pH-Sensitive graphene oxide/sodium alginate/polyacrylamide nanocomposite semi-IPN hydrogel with improved mechanical strength

RSC Advances ◽  
2015 ◽  
Vol 5 (108) ◽  
pp. 89083-89091 ◽  
Author(s):  
Huijuan Zhang ◽  
Xianjuan Pang ◽  
Yuan Qi
Keyword(s):  
Graphene Oxide ◽  
Mechanical Strength ◽  
Sodium Alginate ◽  
Ph Sensitive ◽  
Swelling Behavior ◽  
Ph Dependent

A pH-sensitive and mechanically strong graphene oxide/sodium alginate/polyacrylamide nanocomposite semi-IPN hydrogel was designed and prepared. The composite semi-IPN hydrogel showed superior mechanical strength and pH-dependent swelling behavior.

Graphene oxide/polyacrylamide/carboxymethyl cellulose sodium nanocomposite hydrogel with enhanced mechanical strength: preparation, characterization and the swelling behavior

RSC Advances ◽  
2014 ◽  
Vol 4 (84) ◽  
pp. 44600-44609 ◽  
Author(s):  
Huijuan Zhang ◽  
Dandan Zhai ◽  
Yang He
Keyword(s):  
Compressive Strength ◽  
Graphene Oxide ◽  
Mechanical Strength ◽  
Carboxymethyl Cellulose ◽  
Swelling Behavior ◽  
Nanocomposite Hydrogel ◽  
Carboxymethyl Cellulose Sodium

A ternary GO/PAM/CMC nanocomposite hydrogel was fabricated by introducing GO into PAM/CMC hydrogels followed by ionically crosslinking of Al3+. The compressive strength of the ternary hydrogel was dramatically enhanced with the incorporation of only 1.6 wt% GO sheets.

Direct growth of thermally reduced graphene oxide on carbon fiber for enhanced mechanical strength

2020 ◽  
Vol 193 ◽  
pp. 108010
Author(s):  
Beom-Gon Cho ◽  
Shalik Ram Joshi ◽  
Jaekyo Lee ◽  
Young-Bin Park ◽  
Gun-Ho Kim
Keyword(s):  
Graphene Oxide ◽  
Carbon Fiber ◽  
Mechanical Strength ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Direct Growth

A new luminol chemiluminescence sensor for glucose based on pH-dependent graphene oxide

The Analyst ◽  
2013 ◽  
Vol 138 (15) ◽  
pp. 4393 ◽  
Author(s):  
Minjia Hao ◽  
Na Liu ◽  
Zhanfang Ma
Keyword(s):  
Graphene Oxide ◽  
Luminol Chemiluminescence ◽  
Ph Dependent

U(VI) adsorption by sodium alginate/graphene oxide composite beads in water

2021 ◽  
Author(s):  
Dianxin Li ◽  
Peng Zhang ◽  
Yiqing Yang ◽  
Yuqi Huang ◽  
Tao Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Sodium Alginate ◽  
Oxide Composite ◽  
Composite Beads

scholarly journals Synthesis of Sodium Alginate Graphene Oxide Thin Film for Adsorption Application

2020 ◽  
Vol 596 ◽  
pp. 012020
Author(s):  
Farah Amanina Mohd Zin ◽  
An’amt Mohamed Noor ◽  
Wan Nurshafeera Wan Mohd Nasri ◽  
Nurul Natasya Rosli ◽  
Nur Aqilah Buniamin ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Sodium Alginate ◽  
Oxide Thin Film

scholarly journals Cofilin is a pH sensor for actin free barbed end formation: role of phosphoinositide binding

2008 ◽  
Vol 183 (5) ◽  
pp. 865-879 ◽  
Author(s):  
Christian Frantz ◽  
Gabriela Barreiro ◽  
Laura Dominguez ◽  
Xiaoming Chen ◽  
Robert Eddy ◽  
...  
Keyword(s):  
Actin Filament ◽  
Structural Changes ◽  
Ph Sensor ◽  
Ph Sensitive ◽  
Actin Binding ◽  
Filamentous Actin ◽  
Filament Dynamics ◽  
Ph Dependent ◽  
Dynamics Simulations

Newly generated actin free barbed ends at the front of motile cells provide sites for actin filament assembly driving membrane protrusion. Growth factors induce a rapid biphasic increase in actin free barbed ends, and we found both phases absent in fibroblasts lacking H+ efflux by the Na-H exchanger NHE1. The first phase is restored by expression of mutant cofilin-H133A but not unphosphorylated cofilin-S3A. Constant pH molecular dynamics simulations and nuclear magnetic resonance (NMR) reveal pH-sensitive structural changes in the cofilin C-terminal filamentous actin binding site dependent on His133. However, cofilin-H133A retains pH-sensitive changes in NMR spectra and severing activity in vitro, which suggests that it has a more complex behavior in cells. Cofilin activity is inhibited by phosphoinositide binding, and we found that phosphoinositide binding is pH-dependent for wild-type cofilin, with decreased binding at a higher pH. In contrast, phosphoinositide binding by cofilin-H133A is attenuated and pH insensitive. These data suggest a molecular mechanism whereby cofilin acts as a pH sensor to mediate a pH-dependent actin filament dynamics.

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