Chemical stability of prints made on hemp fibre based papers

Abstract

For paper industry and consequently graphic industry it is very important that fibres used in paper production
provide high quality and printability of the paper. In pulp and paper industry fibres of cellulose pulp derived
still predominantly from wood, but in the last few years the consumption of non-wood raw materials for that
purpose has grown. This work presents research on the chemical stability of printed hemp fibre based papers
to water, alcohol and alkali. Evaluation of chemical degradation on prints was determined through the spectrophotometric
measurements. Deviations in colour of prints have shown that highest chemical stability provides
prints made on industrially paper formed from mixture of hemp and post-consumer fibres with high share of
inorganic components. Further, bleached hemp fibres in handmade 100 % hemp fibre based paper give prints
with the lowest chemical stability.