Poly(L-lactide)/branched β-cyclodextrin blends: Thermal, morphological and mechanical properties

Area of Science:

• Polymer Science
• Materials Science
• Biomaterials Engineering

Background:

• Developing advanced biocompatible and biodegradable materials is crucial for pharmaceutical, biomedical, and food industries.
• Cyclodextrins offer unique properties for material development.
• Poly(L-lactide) (PLLA) is a widely used biodegradable polymer.

Purpose of the Study:

• To create new biocompatible and biodegradable materials by blending poly(L-lactide) (PLLA) with ionic branched β-cyclodextrin (bβCD).
• To investigate the miscibility and properties of PLLA/bβCD blends for potential industrial applications.

Main Methods:

• Synthesis of ionic branched β-cyclodextrin (bβCD) via polycondensation.
• Blending of bβCD with commercially available PLLA.
• Characterization using Fourier Transform Infrared Spectroscopy (FTIR), Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), Scanning Electron Microscopy (SEM), and Dynamic Mechanical Analysis (DMA).

Main Results:

• FTIR confirmed interactions between PLLA and bβCD.
• DSC and TGA revealed thermal properties of the blends.
• SEM analysis showed a single-phase structure across all blend compositions.
• DMA provided insights into miscibility and mechanical features.

Conclusions:

• PLLA/bβCD blends form a single-phase material, indicating good miscibility.
• These blends represent promising naturally available materials with tunable properties.
• The study opens new avenues for cyclodextrin-based materials in various high-value industries.