Nevertheless,
after drying, the upper layers of the sample cakes became CNF
sheetsfilled with the polymer particles and were compression-molded into CNF/PDLLA composites. The neat PDLLA
control sample is transparent, and the 8, 15, and 32 wt %
composites are opaque with an off-white color. Nanocellulose
(often more uniform bacterial cellulose) has been impregnated
with transparent resins to prepare transparent thinfilms.
8
Although the PDLLA-CNF sheets were prepared byfiltration,
the presence of microparticles did not allow the fibers to be