All-Biomass Derived Nanocomposite Films

Achieving simultaneous sustainability and property is a great challenge for current thermally managed composite films. The study proposes to prepare all-biomass derived nanocomposite films with excellent mechanical, thermal, and degradation properties by self-assembling carbon quantum dots (CQDs) and carbon nanosheets (CNSs) from cellulose nanofibers (CNFs). The results showed that the nanocomposite film with CQDs₁@CNSs₁/CF exhibited the best comprehensive properties with thermal conductivity of 0.817 W m^-1 K^-1, tensile strength of 39.60 MPa, elongation at break of 6.26%, tensile modulus of 5.34 GPa, degradation residual rate in water of 86.02%, degradation residual rate in PBS of 66.67%, and degradation residual rate in buried of 52%. The all-biomass derived nanocomposite films regarding the excellent thermal conductivity, biodegradability, and mechanical properties can be available with thermal management and excellent sustainability.