Abstract
Rosin-alum internal-sized handsheets were analyzed by electron spectroscopy for chemical analysis (ESCA) and time of flight secondary ion mass spectrometry (TOF-SIMS) to reveal the distribution of rosin sizes and aluminum components in the handsheets. Results obtained from ESCA showed that distribution of rosin-sizing agents in handsheets became more even as pulps were beaten to higher degree. TOF-SIMS images of cross sections of the handsheets showed that rosin-sizing agents and aluminum components existed both on pulp-fiber surfaces and inside the pulp-fiber wall. Furthermore, these images showed that rosin sizes were distributed more evenly in handsheets and inside pulp-fiber walls with increasing beating degrees. These observations were confirmed by ESCA results. The distribution of rosin-sizing agents in handsheets and inside pulp-fiber walls was found to become more homogeneous by increased beating degrees.
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