CNC/PPI Active Composite Film

Flexible · Antioxidant · Antibacterial · Fast Degrading

Integration of cellulose nanocrystals and peanut protein isolate via Pickering emulsions yields active films with internal plasticizing droplets that enhance flexibility.

Xinxin, Yan · Guo, Lukuan · Ziwen, Li · Wenhui, Cheng · Yufei, Nan · Zhu, Wenyuan · Song, Junlong · Guo, Jiaqi

Food Hydrocolloids 2026

Specifications

Elongation at break increase

{'zh': '76.86', 'en': '76.86'} %

Water vapor permeability reduction

{'zh': '25.94', 'en': '25.94'} %

Soil burial degradation time

{'zh': '16', 'en': '16'} days

Optimal CNC/PPI ratio for emulsion stabilization

{'zh': '7:3', 'en': '7:3'}

Advantages

Elongation at break increased by 76.86%

Embedded emulsion droplets act as internal plasticizing domains that enhance film flexibility.

Water vapor permeability reduced by 25.94%

The composite structure creates a more tortuous path for water vapor, reducing permeability.

Near-complete soil degradation in 16 days

Fully biomass-derived components enable rapid soil degradation, reducing environmental burden.

Antioxidant and antibacterial activity

Eugenol-loaded emulsion droplets impart both antioxidant and antibacterial functions.

Applications

• Biodegradable food packaging：Replaces non-biodegradable plastic packaging and degrades rapidly in soil.
• Bio-based active packaging：Serves as antioxidant and antibacterial carrier to extend shelf life.
• Protein films：Improves flexibility and moisture resistance of peanut protein films.