A recyclable disulfide bond chemically cross-linking, high toughness, high conductivity ion gel based on re-shaping and restructuring in the gel state

2015 ◽  
Vol 6 (22) ◽  
pp. 4067-4070 ◽  
Author(s):  
Chengsha Wei ◽  
Mingming Chen ◽  
Dong Liu ◽  
Weiming Zhou ◽  
Majid Khan ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Disulfide Bond ◽  
High Conductivity ◽  
Cross Linking ◽  
High Toughness ◽  
Ion Gel

We report the recyclability of a disulfide bond cross-linking ion gel with high toughness and ionic conductivity based on re-shaping and restructuring in the gel state.

Synthesis of recyclable, chemically cross-linked, high toughness, high conductivity ion gels by sequential triblock copolymer self-assembly and disulfide bond cross-linking

RSC Advances ◽  
2015 ◽  
Vol 5 (29) ◽  
pp. 22638-22646 ◽  
Author(s):  
Chengsha Wei ◽  
Mingming Chen ◽  
Dong Liu ◽  
Weiming Zhou ◽  
Majid Khan ◽  
...  
Keyword(s):  
Disulfide Bond ◽  
Self Assembly ◽  
Triblock Copolymer ◽  
High Conductivity ◽  
Cross Linking ◽  
High Toughness ◽  
Ion Gels

We reported the synthesis of a high toughness, high conductivity ion gels by a sequential triblock copolymer self-assembly and disulfide bond cross-linking, combining the high toughness of chemical with recyclability of physical cross-linking ones.

High Toughness, High Conductivity Ion Gels by Sequential Triblock Copolymer Self-Assembly and Chemical Cross-Linking

2013 ◽  
Vol 135 (26) ◽  
pp. 9652-9655 ◽  
Author(s):  
Yuanyan Gu ◽  
Sipei Zhang ◽  
Luca Martinetti ◽  
Keun Hyung Lee ◽  
Lucas D. McIntosh ◽  
...  
Keyword(s):  
Self Assembly ◽  
Triblock Copolymer ◽  
High Conductivity ◽  
Cross Linking ◽  
High Toughness ◽  
Ion Gels ◽  
Chemical Cross Linking

scholarly journals Effects of an Interchain Disulfide Bond on Tropomyosin Structure: A Molecular Dynamics Study

2018 ◽  
Vol 19 (11) ◽  
pp. 3376 ◽  
Author(s):  
Natalia A. Koubassova ◽  
Sergey Y. Bershitsky ◽  
Andrey K. Tsaturyan
Keyword(s):  
Heart Failure ◽  
Molecular Dynamics ◽  
Disulfide Bond ◽  
Coiled Coil ◽  
Middle Part ◽  
Actin Binding ◽  
Cross Linking ◽  
Interchain Disulfide Bond ◽  
Structural And Functional Properties ◽  
The Cross

Tropomyosin (Tpm) is a coiled-coil actin-binding dimer protein that participates in the regulation of muscle contraction. Both Tpm chains contain Cys190 residues which are normally in the reduced state, but form an interchain disulfide bond in failing heart. Changes in structural and functional properties of Tpm and its complexes with actin upon disulfide cross-linking were studied using various experimental methods. To understand the molecular mechanism underlying these changes and to reveal the possible mechanism of the involvement of the cross-linking in heart failure, molecular dynamics (MD) simulations of the middle part of Tpm were performed in cross-linked and reduced states. The cross-linking increased bending stiffness of Tpm assessed from MD trajectories at 27 °C in agreement with previous experimental observations. However, at 40 °C, the cross-linking caused a decrease in Tpm stiffness and a significant reduction in the number of main chain hydrogen bonds in the vicinity of residues 133 and 134. These data are in line with observations showing enhanced thermal unfolding of the least stable part of Tpm at 30–40 °C and accelerated trypsin cleavage at residue 133 at 40 °C (but not at 27 °C) upon cross-linking. These results allow us to speculate about the possible mechanism of involvement of Tpm cross-linking to heart failure pathogenesis.

scholarly journals Optically transparent, high-toughness elastomer using a polyrotaxane cross-linker as a molecular pulley

