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The characteristic fragment ions and visualization of cationic starches on pulp fiber using ToF‐SIMS
Author(s) -
Matsushita Yasuyuki,
Sekiguchi Takuya,
Saito Kaori,
Kato Toshiyuki,
Imai Takanori,
Fukushima Kazuhiko
Publication year - 2007
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.2550
Subject(s) - cationic polymerization , starch , chemistry , scanning electron microscope , ion , fragmentation (computing) , pulp (tooth) , adsorption , ammonium , derivative (finance) , nuclear chemistry , analytical chemistry (journal) , polymer chemistry , chromatography , materials science , organic chemistry , composite material , medicine , pathology , computer science , financial economics , economics , operating system
Time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) was used to investigate the distribution of cationic starch on pulp fiber. To identify the characteristic fragment ions of the cationic starches, deuterium‐labeled cationic starches were prepared and analyzed using ToF‐SIMS. The starch 2‐hydroxypropyltrimethylammonium chloride derivative generated characteristic fragments at m / z 58 and 59, which were identified as [H 2 CN(CH 3 ) 2 ] + and [N(CH 3 ) 3 ] +· , respectively. The fragmentation patterns were also suggested. From the imaging analysis, the adsorption of the cationic starch on fibers was uneven on individual fibers, as well as between fibers. This may have been on account of fiber morphology and structure. On examining scanning electron microscope (SEM) images, the quaternary ammonium starch derivative (QS) did not penetrate the fiber. No migration of cationic starch was observed under various drying conditions. Copyright © 2007 John Wiley & Sons, Ltd.