Related Experiment Video
Updated: Sep 27, 2026

Controlled Synthesis and Fluorescence Tracking of Highly Uniform Poly(N-isopropylacrylamide) Microgels
Published on: September 8, 2016
[Study of the crystalline behaviors of polymer by inverse gas chromatography]
Abstract:
An investigation was made on crystallinity(Xc) and melting temperature(Tm) of the crystalline polymer polyethylene glycol(PEG) by inverse gas chromatography(IGC). The influence of the property of the probe and the coating weight of PEG in stationary phase on the data determined is discussed. And IGC data are compared with those got by differential scanning calorimetric (DSC) experiment. Results showed that IGC is a very useful technique for measuring the melting point and the degree of crystallinity of polymer samples since it does not depend on the assumptions about the properties of 100% crystalline polymer. IGC data indicated that the melting temperature of PEG was 67 degrees C and crystallinity was 89.7%. DSC data indicated the same results. The experimental data was found to be not related with the chemical nature of the probes, but depended on the coating weight of PEG on the supports.
More Related Videos
Related Concept Videos
Gas Chromatography: Introduction
In GC, a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a column.
Polymer Classification: Crystallinity
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
Gas Chromatography: Types of Columns and Stationary Phases
For an analyte to remain on the column for a sufficient amount of time, it must exhibit some level of compatibility (or...
Silica Gel Column Chromatography: Overview
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
Gas Chromatography–Mass Spectrometry (GC–MS)
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall. The coating...
Determination of Molar Masses of Polymers II

