Polymer Sample Preparation
Polymer Sample Preparation - Related Videos
13:57
Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
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Cited by 4 •
2014
The methodology to perform friction force microscopy experiments for contacting brushes is presented: Two polymer brushes that are grafted from (a) substrates and (b) colloidal probes are slid to show that, by using two contacting immiscible brush systems, friction in sliding contacts is reduced compared to miscible brush systems.
10:27
Preparation of Highly Porous Coordination Polymer Coatings on Macroporous Polymer Monoliths for Enhanced Enrichment of Phosphopeptides
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Cited by 12 •
2015
A procedure for the preparation of porous hybrid separation media composed of a macroporous polymer monolith internally coated by a high surface area microporous coordination polymer is presented.
08:21
Sample Preparation in Quartz Crystal Microbalance Measurements of Protein Adsorption and Polymer Mechanics
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Cited by 12 •
2020
The quartz crystal microbalance can provide accurate mass and viscoelastic properties for films in the micron or submicron range, which is relevant for investigations in biomedical and environmental sensing, coatings, and polymer science. The sample thickness influences which information can be obtained from the material in contact with the sensor.
03:01
Sample Preparation for Metabolomics: A Method to Prepare Cell Samples for Metabolite Profiling
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2023
This video describes a technique of preparing breast cancer cell samples for metabolite profiling. Breast cancer cells are treated with estradiol, which binds to the estrogen receptor alpha and causes change in the metabolite...
02:34
Polymers
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2020
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
FAQs
The most important principle is representativeness: a specimen should retain the polymer’s relevant structure and processing history rather than introduce changes during preparation. Material selection, specimen geometry, and the choice between cutting, machining, molding, or sectioning can all affect what the test measures. Controlling these choices makes results more comparable across samples and processing conditions.
Conditioning establishes a consistent environmental history for each specimen before measurement. Controlling temperature and humidity reduces variation associated with differences in storage or handling, helping researchers attribute observed results to the polymer or its processing rather than inconsistent preparation. Applying the same conditioning approach is particularly useful when comparing formulations or manufacturing conditions.
Cleaning and polishing can reduce surface defects that might interfere with measurements or create artifacts during analysis. These steps are therefore useful when surface quality influences the reliability of characterization, including microscopic examination and other measurements affected by specimen condition. Applying them consistently helps distinguish material-related features from irregularities introduced during preparation.
Representation depends on selecting material from an appropriate source and converting it into defined, consistent specimen geometries. Cutting or machining may create test pieces from existing material, while molding or sectioning may provide other forms for examination. The selected route should preserve relevant structure and processing history so comparisons reflect meaningful material differences.
Preparation should reflect the property being examined and the form required for reliable measurement. Mechanical, thermal, chemical, and microscopic characterization may require different specimen geometries, sectioning approaches, or surface conditions. Choosing and conditioning specimens consistently supports dependable measurements while reducing artifacts, allowing the resulting data to connect polymer structure with performance.
It is especially important when researchers compare polymer formulations, manufacturing conditions, or batches and need confidence that differences are not caused by inconsistent specimens. In quality control, standardized preparation supports reproducible testing. In engineering research, it helps relate material structure and processing history to measured mechanical, thermal, chemical, or microscopic properties.