Novel Self-Directing Single-Polymer Jet Developing Layered-Like 3D Buckled Microfibrous Scaffolds for Tissue...

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Materials Science

Background:

• Electrospinning is key for fabricating tissue engineering scaffolds.
• Challenges include poor control over scaffold morphology due to polymer jet instabilities.
• Existing methods struggle with porosity and mechanical stability control.

Purpose of the Study:

• To develop a novel self-directing single-jet electrospinning technique.
• To overcome limitations of conventional methods in scaffold fabrication.
• To create uniform, layered fibrous scaffolds with controlled properties.

Main Methods:

• Utilized a self-directing single jet electrospinning process.
• Observed jet dynamics using high-speed cameras.
• Analyzed scaffold morphology, porosity, and mechanical properties.
• Conducted in vitro cell culture studies.

Main Results:

• Generated multilayered microfibrous scaffolds (MFSs) with gradient porosity and mechanical strength.
• Demonstrated improved cell proliferation (21% at day 6, 38% at day 9) compared to conventional nanofibrous scaffolds (NFSs).
• Achieved uniform, circular scaffolds without external parameter tuning.

Conclusions:

• The novel self-switching dual-jet electrospinning method offers precise control over scaffold architecture.
• MFSs exhibit enhanced cell permeability and proliferation, suitable for tissue engineering.
• This reproducible, single-step process is highly tunable for advanced biomaterial development.