Table 5.

Comparison of the polymer composite properties.

Analysis	Solvent-Involving Cellulose Modification (S)	Non-Solvent Cellulose Modification (NS)
FT-IR	chemical structure of a composite unaffected; possible filler-polymer matrix interaction changes	chemical structure of a composite unaffected; possible changes in filler-polymer matrix interactions
static mechanical tests	material of a performance slightly higher than untreated cellulose-filled polymer composite	material becomes stiffer; the highest improvement in mechanical properties
DSC	effect similar to the neat UFC100 incorporation	elastic ethylene segment Tg slight increase
surface free energy	slight increase of surface free energy polar part	higher changes in polar part of surface free energy; easier wetting