Ja. Trejooreilly et al., SURFACE-ENERGY AND WETTABILITY OF MODIFIED CELLULOSIC FIBERS FOR USE IN COMPOSITE-MATERIALS, The Journal of adhesion, 67(1-4), 1998, pp. 359-374
The surface modification of cellulosic substrates in the form of powde
rs and sheets was carried out using nonpolar oligomeric and polymeric
reagents bearing isocyanate and anhydride reactive moieties. The chara
cterization of these surfaces by inverse gas chromatography and by dyn
amic and equilibrium contact angle measurements, before and after the
treatments, revealed that the lower the polarity of the coupling agent
, the higher the loss of hydrophilic character of the substrate. In pa
rticular, the use of styrenic copolymers of rather high molecular weig
ht gave rise to essentially dispersive-modified surfaces which should
be highly suited for the preparation of composites based on nonpolar m
acromolecular matrices.