2018 ◽  
Vol 4 (10) ◽  
pp. eaat7629 ◽  
Author(s):  
Hiroaki Gotoh ◽  
Chang Liu ◽  
Abu Bin Imran ◽  
Mitsuo Hara ◽  
Takahiro Seki ◽  
...  
Keyword(s):  
External Force ◽  
Matrix Material ◽  
Three Dimensional ◽  
Cross Linking ◽  
High Toughness ◽  
Dimensional Network ◽  
Cyclic Molecules ◽  
Optically Transparent ◽  
The Matrix ◽  
Special Challenge

An elastomer is a three-dimensional network with a cross-linked polymer chain that undergoes large deformation with a small external force and returns to its original state when the external force is removed. Because of this hyperelasticity, elastomers are regarded as one of the best candidates for the matrix material of soft robots. However, the comprehensive performance required of matrix materials is a special challenge because improvement of some matrix properties often causes the deterioration of others. For example, an improvement in toughness can be realized by adding a large amount of filler to an elastomer, but to the impairment of optical transparency. Therefore, to produce an elastomer exhibiting optimum properties suitable for the desired purpose, very elaborate, complicated materials are often devised. Here, we have succeeded in creating an optically transparent, easily fabricated elastomer with good extensibility and high toughness by using a polyrotaxane (PR) composed of cyclic molecules and a linear polymer as a cross-linking agent. In general, elastomers having conventional cross-linked structures are susceptible to breakage as a result of loss of extensibility at high cross-linking density. We found that the toughness of the transparent elastomer prepared using the PR cross-linking agent is enhanced along with its Young’s modulus as cross-linking density is increased.

Poly(ionic liquid)s with controlled architectures and their use in the making of ionogels with high conductivity and tunable rheological properties

2016 ◽  
Vol 7 (43) ◽  
pp. 6608-6616 ◽  
Author(s):  
H. Srour ◽  
M. Leocmach ◽  
V. Maffeis ◽  
A. C. Ghogia ◽  
S. Denis-Quanquin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Rheological Properties ◽  
High Conductivity ◽  
Cross Linking ◽  
Poly Ionic Liquid

We describe the preparation as well as the electrochemical and mechanical properties of a series of novel well-defined poly(ionic liquids) (PILs) featuring a finely tuned cross-linking ratio.

Fabrication of High Toughness Poly(lactic acid) by Combining Plasticization with Cross-linking Reaction

2012 ◽  
Vol 51 (21) ◽  
pp. 7273-7278 ◽  
Author(s):  
Zhongjie Ren ◽  
Huihui Li ◽  
Xiaoli Sun ◽  
Shouke Yan ◽  
Yuming Yang
Keyword(s):  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Cross Linking ◽  
High Toughness

Study on the Striitiires, Electrical, Properities of the Multicrystal Multiphase Material Li2Mo2-xWx06

1990 ◽  
Vol 210 ◽  
Author(s):  
Cui Wanqiu ◽  
Shen Zhiqi ◽  
Zhou Debao
Keyword(s):  
Activation Energy ◽  
Ionic Conductivity ◽  
Electrical Properties ◽  
Esr Spectra ◽  
High Conductivity ◽  
Structure Model ◽  
Tungsten Content ◽  
Micro Structure ◽  
Multiphase Material ◽  
Two Phases

AbstractThe multicrystal multiphase ceramics material. Li2Mo2Wx06, with high conductivity is prepared. By XPD, EDX graph, IR and ESR spectra, it's determined that the samples are composed of two phases.Li2MO1-xWx04 and MoO2. The electrical properties are studied by AC admittance bridge and comptex impedance cpectroscopy. The ionic conductivity increases and conducted activation energy decreases with the tungsten content increasing. The micro-structure model. and the ionic conducted mechanism are given in this paper.

scholarly journals The effect of Poly(Ethylene oxide) cross-linking structure on the mechanical properties and CO2 separation performance of an ion gel membrane

Polymer ◽  
2019 ◽  
Vol 180 ◽  
pp. 121666 ◽  
Author(s):  
Victor A. Kusuma ◽  
Christina Chen ◽  
James S. Baker ◽  
Megan K. Macala ◽  
David Hopkinson
Keyword(s):  
Mechanical Properties ◽  
Ethylene Oxide ◽  
Cross Linking ◽  
Co2 Separation ◽  
Separation Performance ◽  
Poly Ethylene Oxide ◽  
Ion Gel ◽  
Poly Ethylene
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