scholarly journals Self-Assembled Gels from Biological and Synthetic Polyelectrolytes.

2012 ◽  
Vol 1418 ◽  
Author(s):  
Paul Calvert ◽  
Skander Limem ◽  
Don McCallum ◽  
Gordon Wallace ◽  
Marc in het Panhuis
Keyword(s):  
Elemental Analysis ◽  
Inkjet Printing ◽  
Polymer Complex ◽  
Layer By Layer ◽  
Diffusion Kinetics ◽  
Swelling Properties ◽  
Characterization Methods ◽  
Counter Ions ◽  
Cationic Polyelectrolytes ◽  
And Diffusion

ABSTRACTInkjet printing of alternate layers of anionic and cationic polyelectrolytes allows organized gels to form with structures similar to those made by layer--by-layer dipping methods but very much faster. Structures of gels formed using slow and fast inkjet printing systems are compared using elemental analysis, swelling and diffusion kinetics as characterization methods. After printing and washing, most sodium or chloride counter-ions are last from the gel, leave only the polymer complex. The swelling properties of the printed and washed gel depend on the deposition rate and on the ratio of the two polymers as originally printed. The synthetic polyelectrolytes reported here can be compared with biological polyelectrolytes reported earlier by us.

scholarly journals Integrating layer by layer manufacturing for the realization of polymer complex geometries with scanning devices: re-building by digital data

2021 ◽  
Author(s):  
Carlo Bruni ◽  
Luciano Greco ◽  
Tommaso Mancia ◽  
Massimiliano Pieralisi
Keyword(s):  
Original Data ◽  
Digital Data ◽  
Complex Geometries ◽  
Polymer Complex ◽  
Layer By Layer ◽  
Input File ◽  
3D Scanner ◽  
Photo Polymerization ◽  
Layer Manufacturing ◽  
Computer Aided

The additive manufacturing technique represents a way to realize components or prototypes without the use of conventional tools.The research presented aims at proposing a methodology based on the use of three different techniques that are the poly-jet 3D using UV photo-polymerization, the FDM of polyamide materials and the FDM of PLA materials. The original data were used at the beginning with the first technique in order to detect the shape and the geometry by a 3D SCANNER. The objective was the re-building of a model shape made using a procedure in which the input file characteristics were updated starting from those got by the scanning device in order to respect the original requirements defined in the computer aided environment. It was found that the physical re-building of an object is depending the characteristics of the input file that needs to be digitally processed in order to get the desired shape and geometry. In that way also FDM using PLA and polyamide materials can be utilized to get components or prototypes from scanned digital data. The results are reported in details.

Sulfidation of iron at high temperatures and diffusion kinetics in ferrous sulfide

1982 ◽  
Vol 17 (1-2) ◽  
pp. 77-97 ◽  
Author(s):  
M. Danielewski ◽  
S. Mrowec ◽  
A. Stołosa
Keyword(s):  
High Temperatures ◽  
Diffusion Kinetics ◽  
Ferrous Sulfide ◽  
And Diffusion

A novel approach for precisely controlled multiple cell patterning in microfluidic chips by inkjet printing and the detection of drug metabolism and diffusion

The Analyst ◽  
2016 ◽  
Vol 141 (10) ◽  
pp. 2940-2947 ◽  
Author(s):  
Jie Zhang ◽  
Fengming Chen ◽  
Ziyi He ◽  
Yuan Ma ◽  
Katsumi Uchiyama ◽  
...  
Keyword(s):  
Drug Metabolism ◽  
Inkjet Printing ◽  
Cell Patterning ◽  
Microfluidic Chips ◽  
Cell Printing ◽  
Novel Approach ◽  
Multiple Cell ◽  
And Diffusion

A novel platform for precise cell patterning and analysis in microchips was developed by combining inkjet cell-printing and microfluidic chips.

Revisiting graphene–polymer nanocomposite for enhancing anticorrosion performance: a new insight into interface chemistry and diffusion model

Nanoscale ◽  
2018 ◽  
Vol 10 (26) ◽  
pp. 12612-12624 ◽  
Author(s):  
Dipak Dutta ◽  
Andita Nataria Fitri Ganda ◽  
Jui-Kung Chih ◽  
Cheng-Chun Huang ◽  
Chung-Jen Tseng ◽  
...  
Keyword(s):  
Galvanic Corrosion ◽  
Polymer Nanocomposite ◽  
Diffusion Kinetics ◽  
Interfacial Chemistry ◽  
Interface Chemistry ◽  
Graphene Nanocomposite ◽  
Kinetics Of ◽  
And Diffusion ◽  
Insight Into ◽  
Percolation Network

The interfacial chemistry and diffusion kinetics of a polymer–graphene nanocomposite anticorrosion coating were studied to minimize galvanic corrosion facilitated by the formation of an interconnected graphene percolation network.

