Design and characterization of novel β-cyclodextrin based copolymer materials

Area of Science:

• Polymer Chemistry
• Materials Science
• Supramolecular Chemistry

Background:

• Polyurethanes (PUs) are versatile polymers with tunable properties.
• Macrocyclic compounds like beta-cyclodextrin (β-CD) can be incorporated into polymer structures to impart unique functionalities.
• Developing novel copolymers with enhanced properties for specific applications is an ongoing area of research.

Purpose of the Study:

• To systematically design and characterize novel polyurethane copolymers containing beta-cyclodextrin (β-CD).
• To investigate the influence of different diisocyanate linkers and synthetic conditions on copolymer properties.
• To evaluate the suitability of these β-CD/PU copolymers for sorption-based applications.

Main Methods:

• Synthesis of β-CD/PU copolymers using various diisocyanates (HDI, CDI, MDI, PDI, NDI).
• Characterization techniques including DRIFTS, solid-state and solution NMR, TGA, and elemental analysis (CHN).
• Assessment of copolymer solubility and determination of optimal ratios for sorption applications.

Main Results:

• Novel β-CD/PU copolymers were successfully synthesized and characterized.
• Copolymers exhibited insolubility in water, suggesting stability for certain applications.
• Optimal β-CD/linker mole ratios for sorption applications were identified as 1:1 to 1:3.
• Crosslink density was found to be limited by the steric bulk of the crosslinker.

Conclusions:

• The study successfully demonstrated the synthesis of novel β-CD/PU copolymers.
• These copolymers possess properties suitable for sorption-based applications.
• The synthetic conditions and choice of diisocyanate linker significantly influence the final material properties.