidisperse Melt Polymer Brush As Revealed by Neutron Reflectivity

1999 ◽  
Vol 32 (22) ◽  
pp. 7599-7609 ◽  
Author(s):  
Werner A. Goedel ◽  
Clarisse Luap ◽  
Ralf Oeser ◽  
Peter Lang ◽  
Christian Braun ◽  
...  
Keyword(s):  
Polymer Brush ◽  
Neutron Reflectivity

Neutron Reflectivity Study of the Density Profile of a Model End-Grafted Polymer Brush: Influence of Solvent Quality

1994 ◽  
Vol 73 (25) ◽  
pp. 3407-3410 ◽  
Author(s):  
A. Karim ◽  
S. K. Satija ◽  
J. F. Douglas ◽  
J. F. Ankner ◽  
L. J. Fetters
Keyword(s):  
Density Profile ◽  
Polymer Brush ◽  
Neutron Reflectivity ◽  
Grafted Polymer ◽  
Solvent Quality ◽  
Influence Of Solvent

Effect of Solvent Flow on a Polymer Brush:  A Neutron Reflectivity Study of the Brush Height and Chain Density Profile

Langmuir ◽  
2001 ◽  
Vol 17 (10) ◽  
pp. 2999-3005 ◽  
Author(s):  
R. Ivkov ◽  
P. D. Butler ◽  
S. K. Satija ◽  
L. J. Fetters
Keyword(s):  
Density Profile ◽  
Polymer Brush ◽  
Neutron Reflectivity ◽  
Effect Of Solvent ◽  
Brush Height ◽  
Solvent Flow

Multi-Stimuli-Responsive Mesoporous Membranes and Effect of Molecular Architecture on Thermo- and pH-Responsive Behavior of the grafted Block Copolymer brushes

2019 ◽  
Author(s):  
Yanchun Tang ◽  
Kohzo Ito ◽  
Hideaki Yokoyama
Keyword(s):  
Polymer Brushes ◽  
Diblock Copolymers ◽  
Neutron Reflectivity ◽  
Molecular Architecture ◽  
Stimuli Responsive ◽  
Responsive Polymer ◽  
The Matrix ◽  
Stable Part ◽  
Copolymer Brushes ◽  
Mesoporous Membranes

In this study, we prepared ultrafiltration membranes with a decoupled responses of filtration property to temperature and pH. The membrane preparation method was developed based on our previous work. We utilized methanol-supercritical carbon dioxide (methanol-scCO<sub>2</sub>) selective swelling method to introduce nanopores to block copolymers containing poly(diethylene glycol) methyl ether methacrylate (PMEO<sub>2</sub>MA), poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) and polystyrene (PS) blocks. Formation of the mesoporous barrier layer with PS being the mechanically stable part of the matrix was driven by selective swelling of the PMEO<sub>2</sub>MA-b-PDMAEMA domains. Due to the selective swelling of PMEO<sub>2</sub>MA or PDMAEMA domains to introduce pores, the interior of the pores are covered with PMEO<sub>2</sub>MA or PDMAEMA blocks after pore formation. The PMEO<sub>2</sub>MA-b-PDMAEMA polymer brushes are naturally attached on the pore walls and worked as functional gates. PMEO<sub>2</sub>MA is a non-toxic, neutral thermo-responsive polymer with LCST at 26 ᴼC. PDMAEMA is a typical weak polyelectrolyte with pK<sub>a</sub> value at 7.0-7.5 and also a thermo-responsive polymer revealed a LCST of 20-80 °C in aqueous solution. Therefore, these membranes were expected to have multi dimensions as function of the combination of temperature and pH. Moreover, to understand the detail of the temperature and pH depended conformation transitions of PMEO<sub>2</sub>MA-b-PDMAEMA brushes, those diblock copolymers were end-tethered on flat substrates and analyzed via neutron reflectivity (NR).

Polymer brush based fluorescent immunosensor for direct monitoring of interleukin-1β in rat blood

The Analyst ◽  
2019 ◽  
Vol 144 (19) ◽  
pp. 5682-5690 ◽  
Author(s):  
Fei Deng ◽  
Yi Li ◽  
Md Jakir Hossain ◽  
Michael D. Kendig ◽  
Ria Arnold ◽  
...  
Keyword(s):  
Whole Blood ◽  
Polymer Brush ◽  
Interleukin 1Β ◽  
Rat Blood

A sandwich immunosensor was successfully developed for monitoring of interleukin-1β (IL-1β) in rat whole blood.

Rapid and high-capacity loading of IgG monoclonal antibodies by polymer brush and peptides functionalized microspheres

2021 ◽  
Vol 1640 ◽  
pp. 461948
Author(s):  
Dongxia Hao ◽  
Rongyue Zhang ◽  
Jia Ge ◽  
Peili Ye ◽  
Cui Song ◽  
...  
Keyword(s):  
Monoclonal Antibodies ◽  
Polymer Brush ◽  
High Capacity ◽  
Capacity Loading

Structural Determination of High Density, ATRP Grown Polystyrene Brushes by Neutron Reflectivity

2009 ◽  
Vol 42 (24) ◽  
pp. 9523-9527 ◽  
Author(s):  
John R. Ell ◽  
Dennis E. Mulder ◽  
Roland Faller ◽  
Timothy E. Patten ◽  
Tonya L. Kuhl
Keyword(s):  
High Density ◽  
Neutron Reflectivity ◽  
Structural Determination

scholarly journals High-Efficiency Responsive Smart Windows Fabricated by Carbon Nanotubes Modified by Liquid Crystalline Polymers

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 440
Author(s):  
Yuan Deng ◽  
Shi-Qin Li ◽  
Qian Yang ◽  
Zhi-Wang Luo ◽  
He-Lou Xie
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Crystalline ◽  
Near Infrared ◽  
High Efficiency ◽  
Polymer Brush ◽  
Light Transmittance ◽  
Smart Window ◽  
Vertical Orientation ◽  
Smart Windows ◽  
Conversion Materials

Smart windows can dynamically and adaptively adjust the light transmittance in non-energy or low-energy ways to maintain a comfortable ambient temperature, which are conducive to efficient use of energy. This work proposes a liquid crystal (LC) smart window with highly efficient near-infrared (NIR) response using carbon nanotubes grafted by biphenyl LC polymer brush (CNT-PDB) as the orientation layer. The resultant CNT-PDB polymer brush can provide the vertical orientation of LC molecules to maintain the initial transparency. At the same time, the smart window shows a rapid response to NIR light, which can quickly adjust the light transmittance to prevent sunlight from entering the room. Different from common doping systems, this method avoids the problem of poor compatibility between the LC host and photothermal conversion materials, which is beneficial for improving the durability of the device.

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