P. Lennon et al., Comparison of the wetting behaviour of polyamides presented as particles and films - Influence of a plasma microwave treatment, J MATER SCI, 35(1), 2000, pp. 49-55
The wettability of two types of polyamide powder (ORGASOL(R) and RILSAN), d
iffering by their shape and chain ends, has been studied by three methods:
inverse gas chromatography, capillary ascension and contact angle measureme
nt on films obtained by the compression at room temperature of the powders.
The results are compared with the contact angles measured on the films rea
lized with the melted powders. All the techniques give the same classificat
ion of the wettability of the two kinds of polyamides but not the same abso
lute values of contact angles. In particular, the influence of the shape of
the particles has been shown on ORGASOL(R) by capillary ascension and by c
ontact angle performed on films obtained by compression at room temperature
of the powder. A N-2/O-2 plasma treatment applied to the particles leads t
o an increase of the water wettability of the powders but the treatment was
found less efficient than on the melt powder based films. (C) 2000 Kluwer
Academic Publishers.