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1 Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

1 2012

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Degradation of paper products from waste pulp type C with the addition of different colour pigments under the influence of UV radiation

Modzelewska I., Patelski E., Jaszczur A.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2012

No. 79

42--46

Degradation of paper products from waste pulp type C with the addition of different colour pigments under the influence of UV radiation. In this paper the ageing process of paper products made of waste pulp type C was examined with different content of fillers and colourful pigments under the influence of the UV radiation. For this purpose, examinations sheets of paper were produced with addition of 3, 5 and 10% of titanic white and synthetic ferric pigments (combination of Fe2O3 and FeO (OH)) Bayferrox 610 and 960, as well as with the addition of resin adhesive of 2, 3 and 5% concentration, based on dry pulp. For comparison results were also carried out control sheets without any additions. Samples of paper were examined taking into account color change and breaking length after artificial ageing process of the light. Studies have shown that with the increase in the share of paper pigments the colour changes are much less noticeable. It has also indicated that the decrease of paper strength with the addition of titanium white and resin adhesive was very sharp only in the initial stages of ageing.