Modifiye kalsitin dolgu tutunumu ve fluting kağıtların mekanik özellikleri üzerine etkileri

A study on effects of modified calcite on filler retention and mechanical properties of fluting papers

In this study, the use of modified calcite as a filler in fluting paper production was investigated and its effects on retention and some mechanical properties of the papers were determined. Ground calcium carbonate (GCC/calcite) and cationic starch were used for modification. Filler modification with alum effect of CPAM resulted in starch-calcite encapsulation. Produced modified calcite (MC) was used in fluting paper production at certain dosages as filler. Simultaneously, paper was made with unmodified calcite (UC), and the effects of modified calcite on the paper properties and filler retention were studied. The results of this study indicated that the use of 10% MC improved filler retention and provided approximately 23% more retention than the use of 10% UC. In addition, mechanical properties and air permeability values of MC-filled papers were higher than those of UC-filled papers. With the use of MC in fluting papers production, better filler retention was achieved, while the reduction in mechanical properties caused by the addition of filler can be minimized. Besides, impurities in white water can be minimized by reducing the filler dosage given during paper production

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