scholarly journals Novel Biological Hydrogel: Swelling Behaviors Study in Salt Solutions with Different Ionic Valence Number

Polymers ◽  
2018 ◽  
Vol 10 (2) ◽  
pp. 112 ◽  
Author(s):  
Yu Wang ◽  
Guidong He ◽  
Zheng Li ◽  
Jiachuan Hua ◽  
Maoqi Wu ◽  
...  
Keyword(s):  
Salt Solutions ◽  
Ionic Valence ◽  
Hydrogel Swelling ◽  
Valence Number ◽  
Swelling Behaviors

scholarly journals Preparation of γ-PGA hydrogels and swelling behaviors in salt solutions with different ionic valence numbers

RSC Advances ◽  
2017 ◽  
Vol 7 (18) ◽  
pp. 11085-11093 ◽  
Author(s):  
Zheng Li ◽  
Guidong He ◽  
Jiachuan Hua ◽  
Maoqi Wu ◽  
Wen Guo ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Glutamic Acid ◽  
Diglycidyl Ether ◽  
Solution Polymerization ◽  
Salt Solutions ◽  
Ionic Valence ◽  
Swelling Behaviors

In this paper, a novel poly γ-glutamic acid (γ-PGA) hydrogel was successfully synthesized by solution polymerization and ethylene glycol diglycidyl ether (EGDE) was used as crosslinker.

Applicability of lattice-based thermodynamic models to various types of hydrogel swelling behaviors

2016 ◽  
Vol 427 ◽  
pp. 594-604 ◽  
Author(s):  
Chan Hee Lee ◽  
Young Don Yi ◽  
Hye Rin Park ◽  
Young Chan Bae
Keyword(s):  
Thermodynamic Models ◽  
Hydrogel Swelling ◽  
Swelling Behaviors

Swelling Behaviors of Acrylic-Based Superabsorbent Fibers

2012 ◽  
Vol 476-478 ◽  
pp. 1331-1335
Author(s):  
Qi Xia Liu ◽  
Zhi Rong Ding ◽  
Zhen Dong
Keyword(s):  
External Solution ◽  
Ion Concentration ◽  
Water Absorbency ◽  
Absorption Mechanism ◽  
Ph Values ◽  
Ionic Valence ◽  
Swelling Equilibrium ◽  
Saline Solutions ◽  
Osmotic Pressure Difference ◽  
Swelling Behaviors

The swelling behaviors of SAF in distilled water and various saline solutions were investigated and the absorption mechanism of SAF was discussed. Emphasises were laid on the effects of swelling time, saline solutions as well as the pH values of solutions on water absorbency of SAF. Results showed that water absorbency of SAF was significantly influenced by ion concentration and ionic valence of saline solutions as well as the pH values of solutions, but it was less affected by swelling time after reaching swelling equilibrium. The absorption mechanism of SAF is consistent with Flory’s theory of network and the osmotic pressure difference between SAF and the external solution is the motive force for swelling of SAF.

Isomorphous replacement in electron diffraction of wet crystals of rat hemoglobin

1983 ◽  
Vol 41 ◽  
pp. 446-447
Author(s):  
William F. Tivol ◽  
Murray Vernon King ◽  
D. F. Parsons
Keyword(s):  
Electron Diffraction ◽  
Heavy Atom ◽  
Isomorphous Substitution ◽  
X Ray Diffraction ◽  
Salt Solutions ◽  
X Ray ◽  
Isomorphous Replacement ◽  
Structure Factors ◽  
Diffraction Structure ◽  
The Mean

Feasibility of isomorphous substitution in electron diffraction is supported by a calculation of the mean alteration of the electron-diffraction structure factors for hemoglobin crystals caused by substituting two mercury atoms per molecule, following Green, Ingram & Perutz, but with allowance for the proportionality of f to Z3/4 for electron diffraction. This yields a mean net change in F of 12.5%, as contrasted with 22.8% for x-ray diffraction.Use of the hydration chamber in electron diffraction opens prospects for examining many proteins that yield only very thin crystals not suitable for x-ray diffraction. Examination in the wet state avoids treatments that could cause translocation of the heavy-atom labels or distortion of the crystal. Combined with low-fluence techniques, it enables study of the protein in a state as close to native as possible.We have undertaken a study of crystals of rat hemoglobin by electron diffraction in the wet state. Rat hemoglobin offers a certain advantage for hydration-chamber work over other hemoglobins in that it can be crystallized from distilled water instead of salt solutions.

Bulk standards for low-temperature biological x-ray microanalysis

1984 ◽  
Vol 42 ◽  
pp. 282-283
Author(s):  
P. Echlin ◽  
M. McKoon ◽  
E.S. Taylor ◽  
C.E. Thomas ◽  
K.L. Maloney ◽  
...  
Keyword(s):  
Phase Separation ◽  
Low Temperature ◽  
Analytical Method ◽  
Salt Solutions ◽  
Absolute Concentration ◽  
Cooling Process ◽  
X Ray ◽  
The Absolute ◽  
Analytical Procedures ◽  
Electrical Conductors

Although sections of frozen salt solutions have been used as standards for x-ray microanalysis, such solutions are less useful when analysed in the bulk form. They are poor thermal and electrical conductors and severe phase separation occurs during the cooling process. Following a suggestion by Whitecross et al we have made up a series of salt solutions containing a small amount of graphite to improve the sample conductivity. In addition, we have incorporated a polymer to ensure the formation of microcrystalline ice and a consequent homogenity of salt dispersion within the frozen matrix. The mixtures have been used to standardize the analytical procedures applied to frozen hydrated bulk specimens based on the peak/background analytical method and to measure the absolute concentration of elements in developing roots.

Relative apparent molal heat contents of some aqueous rare earth salt solutions at 25° C

1970 ◽  
Author(s):  
Michael Allen Mohs
Keyword(s):  
Rare Earth ◽  
Salt Solutions

Solution behavior of quenched or strongly charged polyampholytes in aqueous-salt solutions

2019 ◽  
Vol 94 (2) ◽  
pp. 35-44 ◽  
Author(s):  
G. Toleutay ◽  
◽  
A.V. Shakhvorostov ◽  
S.K. Kabdrakhmanova ◽  
S.E. Kudaibergenov ◽  
...  
Keyword(s):  
Salt Solutions ◽  
Solution Behavior ◽  
Aqueous Salt Solutions
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