Wound dressing materials from waste bioplastics

Overview

This solution transforms waste bioplastic films, specifically PHA (polyhydroxyalkanoate) and PLA (polylactic acid), into nanofiber-based wound dressing materials through a novel thermoplastic electrospinning technique. By addressing the challenge of bioplastic film collection and recycling, the technology converts low-value waste streams into high-value medical products. The resulting nanofiber films are suitable for wound care applications and undergo sterilization to meet medical use requirements. This approach offers a sustainable pathway for the circular economy of bioplastics while creating advanced healthcare materials.

Technical specifications

Key features:

• Novel thermoplastic (melt) electrospinning technique developed in-house that combines molten PHA polymer with an applied electrical field to produce nanofibers
• Waste bioplastic films are crushed into smaller particles and cleaned to remove dirt and contaminants before processing
• Nanofibers self-assemble over time to form a new continuous film suitable for medical applications
• Final product is sterilized for medical use
• Characterization includes GPC (molecular weight), TGA (thermal stability), DSC (thermal transitions), DMA (mechanical properties), and rheometry (processability)
• Nanofiber evaluation through SEM (morphology), tensile testing (strength), and indentation (mechanical response)
• Biocompatibility testing to ensure safety for health applications

Research background:

The team has extensive expertise in PHA recycling and PLA processing, with publications cited more than 200 times, and electrospinning research cited more than 100 times.

Technology readiness level

The technology is currently at an early-to-mid development stage (TRL 3-4). The thermoplastic electrospinning method has been developed in-house, and the team has strong foundational expertise in both bioplastic processing and electrospinning. The next validation steps include collecting PHA polymers, developing a cleaning process, characterizing polymers for thermomechanical properties, optimizing melt electrospinning parameters, characterizing the resulting nanofibers, and conducting biocompatibility measurements. If successful, subsequent stages will involve in vivo testing and eventual commercialization with the medical industry.