The Effects of Cationic Polymer Addition on Size Retention and Paper Sizing Performance in Rosin Emulsion Sizing
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Accession number;06A0068248
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| Title;The Effects of Cationic Polymer Addition on Size Retention and Paper Sizing Performance in Rosin Emulsion Sizing |
| Author;
OKUSA YUKO
(Kurita Water Ind., Ltd., JPN)
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Journal Title;Japan TAPPI Journal
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Journal Code:G0115A
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ISSN:0022-815X
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VOL.60;NO.2;PAGE.(JA)245-252,(EN)252-255,246-251(2006)
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| Figure&Table&Reference;FIG.12, TBL.3, REF.5 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Various cationic polyacrylamides (C-PAM) were added to pulp slurries for fixing rosin emulsion size, and the polymer properties influencing size retention ratio and paper sizing performance were studied. C-PAM with a high cationic density improved the retention ratio of rosin size, although paper sizing performance was low compared with C-PAM having a low charge density. These results show that sizing performance is influenced by not only rosin size content in handsheets but also the properties of C-PAM co-added to pulp slurries. When calcium carbonate filler and C-PAM with a high charge density were used, rosin emulsion size tended to adsorb on not only pulp fibers but also the filler. Both size retention and paper sizing performance were improved, when C-PAM was added after the rosin emulsion size addition to pulp slurries rather than the inverse addition sequence. Furthermore, the longer the duration time between rosin emulsion size and C-PAM additions was, the lower the size retention as well as the sizing degree of the rosin-sized paper were. These results suggest that C-PAM should be applied to pulp slurries after the addition of rosin emulsion size for achieving more efficient paper sizing performance. (author abst.) |
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