Js. Brinen et Rj. Kulick, SIMS IMAGING OF PAPER SURFACES .4. THE DETECTION OF DESIZING AGENTS ON HARD-TO-SIZE PAPER SURFACES, International journal of mass spectrometry and ion processes, 143, 1995, pp. 177-190
Citations number
11
Categorie Soggetti
Spectroscopy,"Physics, Atomic, Molecular & Chemical
Hard-to-size bleached sulfite paper was examined by electron spectrosc
opy for chemical analysis, time-of-flight secondary ion mass spectrome
try (TOF-SIMS) and ink penetration methodology. SIMS spectra indicated
the presence of high mass fragment ions on the surface of the paper s
amples and SIMS images showed that these high mass peaks were present
as aggregates as well as being dispersed on the paper surface. For the
amount of internal size applied, relatively low sizing was measured.
When the paper was exposed to acetone in a paper chromatography experi
ment, three areas having different sizing were obtained: the region ex
posed to acetone (improved sizing), the solvent front region (very poo
r sizing) and the one unexposed to acetone (same sizing as the origina
l paper). The SIMS spectrum from the region of improved sizing showed
a decrease in the intensity of the aforementioned high mass peaks and
disappearance of the aggregates. Similarly, the SIMS spectrum of the s
olvent front showed a build-up in intensity of high mass fragments wit
h disappearance of the clumps, while the spectrum from the region of t
he paper unexposed to acetone was the same as that from the original p
aper. Several of the high mass fragments which are linked to sizing lo
ss are tentatively identified based on their molecular weights.