| 초록 |
Poly(lactic acid) (PLA) is one of the most popular bio-based polymers due to its reasonable physical and mechanical properties comparable to those of other synthetic plastics. However, low melt strength and susceptibility to hydrolytic degradation have resulted in the limitation for blow molding and foaming abilities. To overcome these shortcomings, diverse efforts have been reported for the incorporation of organic/inorganic fillers which improve the mechanical properties or raising the cellular densities through heterogeneous bubble nucleation by adding reinforcing fillers. In this research, we prepared PLA nanocomposites with cellulose nanofibers as reinforcing filler and their foams by pressure quenching of supercritical CO2. The effects of small additions of cellulose nanofibers on the thermal, rheological, and foaming behaviors of the PLA-based composites were investigated in terms of the cell morphology and foam density of the PLA |
