Physical Gel Formation
Physical Gel Formation - Related Videos
10:01
Thermal Scanning Conductometry (TSC) as a General Method for Studying and Controlling the Phase Behavior of Conductive Physical Gels
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Cited by 1 •
2018
The kinetics of the cooling process defines the properties of ionic gels based on low molecular weight gelators. This manuscript describes the usage of thermal scanning conductometry (TSC), which obtains full control over the gelation process, along with in situ measurements of the samples' temperature and conductivity.
06:30
Gel Purification
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2023
Gel purification is used to recover DNA fragments after electrophoretic separation. DNA recovery from an agarose gel includes three basic steps: binding, washing and eluting from a silica column. DNA is believed to bind to silica in the presence of high salt via a salt bridge. Following binding, DNA is washed of impurities and eluted under low salt conditions disrupting this interaction. This video goes through a step-by-step, generalized procedure for cutting out a band from the gel, gel...
08:25
Using a Fluorescent PCR-capillary Gel Electrophoresis Technique to Genotype CRISPR/Cas9-mediated Knockout Mutants in a High-throughput Format
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Cited by 6 •
2017
The genotyping technique described here, which couples fluorescent polymerase chain reaction (PCR) to capillary gel electrophoresis, allows for high-throughput genotyping of nuclease-mediated knockout clones. It circumvents limitations faced by other genotyping techniques and is more cost effective than sequencing methods.
05:21
General Approach to the Physical Exam
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2023
Source: Jaideep S. Talwalkar, MD, Internal Medicine and Pediatrics, Yale School of Medicine, New Haven, CT The examination of the body is fundamental to the practice of medicine. Since the Roman Empire, physicians have described the connection between alterations in function of specific parts of the body and specific disease states and have sought to further scientific understanding to improve bedside diagnosis. However, in this modern age of increasing technology within medical diagnostics, it...
02:16
Solution Formation
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2020
There is no one solvent that can dissolve every type of solute. Some substances that readily dissolve in a certain solvent might be insoluble in a different solvent. A simple way to predict which substances dissolve in which solvent is the phrase "like dissolves like". This means that polar substances, such as salt and sugar, dissolve in a polar substance like water. In contrast, non-polar substances are more soluble in non-polar solvents such as carbon tetrachloride. This selective solubility...
FAQs
These variables influence how strongly and how extensively the molecular or particulate building blocks associate. Changing concentration can alter network connectivity, while temperature, pH, and ionic strength affect the noncovalent interactions that hold the structure together. As a result, these conditions help determine whether a stable gel forms and how effectively it immobilizes liquid or interacts with dissolved substances.
Reversible associations allow the three-dimensional network to reorganize when environmental conditions change. This responsiveness can support processing, regeneration, and adaptation rather than locking the material into one permanent structure. For environmental technologies, reversibility is especially relevant when a gel must be handled, reused, or adjusted to changing conditions during contaminant removal or dissolved-substance control.
Physical gel formation relies on noncovalent associations, so its network can change or separate when conditions shift. Permanent chemical crosslinks instead create lasting connections within the material. This distinction affects how a gel responds to temperature, pH, ionic strength, and processing conditions, making physically formed networks particularly relevant when reversibility or responsive behavior is desirable.
The resulting network can act as an absorbent material that captures contaminants from water or as a filtration medium that helps separate dissolved substances. Its three-dimensional structure provides the functional framework for interacting with and retaining material from the liquid. Because the associations are reversible, the gel may also support processing or regeneration within an environmental treatment strategy.
Development should account for concentration, temperature, pH, and ionic strength because each can influence network formation and final behavior. Researchers can evaluate how these conditions affect structural stability, liquid immobilization, and interaction with dissolved substances. Matching the gel’s response to the intended water-treatment setting is important for designing absorbent, filtration, or transport-control applications.
This approach is useful when treatment materials must interact with water while retaining a solid-like network and when their behavior may need to adapt to changing conditions. Applications include contaminant removal, filtration, and control of dissolved-substance transport. The combination of reversible structure and environmental function also connects physical gels with sustainable materials, wastewater treatment, and regeneration-oriented processing.