Visualizing the Inner Architecture of Poly(ϵ-caprolactone)-Based Biomaterials and Its Impact on Performance...

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Enzymology

Background:

• Poly(ϵ-caprolactone) (PCL) biomaterial performance depends on amorphous and crystalline domain distribution.
• Visualizing these internal PCL structures is difficult.

Purpose of the Study:

• To develop a method for visualizing the spatial distribution of amorphous and crystalline domains in PCL-based biomaterials.
• To investigate the selective degradation capabilities of Candida antarctica lipase B (CALB) on PCL.

Main Methods:

• Utilizing Candida antarctica lipase B (CALB) enzyme at low concentrations for selective degradation.
• Applying a top-down enzymatic dissection approach on various PCL-based systems.
• Analyzing the resulting nanostructured crystalline skeletons and captured nanolamellae.

Main Results:

• CALB enzyme demonstrates superior degradation selectivity, preferentially breaking down amorphous PCL chains.
• The method successfully captured self-assembled nanolamellae and hierarchically nanostructured crystalline skeletons.
• Precise mapping of amorphous PCL compartment distribution was achieved.

Conclusions:

• Enzymatic degradation using CALB offers a novel approach to visualize PCL internal architecture.
• This technique enables precise mapping of amorphous domains, overcoming previous visualization challenges.
• The findings are crucial for understanding and designing advanced PCL-based biomaterials.