Layer-by-layer inkjet printing GO film anchored Ni(OH)2 nanoflakes for high-performance supercapacitors

2019 ◽  
Vol 375 ◽  
pp. 121988 ◽  
Author(s):  
Xueying Li ◽  
Rongrong Chen ◽  
Yunhe Zhao ◽  
Qi Liu ◽  
Jingyuan Liu ◽  
...  
Keyword(s):  
Inkjet Printing ◽  
High Performance ◽  
Layer By Layer

Exciton Generation and Diffusion in Multilayered Organic Solar Cells Designed by Layer-by-Layer Assembly of Poly(p-phenylenevinylene)

2010 ◽  
Vol 2 (1) ◽  
pp. 236-245 ◽  
Author(s):  
Kohji Masuda ◽  
Yoshifumi Ikeda ◽  
Michihiro Ogawa ◽  
Hiroaki Benten ◽  
Hideo Ohkita ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
And Diffusion ◽  
Layer Assembly

scholarly journals Multi-functionalization of nanoporous catalytic materials to enhance reaction yield: Statistical mechanical modeling for conversion reactions with restricted diffusive transport

2014 ◽  
Vol 1641 ◽  
Author(s):  
Jing Wang ◽  
Andrés Garcia ◽  
David M. Ackerman ◽  
Mark S. Gordon ◽  
Igor I. Slowing ◽  
...  
Keyword(s):  
Reaction Diffusion ◽  
Coarse Grained ◽  
Reaction Yield ◽  
Diffusion Kinetics ◽  
Reaction Products ◽  
Dehydration Reactions ◽  
Catalytically Active ◽  
Statistical Mechanical ◽  
And Diffusion ◽  
Reaction Equilibrium

ABSTRACTMulti-functionalization of catalytically-active nanomaterials provides a valuable tool for enhancing reaction yield by shifting reaction equilibrium, and potentially also by adjusting reaction-diffusion kinetics. For example, multi-functionalization of mesoporous silica to make the interior pore surface hydrophobic can enhance yield in dehydration reactions. Detailed molecular-level modeling to describe the pore environment, as well as the reaction and diffusion kinetics is challenging, although we briefly discuss current strategies. Our focus, however, is on coarse-grained stochastic modeling of the overall catalytic process for highly restricted transport within narrow pores (with single-file diffusion), while accounting for a tunable interaction of the pore interior with reaction products. We show that making the pore interior unfavorable to products can significantly enhance yield due to both thermodynamic and kinetics factors.

Implementation of Finite Deformation Triphasic Modeling in the Finite Element Code FEBio

2012 ◽  
Author(s):  
Gerard A. Ateshian ◽  
Steve Maas ◽  
Jeffrey A. Weiss
Keyword(s):  
Soft Tissues ◽  
Mixture Theory ◽  
Solid Matrix ◽  
Osmotic Swelling ◽  
Solute Content ◽  
Counter Ions ◽  
The Matrix ◽  
Triphasic Theory ◽  
Ion Species ◽  
And Diffusion

Many biological soft tissues exhibit a charged solid matrix, most often due to the presence of proteoglycans enmeshed within the matrix. The predominant solute content of the interstitial fluid of these tissues consists of the monovalent counter-ions Na+ and Cl−. The electrical interactions between the mobile ion species and fixed charge density of the solid matrix produces an array of mechano-electrochemical effects, including Donnan osmotic swelling, and streaming and diffusion potentials and currents. These phenomena have been successfully modeled by the triphasic theory of Lai et al. [1], which is based on the framework of mixture theory [2]. Other similar frameworks have also been proposed [3, 4]. The equations of triphasic theory are nonlinear, even in the range of infinitesimal strains. Therefore, numerical schemes are generally needed to solve all but the simplest problems using this framework.

scholarly journals Dissolution and diffusion kinetics of yttria-stabilized zirconia into molten silicates

2021 ◽  
Vol 41 (3) ◽  
pp. 1984-1994
Author(s):  
Collin S. Holgate ◽  
Gareth G.E. Seward ◽  
Andrew R. Ericks ◽  
David L. Poerschke ◽  
Carlos G. Levi
Keyword(s):  
Yttria Stabilized Zirconia ◽  
Diffusion Kinetics ◽  
Stabilized Zirconia ◽  
Kinetics Of ◽  
And Diffusion
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