Non-cellulosic elimination and the effect of surface modifications were analyzed with
infrared analysis, showing characteristic intensities for cellulosic species and new peaks for each modification
(characteristic ester peak ∼1740cm−1, and amino peak ∼1550cm−1) cellulose nanofibers and
nanocrystals were observed with atom-force microscopy; crystallinity of nano-scale cellulose before
and after modifications was obtained with X-ray diffraction to analyze the performance of the modifications.
Composites were tested with stress–strain standard methods showing better mechanical properties
when surface modifications were performed and the amount of filler was 0.5 wt% reaching an increase
in strain to fracture of more than 20%.