Advanced reference materials for the characterization of molecular size and weight
Source abstract
Abstract
Abstract Nano-sized advanced reference materials (RMs) based on synthetic polymers were developed using supercritical fluid chromatography (SFC) and certain size measurement methods. These RMs have reference values of accurate molecular size and molecular weight. One of the RMs investigated was poly(ethylene glycol) (PEG) with no distribution in its degree of polymerization, i.e., its absolute degree of polymerization was determined as 23. SFC was used to separate molecularly uniform polymers from a commercial sample with wide polydispersity in its degree of polymerization. Because of the polydispersity, the average molecular size of the commercial polymer sample showed a distribution. This PEG 23mer RM can provide a uniform molecular size as the degree of polymerization is determined to be precisely 23.
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Research context
OpenAlex topics: Analytical Chemistry and Chromatography · Phase Equilibria and Thermodynamics · Chemical Thermodynamics and Molecular Structure
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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