All-Biomass Derived Nanocomposite Films.

Area of Science:

• Materials Science
• Polymer Science
• Nanotechnology

Background:

• Current composite films face challenges in balancing sustainability with performance for thermal management.
• Developing eco-friendly materials with superior thermal, mechanical, and degradation properties is crucial.

Purpose of the Study:

• To prepare all-biomass derived nanocomposite films with enhanced properties.
• To investigate the self-assembly of carbon quantum dots (CQDs) and carbon nanosheets (CNSs) from cellulose nanofibers (CNFs).

Main Methods:

• Utilizing cellulose nanofibers (CNFs) as a base material.
• Employing self-assembly techniques to integrate carbon quantum dots (CQDs) and carbon nanosheets (CNSs).
• Characterizing the thermal conductivity, mechanical properties, and degradation behavior of the resulting nanocomposite films.

Main Results:

• The CQDs1@CNSs1/CF nanocomposite film demonstrated superior comprehensive properties.
• Achieved a thermal conductivity of 0.817 W m⁻¹ K⁻¹.
• Exhibited a tensile strength of 39.60 MPa, elongation at break of 6.26%, and tensile modulus of 5.34 GPa.
• Showcased significant biodegradability with residual rates of 86.02% in water, 66.67% in PBS, and 52% when buried.

Conclusions:

• All-biomass derived nanocomposite films possess excellent thermal conductivity, biodegradability, and mechanical properties.
• These materials are suitable for thermal management applications while ensuring sustainability.
• The study highlights a viable pathway for creating high-performance, eco-friendly composite films.