Journal
APPLIED SURFACE SCIENCE
Volume 289, Issue -, Pages 155-159Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2013.10.125
Keywords
TOF-SIMS; SEM; PDADMAC; Adsorption; Distribution; Visualization
Categories
Funding
- Ministry of Edition, Culture, Sports, Science and Technology (MEXT) of Japan [21228004, 25252032]
- Grants-in-Aid for Scientific Research [25114508, 25252032, 21228004] Funding Source: KAKEN
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In this study, the adsorption behavior of poly(dimethyl-diallylammonium chloride) (PDADMAC), a retention agent used in papermaking, in a dual polymer system with anionic poly(acrylamide) (A-PAM) was investigated by time-of-flight secondary ion mass spectrometry (TOF-SIMS). Initially, fragment structures and cleavage patterns were identified via TOF-SIMS experiments with deuterium-labeled PDADMAC and the unlabeled analogue. Visualization of PDADMAC on a dry handsheet surface using traditional TOF-SIMS analysis indicated that the electrostatic interaction between coagulated PDADMAC and A-PAM was relatively weak. A novel cryo-TOF-SIMS/SEM system enabled the evaluation of a wet handsheet containing PDADMAC. Analysis of this sample indicated that PDADMAC adsorbs onto the fiber surface and collects preferentially on the tangled fibrils located between fibers. (C) 2013 Elsevier B.V. All rights reserved.
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