Recent developments in the detailed characterization of polymers by multidimensional chromatography

Area of Science:

• Polymer Science and Engineering
• Analytical Chemistry
• Chromatographic Techniques

Background:

• Synthetic polymers and biopolymers exhibit complex structures with variations in functionality, chain length, and architecture.
• Comprehensive characterization necessitates the integration of multiple chromatographic methods to resolve these complexities.

Purpose of the Study:

• To review recent advancements in two-dimensional chromatography for analyzing synthetic polymers and biopolymers since 2005.
• To highlight the utility of combining different chromatographic techniques for detailed polymer structural elucidation.

Main Methods:

• Two-dimensional chromatography, specifically combining high-performance liquid chromatography at critical conditions (LCCC) with size-exclusion chromatography.
• Hyphenation of LCCC with mass spectrometry techniques, such as MALDI-TOF and ESI-TOF, for enhanced molecular detail.
• Separation based on diverse polymer properties including molar mass, chemical composition, and functionality.

Main Results:

• Demonstration of two-dimensional chromatography's capability to separate polymers based on multiple properties simultaneously.
• Mass spectrometry hyphenation provides deeper insights into the molecular characteristics of polymeric structures.
• Recent developments have expanded the application scope and resolution of these advanced chromatographic methods.

Conclusions:

• Combining chromatographic techniques, particularly LCCC with SEC, offers a powerful approach for comprehensive polymer characterization.
• Hyphenation with mass spectrometry further enriches the analytical information obtainable for complex polymers.
• These advanced methods are crucial for understanding the intricate structures of both synthetic and biopolymers.