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Fibre-laden liquid foams are used in the production process of novel non-woven fibrous materials, employed for example for thermal or acoustic insulation. Here we present an experimental investigation of the stability of such foams. We find that on a time-scale of a few minutes the presence of fibres does not alter the drainage properties of the foam. On a longer time-scale fibres slow down drainage,...
Processing recycled cellulosic fiber suspension in papermaking has been a main industry concern. Chitosan as a natural biopolymer has been considered recently. The presence of amine groups gives this material an opportunity to gain cationic charge especially in the acidic conditions. Also, its straight polymeric chain consisting of (1–4) linked 2-amino-2-deoxy-β-d-glucan monomer is a unique property...
The objectives of this work were to investigate the effect of the degree of fibrillation and addition method of cellulose nanofibrils (CNFs) into the wet end of the papermaking process on the drainage, filler retention, strength and optical properties of handsheets. CNFs were produced with the grinding method, and the degree of fibrillation was manipulated by varying the passing number through the...
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